Pratique du Shadowing: Engineers Tore Down a BYD — What They Found Should Terrify Britain's Carmakers - Apprendre l'anglais à l'oral avec la vidéo
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In 2023, Japan's largest publishing house bought a Chinese car, rolled it into a workshop and took the whole thing apart, down to the last bolt.
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Every part photographed, weighed and measured.
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Then it printed what it found in a 350 -page book, priced at around $6 ,400 a copy,
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and sold it to the people who could afford it, the engineers at Toyota, Honda and Nissan.
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Not because the car was bad
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because the people who invented modern car manufacturing could not fully explain how it had been built
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so cheaply and they needed to
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that car was a BYD seal it is sitting in showrooms from Croydon to Glasgow right now from a brand
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that sold more than 51 ,000 cars in Britain last year
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more than Tesla in a country where most people could not
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have told you what the letters stood for three years ago
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it may well be on your street already whether you have noticed or not.
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So what did the Japanese find when they opened one up?
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And the question almost nobody in Britain is asking, is this car cheap to make or cheap to own?
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Because those are two very different promises and only one of them shows up in a teardown.
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Everything in this video comes from published sources.
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The teardown findings come from Nikkei, the Japanese publisher whose engineers physically took a BYD seal apart and printed what they found.
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The cost analysis comes from UBS, the Swiss investment bank,
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which ran its own independent teardown of the same car to work out what it really costs to build.
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More engineering analysis comes from Caresoft Global, an American consultancy that has taken apart BYD's cheapest car for clients in Japan and America.
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British prices and warranties come from BYD's own published figures.
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Crash data comes from Euro NCAP and insurance and owner data from British sources.
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Where something crosses from fact into my interpretation, I will tell you.
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Start with who spent the money, because that tells you how seriously to take everything else.
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Nikkei is the same group behind
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Japan's biggest financial newspaper.
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It is not a car magazine.
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It is what the Japanese business establishment reads over breakfast
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and it decided that a Chinese saloon was worth a complete engineering teardown.
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That decision alone tells you where the Japanese car industry thought the threat was coming from.
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The body, the battery pack, the drive unit, the wiring, the interior, every piece photographed and measured as it came off and explained,
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with repair guidance, in that 350 -page manual.
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And the preface did not hedge.
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It described BYD as the Chinese manufacturer that will lead the world of electric vehicles in the future.
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That is not a Chinese marketing department talking.
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That is Japan's most respected business publisher writing about a rival.
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The first thing that struck the engineers was how few parts were inside the car.
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That sounds like a small thing.
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It is not.
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Every part in a car is something to design, something to buy, something to ship,
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something to fit on the production line and eventually something that can fail on you.
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Cut the number of parts and you cut the cost at every one of those steps at once.
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It compounds.
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And what they found was that BYD was not trimming here and there.
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It was systematically combining components that almost every other carmaker still buys separately.
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On BYD's compact SUV, the Atto 3, the kind you see on the school run in Leeds or Bristol,
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engineers found eight major components folded into one integrated drive unit.
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The motor, the gearbox, the power electronics and more.
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Pieces that used to arrive as separate boxes from separate suppliers combined into one.
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Less weight, simpler assembly, fewer joints to fail on the line.
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And it did not stop at combining parts.
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BYD took those combined parts and shared them across several models so one design serves three or four cars instead of one.
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To a factory accountant, that is close to everything.
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You order in bigger volumes, you approve one supplier once, you stock one part number.
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Multiply that across a whole car and the savings stack up line by line.
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No single dramatic breakthrough, just a thousand small disciplined decisions.
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And it was not one publisher chasing a headline.
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In October 2024, the Japanese government's
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Regional Trade Bureau for Central Japan hosted something that would have been unthinkable a decade earlier.
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In an old gymnasium in Gifu, just outside Nagoya, in the heart of Japan's car country,
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it laid out more than 90 ,000 parts stripped from 16 foreign electric cars.
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BYD, NIO, Tesla all pulled apart and set out on long tables like specimens in a museum.
