back to article Toyota admits its engines are overrated – by its own power testing software

Toyota apologized on Wednesday for an incident involving the fraudulent certification of its diesel engines that resulted in a corrective order from Japan's transport ministry. The local Ministry of Land Infrastructure, Transport and Tourism revealed last week that results of on-site investigation determined test engine …

  1. Winkypop Silver badge
    Joke

    Despicable acts

    “Liter”

    Oh, and you Toyota!

  2. xanadu42
    Unhappy

    "Oh, What a Feeling"

  3. Filippo Silver badge

    Wait, do people buy Toyota because of engine power?

  4. Pascal Monett Silver badge
    Trollface

    "the ministry confirmed 'fraudulent acts' had been committed"

    Oh, my goodness. Toyota also has a rogue engineer ?

  5. Dan 55 Silver badge

    ディーゼルゲート

    That's the translation of Dieselgate according to Google Translate.

    1. Adrian Harvey
      Headmaster

      Re: ディーゼルゲート

      Not really a translation- if you say those characters aloud, the sounds ‘Dieselgate’ come out your mouth! That character set too is the one mainly used for foreign loan words.

      Though as various -gate scandals have nothing to do with gates, and Watergate had nothing to do with water I’m not sure which way you would chose to translate this anyway. Perhaps Japan has another naming scheme for scandals entirely? If so, perhaps we could borrow it! I’m tired of -gate already…

      Only one more use of -gate should be tolerated- when Mr Musk messes up we have to have an Elongate!

      1. Mike 137 Silver badge

        Re: ディーゼルゲート

        "Only one more use of -gate should be tolerated"

        As was pointed some time back, as -gate has come to mean "scandal", the original instance should now be called watergategate (because watergate was the name of the building where it occurred).

        1. This post has been deleted by its author

      2. zuckzuckgo

        Re: ディーゼルゲート

        > Only one more use of -gate should be tolerated- when Mr Musk messes up we have to have an Elongate!

        That "-gate" is reserved for when The Register uncovers the secret neurolink - p0rnhub connection.

      3. Doctor Evil

        Re: ディーゼルゲート

        "Only one more use of -gate should be tolerated- when Mr Musk messes up we have to have an Elongate!"

        That's really stretching the metaphor beyond its elastic limit!

  6. Anonymous Coward
    Anonymous Coward

    All Fine Now

    From an underground newspaper: "Toyota Software Engineer Watanabe Ichiro (34) committed suicide by jumping in front of a commuter train today. 27,000 commuters were inconvenienced."

    1. munnoch Bronze badge

      Re: All Fine Now

      Fuck. The alternative being the window seat and lifelong humiliation. I don't miss working in Japan at all...

  7. Kurgan

    So maybe...

    So maybe the issue is that NO engine manufacturer can actually make engines that perform as the regulations require, so every manufacturer is actually cheating since at least 10 years?

    1. mirachu Bronze badge

      Re: So maybe...

      Maybe you should read the article. Toyota was over-reporting power, not under-reporting emissions.

      1. Gene Cash Silver badge

        Re: So maybe...

        It's still "bullshit numbers from the manufacturer" whether it's power or emissions. That's cheating in my book.

      2. Roland6 Silver badge

        Re: So maybe...

        I can see the legal vultures descending on this; another mis-selling compensation bandwagon.

        Interestingly, this doesn’t seem to be a simple overstating of power figures like Ford etc have been found to have done, with cars like the Ford Mustang having a claimed 320 hp but independent testing finding it was closer to 290 hp.

      3. tip pc Silver badge

        Re: So maybe...

        Stating your 200hp engine emits x emissions when a real Toyota 200hp unit emits x+ emissions is under reporting emissions especially when the Toyota is claiming things that aren’t true and conning consumers & competitors.

        No idea if Japan charges extra taxes on higher emission cars but customers may have gotten charged less tax on their Toyota than a rivals same hp vehicle because of this when in fact the Toyota engine had less power all along but the actual capable unit was in a higher band.

