Hey guys i was just wondering if anybody had some info on how accurate the speedo is on a 94 C280???
I have a bet running :-)
Thanks

 

There's no one accuracy rate for all C280s, or any other car. There's a design tolerance I'm sure, but it gets lost in real life due to fluctuating tire pressures, different tires sizes, etc.

If you had a GPS unit you could test your C280. It's more accurate than a car speedo so it should give you a good number for your car.

 

you should most certainly test it against a GPS, best way I know to do it. Lugnut is right.