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around 70 japanese parts makers the companies behind the parts in your corolla
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and your yaris sent their people to walk the aisles one
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of them the head of a department at a japanese parts maker summed up the mood in a sentence
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he was surprised he said at how few parts byd and tesla used
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think about
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that room these are the people who spent the 1980s teaching the rest of the world how to build a reliable car.
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And there they were, leaning over folding tables, taking notes on a Chinese SUV.
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The unsettling part was not that BYD had invented something new.
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It was that it had done what
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Japan used to be famous for, patient and methodical cost -cutting, and done it better.
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And it was not staying in Japan.
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In Detroit, CareSoft Global took apart BYD's cheapest car, the little Seagull hatchback, the car sold in Britain as the Dolphin Surf.
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The man running that company had been a chief engineer at General Motors and had spent 45 years in the industry.
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His verdict was that the Seagull was a huge problem for American car makers.
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A bargain basement price and still a quality product.
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Ford's own chief executive, Jim Farley, has said publicly that the Chinese are ahead.
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And Andy Palmer, the British engineer who led the development of the Nissan Leaf and went on to run
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Aston Martin, has been warning the industry about China for years.
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So this is no longer one book from one publisher that you can shrug off.
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Japan, America and the people who built
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Britain's own car industry arriving at the same conclusion from different directions.
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So how big is the gap?
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The sharpest number came from UBS.
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The bank's analysts took a seal apart to work out what it genuinely costs to build
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and concluded that BYD has a lasting cost advantage of around 25 % over the established
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Western car makers.
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And their verdict on the car itself was blunt.
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Compared with the mass -market electric cars from the legacy brands, they said, the BYD seal is the better and much cheaper car.
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And here is the part that should really worry the competition.
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UBS estimated that BYD still makes a healthy profit on it, a gross margin of around 16%,
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which the bank said was similar to what carmakers make on ordinary mass -market petrol cars.
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In other words, the seal is not cheap because BYD is losing money to win customers.
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It is cheap because BYD can build it for less and still make money.
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Where does that come from?
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Integration.
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And not just in the drive unit, in the whole company.
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BYD does not design its cars and then go shopping for the pieces.
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It makes its own batteries, it makes its own motors, it makes its own semiconductor chips,
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the small controllers almost every other car maker has to buy in from outside.
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Almost the entire car is made under one roof, and it does it at enormous scale.
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In November 2024, BYD became the first company in the world to build 10 million electric and plug -in hybrid cars,
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and it now builds more than 4 million cars a year.
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Spread the cost of a shared design across 4 million cars and the arithmetic gets uncomfortable for anyone competing against it,
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which, in Britain, now means every badge on your street that is not Chinese.
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Right, quick one before the half of this that actually reaches your driveway.
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If any of this is useful, hit the like button
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because it puts this in front of somebody who is about
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to sign for one of these without knowing what they are signing up to
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and type the badge you drive in the comments one word
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so everyone can see who is here subscribe if you have not
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because this channel follows exactly this all year now the battery
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and this is where it gets interesting
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if you are the sort of person who keeps a car for years
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which in britain is most people most electric cars carry their battery cells inside a sealed pack
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and then bolt
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that pack into the floor a box inside a bigger box
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byd throws out the middle layer its blade battery uses long
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flat cells built directly into the structure of the car the floor of the car
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and the battery are in effect the same thing byd says this makes the body far stiffer
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and protects you better in a crash
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and the seal did earn a full five stars from euro ncap with 89 for adult occupants and 87 for children.
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The battery chemistry deserves credit too.
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BYD's blade cells use lithium -ion phosphate with no cobalt in them at all.
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It is generally regarded as one of the more stable battery chemistries, less prone to overheating than some of the alternatives,
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and it tends to cope well with being charged.. over
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and over for years on paper it is clever careful engineering
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and i am not dismissing it but here is the thing the teardown flagged
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and it does not appear on the spec sheet
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when the cells are bonded into the structure they are much harder to remove
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when the battery reaches the end of its life the design
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that makes the car efficient to build is the same design that makes it awkward to take apart when it is old.