      4. Mark 65

        Re: So maybe...

        Maybe you should read the article. Toyota was over-reporting power, not under-reporting emissions.

        Maybe that's how they complied with the emissions regs but appeared competitive with peers on output?

    2. JoeCool Silver badge

      Nope

      The regulations are easily meet-able, if you aren't competing on cost or performance.

      Once Car co #1 cheats and appears to have a "more efficient" engine, they charge a premium. Car co #2 is now loosing market share and/or profits, unless they cheat.

      What I do NOT get in that whole affair is why no other car co figured out what VW (etc.) were doing.

      1. Anonymous Coward
        Anonymous Coward

        Re: Nope

        Because they're doing it too, and don't want to get caught.

        What I do not get is why VW, having already gotten caught, doesn't turn in the others.

  8. Anonymous Coward
    Facepalm

    Irregularities during horsepower output testing

    Translation: Our hack to increase performance got found out.

    1. Mike 137 Silver badge

      Re: Irregularities during horsepower output testing

      "Our hack to increase performance got found out"

      Or more accurately, "our hack to exaggerate performance got found out".

    2. Craig 2

      Car manufacturers hate this one simple trick!

      "The company will take a step back and make company-wide efforts to identify how we were discovered and prevent a recurrence to ensure they won't catch us again," it added.

  9. Anonymous Coward
    Anonymous Coward

    I'm an expert in this and still have trouble understanding what happened here

    Regular commentard here, but AC for obvious reasons.

    I work in a diesel engine test lab for a company you would have heard of. The lab I work in has dozens of engine test cells, of a range of capacities, and develops and certifies mostly diesel engines. I am responsible for the data quality of measurements, including engine power, which is calculated from measured torque and speed. I'm only one level removed from the guy whose name goes on the reports sent to the EPA, CARB, etc. I've participated in audits from those organisations (we passed with flying colours.) I've been doing this for well over a decade.

    I've also helped with measurements on the end of line engine tests in two of our production facilities, where our engines are "power set" by having their max injector timings set so they all make the same peak torque within a percent or two.

    I don't understand how the engine software comes into play here. Yes, it would be illegal for them to have production software on the ECM which differs from the software used during the certification test, but what are they gaining here from just "smoothing" it? In our lab, and all engine test labs I've visited, the power is calculated from the measurements made by test cell hardware, not the ECM. Those instruments are calibrated regularly and traceable to a national laboratory such as NIST in the US. The calibrations and linearity verifications are spelled out in legal requirements such as 40 CFR Part 1065 in the US.

    1. Rob F

      Re: I'm an expert in this and still have trouble understanding what happened here

      I'm not an expert at all, so your mileage may vary (pun intended).

      Reading this article https://apnews.com/article/toyota-cheating-tests-diesel-daihatsu-apology-02680eb9bab1a555ea43208d69a0c86e it seems like there was a systematic way that they were falsifying the tests and I think they had an agreed formula for how much they would improve the results with the component testing so that when the engine software also provided values, they would also match, so it wasn't caught out.

    2. TReko Silver badge

      Re: I'm an expert in this and still have trouble understanding what happened here

      Is there any reason that the engine control software is not open sourced?

      Surely that would make verification easy, especially after the German auto companies gassing people with their diesel emissions?

  10. Mark432

    Wow, Toyota really are toast, I wonder how long they last, especially when they have no cars to sell in about 10 years time even though they keep saying evs are a priority

    1. Anonymous Coward
      Anonymous Coward

      They appear to be clueless. Prius continues to do well with Uber self-employed but really not self-employed drivers.

      In SUV, compact and saloon land just about everyone has gone German.

      And then other brands they own have been savaged and steippednof identity. 30 years ago Subaru was the working mans hero car, and could be found on every street. Now they're bland near rebadges of Toybotas being shipped with poor engine choices. The 2.5 boxer turbo is as old as the hills, but will they invest? Lexus have virtually vanished.

