Mercedes-AMG had to pump the brakes on its One hypercar… because it idles at 5,000 rpm

When your plan is to take a powertrain from Formula 1 and adapt it for road-car use, there are bound to be hurdles. Mercedes-AMG is experiencing this with its bonkers One hypercar. According to a story in Road & Track, the F1-derived engine likes to idle at 5,000 rpm and that is less than ideal for the purposes of emissions.
The goal is to have the car idle happily at 1,200 rpm but down there the engine isn’t comfortable. It’s breaking up. It’s not stable. This is, after all, an AMG Petronas turbo V6 normally ripping down a race track as the revs soar over 10,000 rpm and onward towards 15,000 rpm.
Fret not, hypercar fans. AMG engineers have already started cranking on further engine development. This sets the project back nine months from its initial delivery estimate, but AMG’s top brass say the car is once again moving forward.
It should be ready for arrival some time in the second half of 2020.

Leave a Reply

Your email address will not be published. Required fields are marked *

The maximum upload file size: 64 MB. You can upload: image, audio, video. Links to YouTube, Facebook, Twitter and other services inserted in the comment text will be automatically embedded. Drop files here

15 responses to “Mercedes-AMG had to pump the brakes on its One hypercar… because it idles at 5,000 rpm”

  1. Sjalabais Avatar

    It should be ready for arrival some time in the second half of 2020.
    I don’t like delays and have now diverted my allocated funds towards purchasing a bunch of MPM Erelis for my housekeepers.

    1. Vairship Avatar

      Elio Motors and Aptera will also be bidding to fill your order.

  2. outback_ute Avatar

    Magnificent crazy bastards

  3. mdharrell Avatar

    “…engine likes to idle at 5,000 rpm…”
    Yeah, I’ve been there. It’s most often a simple fix, like readjusting the idle screw or remembering to push in the choke. Sometimes it’s just that the carburetor linkage itself is binding somewhere. If all else fails they should try rejetting the carb, but usually it’s not necessary to go that deep.
    I would say I don’t see why this should take them until the second half of 2020 to fix, but I’ve had projects like that, too…

    1. 0A5599 Avatar

      The engine doesn’t implement the self-ejecting function of the connecting rods at 5000 RPM, or are you talking about one that’s calibrated in revolutions per month? Or maybe Whitworth RPM?

      1. mdharrell Avatar

        I’ve learned to be primed to shut off the engine quickly, which I’ve discovered is a useful response to a considerable variety of developments.

        1. Troggy Avatar

          …and German at that, so the trailing zeros would indicate a high degree of accuracy.

          1. mdharrell Avatar

            Not necessarily. It may only indicate a high degree of precision.

      2. Vairship Avatar

        This is a highly advanced engine, meaning the crankshaft isn’t driven by connecting rods but by grinding wheels.

    2. nanoop Avatar

      It’s a rather modern car, so it might be a vacuum leak, too.

    3. Manxman Avatar

      I’ve had old Honda motorcycles with vacuum carbs that would spontaneously rev up to high rpm’s while waiting at a stop light. Scary, but I got used to it after several rebuilds that never fixed the problem.

  4. Borkwagen Avatar

    Maybe they could talk to some ex-Ferrari F50 engineers to see how they managed to street-ify a Formula 1 motor.

    1. Rover 1 Avatar
      Rover 1

      Or talk to Honda about how they got the carbed, points controlled ignitioned 250 CC six of 1964 that revved to 18000 rpm to idle.

  5. GTXcellent Avatar

    I don’t see the problem – it’s supposed to be a HYPER car – I know when my kids get hyper they don’t idle below 5000 rpms either.

  6. Kieselguhr Kid Avatar
    Kieselguhr Kid

    Seems like a car begging for a stop-start system.