FastWgn

Theoretical question- I always thought the W212 E63 was limited to either 155 mph / 250 kph or 186 mph / 300 kph. The former for the non "S" and the latter for the "S".
However - in my '16 the limit seems to be 175 mph.

I know the speedo may not be 100%, but that's off the "wrong" way by 10 mph (which I think is HIGHLY unlikely) or 20 mph the "normal" way (which I also think is unlikely, 13% error). Checking the speedo against GPS speed (on radar detector) shows less than 1 mph off in speeds up to 100 mph.

Confused.

Nerof50

175 is the highest I have seen in my 2016 Sedan. That being said, I was starting to run out of room - so did not have the luxury of waiting to see if it would still climb.

timm206

Most ive seen on my 2016 S sedan was 182mph but i had to let off due to room. Bone stock.

PeterUbers

You guys run this fast on an airstrip?

Nerof50

Dry lake bed called El Mirage in Southern California. You can get a permit for the day and no speed limit as long as you obey the rules.

PeterUbers

Sweet!!!

EckFe1

Mine was 155, now 186, tested and confirmed.

FastWgn

Interesting. so there seems to be a spread then. At 175 I definitely felt the car stop accelerating. It was quite obvious.

PeterUbers

I know as you prob do that tuners can dial this up

timm206

Some stretches lool like an airstrip, close enough i say

727E63AMG

It's 186mph stock on my car 100%
After all the upgrades and tune to remove the speed limiter I did I hit 218 mph ...ran out if road

Ds2016E63s

Am I reading this correct? 218 mph in an E63 AMG?

T_Cob

Proof??

Anotherone

I did around 188ish too, thats max for stock.

timm206

How youre gonna do 188 with a stock ecu if vmax for S model is 186? Electronically limited at 186, for the US market at least.

Anotherone

I have a picture but the speedo reads more than 186. We would need to do these runs with a GPS unit to get an accurate reading.

timm206

I see, its just i thought the ecu uses the value provided by the speed sensor(not gps based) to determine when to cut-off power. Reason for asking.

FastWgn

Yup - but my question was for a standard car.

FastWgn

It 100% does,.
However - it also uses the GPS sensor as a sanity check - which is how they can detect if you are on a dyno.

FastWgn

Wow - 218 mph, that 350 kph. Very, very few cars get there. And it requires goobs of horsepower.....
Not saying you did not see 218 on the speedo. Any chance you changed the gearing? Or put on aftermarket wheels?

FastWgn

So it's pretty clear - I'm not crazy. For some reason some cars are limited at 186, some are at 175.
Interesting, wonder why?
I thought for a second that maybe because I'm a wagon I get 175. But you have a 2016 sedan. Same year, same limiter.

727E63AMG

Gearing is stock, wheels were stock as well..I do have a set of 20inch Rohanas but never went over 140-150...just dont trust them as much as I do with the stock ones.

727E63AMG

I dont have any proof of that...the only recording I have of high speeds is me racing two bikes hitting 205mph 4 ppl deep in the car.

PeterUbers

How accurate is a speedometer after 180mph?

FastWgn

In the old days there was <5% error rule, but with electronic speedometers it's a matter of what is programmed in as the error. Most tests today show they are very accurate, usually less than 2 kph (so about 1 mph) and constant.

In my case I used the GPS on the radar detector to check the speed at lower speeds and it's dead on, zero error.