      The Hilux has the rep but if you have more than two brain cells a van is a much better option than the pickup.

      And they're behind on pure EV too, if that's your thing.

      Japanese company though so steering is literally a supertanker with a teaspoon. Someone with a bit of vision could turn it around.

      1. Anonymous Coward
        Anonymous Coward

        I'm assuming you're being sarcastic with your response given how many vehicles Toyota sells per year. In case you hadn't heard the chairman doesn't give a fuck about EVs as he knows they're not really a solution, as the rest of the world's early adopters are gradually working out - many firms dropping production, resale values in the shitter and slower uptake once the fanboys are already onboard. The only countries they sell well and have market penetration are the Scandies, and that's because they massively subsidise them whilst penalising ICE cars which isn't really sustainable. As a wise man once said - you're not going to save the planet one great big 2.5 tonne EV shitter at a time.

  11. captain veg Silver badge

    Manufacturer's power claims

    I didn't realise that anyone expected them to be objective.

    There used to be a thing called "SAE gross" horsepower, which was entirely fictional, and yet quoted by almost all manufacturers.

    Reputable reviewers put examples of the machines actually offered to the public on a rolling road brake and measure the power really delivered. Manufacturers' claims have always been meaningless.

    -A.

    1. werdsmith Silver badge

      Re: Manufacturer's power claims

      I've never driven my car to produce its maximum power, never needed to get that loud.

      It's not a racing car and I don't drive it on a closed track.

      Torque is useful in normal road driving. Power not so much.

      1. captain veg Silver badge

        Re: Manufacturer's power claims

        Torque and power are freely interchangeable. That's what the gearbox does.

        -A.

  12. Anonymous Coward
    Anonymous Coward

    Does this apply to other Toyota owned (Arguably ruined) marques?

  13. Anonymous Coward
    Anonymous Coward

    The performance was measured using engine control units (ECUs) running software that differed from that used in mass production. Toyota said using the wrong software meant test results produced "values [that] appear smoother with less variation."

    Just sounds a bit VW to me.

  14. Henry Wertz 1 Gold badge

    WRC

    Toyota also got banned from WRC for 1 year, for cheating. When the WRC teams (in the early 1980s) began moving from carbuertors (where there had to be some compromises in airflow to maintain any kind of driveability) to turbocharged fuel injected engines, they went up from like 150HP to like 700 in a few years, and there were lots of fatalities. So from sometime in the early or mid 1980s to present they have a restricter plate (and I assume a limit on boost as well) in there to limit them to like 300HP. They run on often not that smooth tarmac, gravel, and ice and snow, and roads that are curvy as all hell (one of the rules is if they get over some certain peak speed, the route is curvier the next year, even if it's by sticking some bollards in a straightaway they must drive around) so it's more about driver reflexes, handling, and brakes anyway than about all-out horsepower. (If they were just holding the pedal down and steering left they could run those 700HP+ setups, but then it'd be NASCAR. Side note, here in the US (that have any interest in motor sports) generally have a hard time even wrapping their heads around my being into car racing, but not interested in NASCAR. It's very hard to get WRC races here, they are not on any channel even if I got cable, dish, or streaming. )

    1995 Toyota was doing very well, and the cheat they used was ingenious; there was a vacuum-operated flap inside the air intake. These cars are inspected! They'd look at the intake on the car, it looked restricted. You'd have the part off on the bench looking at it, it looked restricted. When air flow went through or enough engine vacuum built up or something, this huge flap would flap up in there and voila, no more restriction, the car was making like 400-450HP. Apparently it was only actually discovered because someone on the team got remorse, or perhaps felt slighted and got revenge, by suggesting one of the inspectors take a closer look at this thing, like run some vacuum on it or take a look at it while someone blips the throttle or whatever. They got all points the team and team drivers had gotten so far through the 1995 race year revoked, and banned outright from WRC for the 1996 race year.

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