Speed limiter - what actually is it? 175 or 186 mph
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From: Boston area
2016 E63 Wagon
Speed limiter - what actually is it? 175 or 186 mph
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.
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.
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2014 E63S; AMS 100 octane ECU dyno tune; EDOK TCU tune; BB intakes; sprintbooster
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Out Of Control!!
Joined: Jun 2004
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2014 E63S; AMS 100 octane ECU dyno tune; EDOK TCU tune; BB intakes; sprintbooster
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C63 W204 / E63S W212 / E63S W212
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From: Boise ID
2014 E63 S, 2017 GLE 43, 2020 Cadilac Escalade, 2019 Lamborghini Performante
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
After all the upgrades and tune to remove the speed limiter I did I hit 218 mph ...ran out if road
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AMG E63s sedan
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W463 G550, C292 GLE63s
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C63 W204 / E63S W212 / E63S W212
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C63 W204 / E63S W212 / E63S W212
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.
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From: Boston area
2016 E63 Wagon
However - it also uses the GPS sensor as a sanity check - which is how they can detect if you are on a dyno.
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From: Boston area
2016 E63 Wagon
Not saying you did not see 218 on the speedo. Any chance you changed the gearing? Or put on aftermarket wheels?
Thread Starter
Super Member
Joined: Apr 2018
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From: Boston area
2016 E63 Wagon
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.
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Joined: Dec 2013
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From: Boise ID
2014 E63 S, 2017 GLE 43, 2020 Cadilac Escalade, 2019 Lamborghini Performante
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.
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Joined: Dec 2013
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From: Boise ID
2014 E63 S, 2017 GLE 43, 2020 Cadilac Escalade, 2019 Lamborghini Performante
Thread Starter
Super Member
Joined: Apr 2018
Posts: 609
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From: Boston area
2016 E63 Wagon
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.
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.