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That is a trade -off, but it is your trade -off, not BYD's.
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And there is a second edge to it.
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When the battery is part of the structure, a hard impact that damages the floor can damage the battery itself.
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A structural battery is far harder to repair than a pack you can unbolt and replace.
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In the worst cases, damage that a petrol car would shrug off can write off the whole vehicle.
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This channel showed you how that works in the video on the scratch
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that wrote off a 50 000 pound car it is the same physics
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and british insurers have noticed the seal sits in insurance groups
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in the high 40s up to 50 on some versions near the very top of the scale
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which tells you what the people pricing the risk expect to repair to cost now back to
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that integrated drive unit because this is where your money is everything
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Everything so far was about what BYD saves.
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Everything from here is about who pays for it later.
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And the answer is not BYD.
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Folding eight components into one unit is a genuine achievement on the production line.
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Lower cost, lower weight, fewer joints to leak or rattle.
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On day one, as a new car, that is a good story.
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The trouble only shows up later, on your drive, after the warranty runs out.
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When parts are separate, a failure is often a small, contained repair at any decent garage.
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A sensor dies, you replace the sensor.
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But when eight things are combined into one sealed unit, a fault in any one of them can mean replacing the whole assembly
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because there is nothing left to open up and fix on its own.
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Think about what that means in practice.
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A seal on its second owner, five or six years old, the warranty finished, and something in that drive unit starts playing up.
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Maybe a temperature sensor.
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Maybe a position sensor on the motor.
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On a conventional car, a routine job.
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On this design, you could be looking at a whole unit.
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And what does a replacement drive unit for a seal cost in Britain, from a dealer or an independent, six years from now?
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Nobody knows.
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Not the dealer, not the insurer, not the independent garage that has been fixing Fords for 30 years.
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That is the honest answer.
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These cars have not been on British roads long enough to find out.
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And that uncertainty does not sit with the manufacturer.
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It sits with you, or with whoever buys the car from you.
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Then there is the question of where you live.
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BYD's network in Britain has grown fast, to around 125 sites by the end of last year.
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That is real progress for a brand this new.
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But it is concentrated around the cities and big towns, and it is still a fraction of what the established brands have built over decades.
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If you live in London, Manchester or Birmingham, you are fine.
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If you live in the Highlands, in mid -Wales or at the far end of Cornwall,
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the nearest authorised BYD service point may be a very long drive away.
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And that matters more on this car than on most, because its design, the integrated modules and the battery that is part of the floor,
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depends heavily on the manufacturer's own diagnostic equipment, software and trained technicians.
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An independent garage can plug into the standard diagnostic port.
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It cannot necessarily get into the deeper layers of the battery management system without BYD's own tools and access.
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That wall is coming down as the independent trade catches up, but today it is there.
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And then there is the used market, which is where cheap -to -make and cheap -to -own finally collide.
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A new seal starts at £45 ,730.
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Used ones are already being advertised from around £28 ,500.
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As this channel covered in the video on Chinese car values, Chinese brands have been among the fastest depreciating cars in Britain,
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and price cuts on new stock only push used values down further.
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In owner satisfaction, the picture is mixed too.
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In Auto Express's owner survey, the BYD brand's result was described as disappointing.
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The cars impressed the engineers on the bench.
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The ownership experience is still being proven on the road.
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Now, to understand why this teardown rattled the Japanese so badly, you need to know who BYD used to be.
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Go back to 1995 in Shenzhen.
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A chemist called Wang Chuanfu borrows money from a relative and starts a company with around 20 employees.
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not a car company a battery company making rechargeable cells for mobile phones
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and the way he competed was almost embarrassingly simple the japanese giants
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that ruled batteries sony
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and sanyo made their cells with expensive automated machinery wang could not afford any of
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that so he studied how their batteries were made and rebuilt the process using people where the machines should have been.
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People called it primitive.
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It worked.
