rihallix

I just noticed that the speed limiter was changed on the GLC43 MY18.

In the MY17 dealer ordering guide the GLC43 is limited to 155mph

But in the MY18 GLC43 the dealer ordering guide lists the GLC43 top speed at 130mph. The GLC63 is limited to 155mph.

Loving my MY17 all the more. Of course this is all theoretical. But it's nice to know.

Wonder why they dropped the limit on the GLC43s?

PaulE550

Short answer is likely to meet stricter fuel efficiency and pollution standards for fleet-wide certification. As we get closer to the 2025 52.5 mpg fleet fuel efficiency mandate all auto makers will be playing with whatever they can (electronic limiters, lighter materials, etc.) to achieve those numbers to make the governments happy. There also seems to be a push by a few politicians to limit the top speed of vehicles for safety reasons. As they call for lower speed limits on various city and local streets, they also think that vehicles shouldn't be able to go as fast as they do.

rihallix

That doesn’t make sense. The CAFE standards record emissions and fuel efficiently at specific speeds, not the maximum speed. I read up on this stuff and like to put down transit advocates who don’t realize that in the burbs transit emits more greenhouse gases than cars.

only when you fill a bus or train is it efficient for emissions and fuel efficiency. In suburbs load factors are lower.

ItalianJoe1

No way top speed was changed to fit emissions. Probably switched to a tire with a lower max speed rating.

midesaka

My guess would be that it was done to differentiate, and boost sales of, the GLC63S.

672club

dog 6-30-16 had 155 but believe all subsequent dog’s had 130. belated thanks for rocklin