[eostopia]

I've read in other sources that the speedometer on the Eos is somewhat off.

As in, people have said that the speedometer says they are going 60 miles per hour when theyre really going 75.

Has anyone else had this problem?

 

[geoffa1]

I've read in other sources that the speedometer on the Eos is somewhat off.

As in, people have said that the speedometer says they are going 60 miles per hour when theyre really going 75.

Has anyone else had this problem?

Comparing the speedo with the speed given by the GPS, I would say mine reads 5-6% high ie 106 kmh on the speedo = 100 kmh actual.

 

[Z-man]

Comparing the speedo with the speed given by the GPS, I would say mine reads 5-6% high ie 106 kmh on the speedo = 100 kmh actual.

That is a reasonable difference. A 15 mph difference at 60mph is not.

eostopia - do you have stock wheels and the proper tire sizes? If not, a different diameter tire can effect your speedo, but again, it is not likely that it will effect it that much.

Do you have a source for the 60/75mph off claim?

-Z

 

[neh321]

Comparing the speedo with the speed given by the GPS, I would say mine reads 5-6% high ie 106 kmh on the speedo = 100 kmh actual.

Mine's the same as yours Geoff, and is pretty much in line with all cars.

 

[eos3]

Mine's the same as yours Geoff, and is pretty much in line with all cars.

Same here, 105 to 110 km/hour on the meter and 100 on the GPS. My wife's Passat shows 100% accuracy!!!

I have 17" wheels.

fred

 

[nail-z-gull]

I always believed the speedo's were accurate within 10%. Explaining why most traffic police and speed cameras allow 10% tolerance over the legal limit before recording it as an offence.

 

[Daneel]

Comparing the speedo with the speed given by the GPS, I would say mine reads 5-6% high ie 106 kmh on the speedo = 100 kmh actual.

This is pretty normal. I believe there is a law in the US that states that the speedometer CANNOT display a speed lower than the car is actually traveling at but a little higher is okay.

As a result most manufactures error on the side of caution and display a value 5 - 6% lower.

My memory is not totally clear here - but my experience has always held that theory up.

My Eos now, and Jettas in the past, show a slightly lower speed than the GPS.

E

 

[geoffa1]

In Australia, the design rules (ADR's) for cars allow a tolerance of +/-10% on Speedo accuracy, which is a federal government thing - however road rules are controlled by state governments. The police protocol in Victoria is to give you a 3% margin of error, and after that it is up to you to know if your speedo reads accurately or not.

Admittedly, most speedos are optimistic, but if its the other way round - its your problem.

 

[silvershadow]

In Australia, the design rules (ADR's) for cars allow a tolerance of +/-10% on Speedo accuracy, which is a federal government thing - however road rules are controlled by state governments. The police protocol in Victoria is to give you a 3% margin of error, and after that it is up to you to know if your speedo reads accurately or not.

Admittedly, most speedos are optimistic, but if its the other way round - its your problem.

Regarding the Victorian 3% speed camera tolerance - I am waiting for a lawyer with a modicum of common sense to receive a fine and then challenge this tolerance through to the High Court.

Given the fact that the Australian Standards specify accuracy to be within +/- 10%, the principle of natural justice automatically means this tolerance should apply to speed measurement for infringement purposes. The Victorian tolerance is extremely harsh - even the zealous NSW "revenue collectors" allow the 10% tolerance to comply with the Australian Standard.

 

[bneeos]

I have 235/40R18 tyres and at 105 on the speedo my GPS reads 100 kph. I have never heard of a new vehicle reading the other way while being OEM standard. My way to read accurately is to fit 245/40R18 tyres next time.

 

[eos3]

I always believed the speedo's were accurate within 10%. Explaining why most traffic police and speed cameras allow 10% tolerance over the legal limit before recording it as an offence.

Be careful when driving roads in France: the tolerance is 5% now...
;-)
Fred

 

[Doolallygirl]

Don't speed = no issue

 

[SiJ2000]

thats funny!

 

[eos3]

thats funny!

right... funny how I tend to drive slower when roof down like today and yesterday (it's 20°C here...), not because of noise, but just to fully enjoy the combination of pleasant feelings (warmth, freedom, air flow...), and then drive a lot faster when roof closed.. hey our EOS is a Coupé, isn't it? ;-)

 

[Eos_Up]

Finally got around to checking my speedometer against GPS. At both 40 and 50 MPH, it appears that the speedometer is somewhere between reading exactly the same as the GPG to maybe 1 MPH faster. I've also noticed when approaching a radar speed indicator, it's the same as comparing to GPS. We have several of these radar speed readouts in my area to discourage speeding.

FWIW, my GPS is a Nuvi 760. Further note, if you're going to compare GPS to the speedometer, you should get in a steady state condition (cruise control on) and then compare the two readings. As I understand GPS speed reading, they are a result of comparing several internal "fixes" and then averaging them.