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His batteries came in at a fraction of the Japanese price.
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BYD did not build its first car until 2003, when it bought a struggling state -owned carmaker and started making petrol saloons.
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And how did it learn to build them?
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Much the same way.
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Its first big seller, the F3, looked remarkably like a Toyota Corolla.
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The company, being carefully taken apart on that Japanese workbench,
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had spent its own youth learning from the cars of the very engineers who were now studying it.
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And the timing carries a hard kind of irony.
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In 2003, the same Japanese publisher put out a long study of China's car industry and concluded that
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China was about 10 years behind Japan.
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10 years!
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Remember that the next time somebody tells you the Chinese are a decade behind.
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In 2008, Warren Buffett quietly bought a stake in BYD when almost nobody outside
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China was paying attention.
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By last year, BYD was building far more fully electric cars than Tesla. In 2023,
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it became the first Chinese carmaker ever to exhibit at Japan's
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biggest motor show on the home turf of the giants it once learned from.
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And then it put the seal on sale to Japanese drivers in the home market of the companies whose cars
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it had studied.
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Toyota, meanwhile, has reportedly taken apart several BYD models of its own to learn from them.
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Britain remembers what a well -made 1990s Japanese car was.
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A Corolla or a Civic that was still fundamentally sound at 200 ,000 miles.
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That reputation took decades of real roads to build.
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The question with BYD is whether the engineering that impressed the teardown teams becomes that kind of proven,
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durable reputation, or whether it stays impressive on the bench and never gets properly tested by 15 British winters.
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And that is the honest limit of the whole exercise.
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A teardown can tell you how a car is built.
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It can count the parts, weigh the pieces, and estimate the cost almost to the last pound.
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What it cannot tell you is how that car behaves at 150 ,000 miles after a decade of salted roads, potholes and cold wet winters.
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Or what it costs to fix when something finally lets go.
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Those answers only come from time on the road.
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And these cars have not been on British roads long enough to give them up.
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The owners are the ones who will find out.
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So let me give you the practical read, because that is why you are here.
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First, if you are looking at a BYD, find your nearest authorised service centre.
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Not the showroom, the service centre.
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Where will the car actually go when it needs work?
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If it is more than an hour from home, factor that into the cost of owning it.
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Not a deal -breaker, but real.
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Second, understand how you are paying.
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A great many of these cars in Britain are on PCP deals, or salary sacrifice and company car schemes,
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cards, helped by the low tax on electric company cars.
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If you are leasing and handing it back, most of the long -term risk in this video lands on somebody else.
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If you are buying outright, or you might want to get out early, BYD's used values in Britain are not yet established,
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and the price cuts on new cars do not help.
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Third, the warranty, which is genuinely one of the best around.
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6 years, or 93 ,750 miles on the car,
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and 8 years, or 155 ,350 miles on the battery, and the battery cover transfers to the next owner.
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If you are buying used, check exactly how much is left, for which parts, and get it in writing.
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And on a used one, ask for a battery health report.
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The battery warranty guarantees that it will keep at least 70 % of its original capacity for those eight years.
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A health check before you buy tells you how far down
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that road the car already is and whether the warranty is ever likely to be needed.
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Fourth, before you sign anything, ring your insurer and ask what a claim involving the battery structure looks like on this car.
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Not whether they will insure it.
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What happens after somebody reverses into you in a supermarket car park.
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That answer will tell you more about owning this car than any review.
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And the direction has reversed for good.
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For decades, the ideas flowed out of Japan and into everyone else's factories.
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Now, the Japanese are buying Chinese cars to take apart.
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After the seal, Nikkei bought a Zika saloon and took that apart too.
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The teachers are back at the workbench, and this time they are the ones taking notes.
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Worth remembering the next time somebody tells you the Japanese badge is automatically the safe one.
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So here is where I land.
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The engineers who opened up that seal found something that genuinely unsettled them.
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Not bad engineering, very good engineering.
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Disciplined, integrated and cost -controlled in a way the people who invented modern manufacturing recognized immediately
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because it was their own method used against them.
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UBS puts BYD's cost advantage at around a quarter.
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That took 30 years to build.
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It cannot be copied quickly, and it is why BYD went from nowhere to outselling
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Tesla in this country in a couple of years.
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On paper, the seal is a serious car.
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A good range, 5 euro end cap stars, clever battery integration, and a long warranty.
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But the questions that matter most are the ones the teardown cannot answer.
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What the drive unit costs to replace at 100 ,000 miles, out of warranty, at an independent garage.
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What the parts supply looks like in 2030 for a car that only went on sale here in 2023.
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And what happens to a structural battery after a serious knock.
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I am not telling you not to buy one.
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I am telling you to go in with your eyes open.
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If you are leasing for three years and handing it back, fair enough, sleep well.
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If you are buying outright and planning to keep it for a decade, these are the questions to have answered before you hand over the money.
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The teardown found clever engineering.
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What it could not find is the mileage you have not driven yet.
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So, straight talk on what is confirmed and what is not.
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Confirmed and on the record.
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The Nikkei teardown and its published findings.
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The UBS cost analysis.
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The Caresoft teardown and its engineers' comments the Japanese government's teardown exhibition, and BYD's British prices, warranties, and Euro NCAP rating.
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Not yet known, because nobody has had to pay for one yet, what a major drive unit repair actually costs in this country.
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And still developing, BYD's British network, its used values, and the parts picture,
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as the first big wave of these cars comes off finance and lease deals.
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Now the part where you can make this better than anything I can research.
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If you own a BYD, a Seal, a Sea Lion, an Atto 3 or a Dolphin,
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tell everyone in the comments what owning it has really been like.
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What the servicing has been like, whether you have needed anything beyond a routine service,
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and if you have dealt with the warranty, how long it took.
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And if I have got anything wrong in this video, a figure, a price, a detail, say so.
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I would rather be corrected by someone who knows than leave a mistake sitting there.
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And the Japanese did not start with BYD.
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Years earlier, the same publisher took apart a Tesla
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and an engineer from a major Japanese carmaker looked at what was inside and said three words that went around the world.
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That story is coming soon on this channel.
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Subscribe now so you do not miss it.
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Thanks for watching and I will see you there.
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Vocabulaire et conseils d’expression pour cette leçon
Cette leçon d’expression orale s’appuie sur la vidéo « Engineers Tore Down a BYD — What They Found Should Terrify Britain's Carmakers ». Les mots qui reviennent le plus souvent : byd, battery, japanese, cost, seal. Cette vidéo contient 304 phrases et 3805 mots à répéter en shadowing. La partie parlée dure 23:29. Le locuteur parle à un rythme naturel d’environ 162 mots par minute, proche d’une conversation courante. 82 % des mots font partie des 3 000 mots les plus courants en anglais ; le reste mérite d’être vu avant de commencer.
Vocabulaire clé de cette vidéo
15 mots de la vidéo à retenir, avec leur prononciation et leur sens :
| Mot | Prononciation | Sens |
|---|---|---|
| seal nom | /siːl/ | sceau, cachet |
| publisher nom | /ˈpʌblɪʃɚ/ | éditeur, éditrice |
| tesla nom | /ˈtɛslə/ | tesla |
| repair verbe | /ˈɹiːpɛɚ/ | réparer |
| maker nom | /ˈmeɪk.ɚ/ | faiseur, fabricant |
| garage nom | /ɡəˈɹɑʒ/ | garage |
| sensor nom | /ˈsɛn.sɚ/ | détecteur, capteur |
| integrate verbe | /ˈɪn.tɪ.ɡɹeɪt/ | intégrer |
| component nom | /kəmˈpoʊ.nənt/ | composant |
| clever adjectif | /ˈklɛv.ɚ/ | habile, agile |
| lease nom | /liːs/ | contrat de bail, bail |
| genuinely adverbe | /ˈd͡ʒɛn.ju.ɪn.li/ | authentiquement, réellement |
| badge nom | /bæd͡ʒ/ | plaque, insigne |
| invent verbe | /ɪnˈvɛnt/ | inventer |
| reputation nom | /ˌɹɛpjʊˈteɪʃən/ | réputation, renommée |
Les verbes à particule que vous entendrez
| Mot | Prononciation | Sens |
|---|---|---|
| come off verbe | se détacher, se décoller | |
| find out verbe | découvrir, savoir | |
| open up verbe | ouvrir | |
| work out verbe | /ˌwɝk ˈaʊt/ | calculer |
| come down verbe | descendre, tomber | |
| drive away verbe | repousser | |
| get out verbe | sortir | |
| hand over verbe | remettre, donner |
La grammaire de cette vidéo
Les structures que le locuteur utilise le plus, avec les mots exacts de la vidéo :
| Structure | Dans la vidéo |
|---|---|
| « Used to » used to + verbe — une habitude ou un état passé qui n’est plus vrai | used to arrive · used to be |
| Present perfect continu have/has been + -ing — une action commencée avant et toujours en cours | has been warning · has been fixing |
| Present perfect have/has + participe passé — une action passée qui compte encore maintenant | have told · have noticed · has taken |
| Voix passive be + participe passé — l’accent est mis sur ce qui arrive, pas sur qui le fait | had been built · is made · is generally regarded |
Prononciation à surveiller
- Les sons « sh » et « zh »: publisher /ˈpʌblɪʃɚ/, garage /ɡəˈɹɑʒ/, reputation /ˌɹɛpjʊˈteɪʃən/, integration /ˌɪn.tɪˈɡɹeɪ.ʃən/, structural /ˈstɹʌk(t͡)ʃəɹəl/
- Mots longs — placez bien l’accent: genuinely /ˈd͡ʒɛn.ju.ɪn.li/, reputation /ˌɹɛpjʊˈteɪʃən/, integration /ˌɪn.tɪˈɡɹeɪ.ʃən/, manufacturer /ˌmænjʊˈfæktʃəɹə/, diagnostic /ˌdaɪ.əɡˈnɑ.stɪk/
Les sons difficiles pour les francophones :
- /h/ — il se souffle, il n’est pas muet: whoever /huˈɛvɚ/, nowhere /ˈnoʊ.(h)wɛɹ/, hybrid /ˈhaɪ.bɹɪd/, headline /ˈhɛd.laɪn/
- /tʃ/ et /dʒ/ — à ne pas adoucir en « ch » et « j »: genuinely /ˈd͡ʒɛn.ju.ɪn.li/, badge /bæd͡ʒ/, bench /ˈbɛnt͡ʃ/, manufacturer /ˌmænjʊˈfæktʃəɹə/, chase /t͡ʃeɪs/
- /r/ anglais — langue recourbée, sans frotter la gorge: warranty /ˈwɔɹ.ən.ti/, repair /ˈɹiːpɛɚ/, garage /ɡəˈɹɑʒ/, integrate /ˈɪn.tɪ.ɡɹeɪt/, petrol /ˈpɛt.ɹəl/
Comment s’entraîner avec cette vidéo
- Écoutez la vidéo en entier une fois sans parler et notez les mots que vous ne connaissez pas.
- Commencez à la vitesse 0,75×, répétez phrase par phrase, puis revenez à la vitesse normale quand cela devient facile.
- Enregistrez-vous et comparez avec l’original, en faisant attention à des mots comme seal, publisher, tesla.
Qu'est-ce que la technique du Shadowing ?
Le Shadowing est une technique d'apprentissage des langues fondée sur la science, développée à l'origine pour la formation des interprètes professionnels. Le principe est simple mais puissant : vous écoutez de l'anglais natif et le répétez immédiatement à voix haute — comme une ombre suivant le locuteur avec un décalage de 1 à 2 secondes. Les recherches montrent une amélioration significative de la précision de la prononciation, de l'intonation, du rythme, des liaisons, de la compréhension orale et de la fluidité.