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Audi A4 Speedometer

26 messages,  Last post on Apr 14, 2009 at 8:50 AM

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#2 of 26
Same Problem by dan48646
May 14, 2007 (2:45 pm)
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I think mine is about 4mph off. i found out when i set the speed reminder to tell me when i'm going over 85mph but on the speedometer it says 89 when it goes off. annoying yes, but i'll live. what really pissed me off was my Oxygen sensor needing replacement at 5,000 miles.
#3 of 26
A4 Speedometer by irmob
May 17, 2007 (5:40 am)
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After comparing the speedometer and the trip computer to my external GPS system, which I assume is perfect, I realized that the speedometer is 2mph fast and the trip computer is 3mph slow (at 70mph), well within the reported industry standard of 10%. So, all is well.
#4 of 26
Re: Speedometer [irmob] by walter48
Jul 16, 2007 (8:18 am)
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Replying to: irmob (May 14, 2007 11:27 am)

I just purchased a 2007 A4 and find I have exactly the same problem. GPS says 66 MPH while speedo says 70 MPH (about 6% high). Has anyone noted whether of odometer is also off 6%? On a 36,000 mile lease this is 2160 miles. I could be charged over $400 for miles I never drove.
 
Walt
#5 of 26
Re: Same Problem [dan48646] by zmp
Jul 18, 2007 (8:32 am)
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Replying to: dan48646 (May 14, 2007 2:45 pm)

Hi there. I just read your posting where you mentioned you had to replace the O2 sensor. Did you notice anything wrong with the car before replacing the sensor? Have you noticed any improvement in the car after replacing the O2 sensor?
 
I'm asking because I just bought a 2007 A4-2.0T Quattro 6M this month, and I noticed the car is experinecing a turbo lag (delay) and no low end torque. I test drove another car same model different color and didn't notice the turbo lag at all. I took it back to the service department, they drove both cars (test drive and mine) and said there was nothing wrong with my car but the only difference they noticed was that mine drives more like an automatic because you can't feel the change of gears I like feeling the kick when switching gears up and down. Please let me know. Thanks.
#6 of 26
Re: Speedometer [irmob] by psiklops
Dec 04, 2007 (1:44 pm)
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Replying to: irmob (May 14, 2007 11:27 am)

I have a 2008 A4 with the same problem. I first noticed it was off when my GPS said 73 and the speedometer said 77. I checked with the dealership and they said they can't look into it based on just a GPS reading. I then found one of those police radar units that sit by the side of the road and tell you your speed. Sure enough, it said 56 while my speedometer said 60.
 
I called the dealership and told them to check it during my 5,000 checkup. They checked and said that it was operating within 1 or 2 mph of the other two cars they drove it against. Well, of course they read the same - they all came from the same place! This is despite the dealerships claim that the speedometer is "precision calibrated and sealed" at Audi's factory. Audi should recognize that they're not as "precise" as they think they are.
 
So now I just have to do math every time I go down the road...
#7 of 26
Re: Speedometer [psiklops] by shipo
Dec 04, 2007 (2:59 pm)
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Replying to: psiklops (Dec 04, 2007 1:44 pm)

FWIW, many German cars (Mercedes, BMW, VW, and Audi to name a few) are optimistic by a few MPH about how fast you are going, that said, the odometer and the trip computers are usually dead on accurate.
 
Best Regards,
Shipo
#8 of 26
Re: Speedometer [psiklops] by irmob
Dec 06, 2007 (1:01 pm)
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Replying to: psiklops (Dec 04, 2007 1:44 pm)

When I told my dealer that my 2007 A4 speedometer was reading 70 when I was only going 67, they replied that the industry standard is to be within 10% of actual speed, so my speedometer is OK. I realize now that this is the first car in which I have ever checked the speedometer, so all of them have likely had an error in them. At least now I know how to judge my speed.
#9 of 26
Re: Speedometer [irmob] by walter48
Dec 06, 2007 (2:07 pm)
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Replying to: irmob (Dec 06, 2007 1:01 pm)

The reply from the dealer is a bunch of crap. I've had a GPS for years and used it on a lot of American "cheaper" cars. It was ALWAYS within 1 MPH. I have a new Toyota RAV4 and the speedo totally agrees with my GPS while my much more expensive AUDI speedo reads 5 MPH high at 70 MPH. This is unacceptable, I thought German engineers were into precision. When I'm going to bring my A4 in for my 5K check I'm going to tell the dealer to fix this problem. If they tell me that the industry standard is 10% accuracy I'm going to ask for the AUDI specs in writing. I want to hear this from the factory. Also if it reads fast then my 36K miles lease is only 33K miles. That is fraud. I'm going to ask them to explain that.
#10 of 26
Re: Speedometer [walter48] by shipo
Dec 06, 2007 (2:12 pm)
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Replying to: walter48 (Dec 06, 2007 2:07 pm)

Like I wrote earlier, every German car I've evern owned or driven has been optimistic in the Speedometer department. I believe they are actually designed that way on purpose and as such, your Audi dealer won't be able to "fix it".
#11 of 26
A4 spedo. by steve150m
Dec 22, 2007 (10:07 am)
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I have an 03 A4, 04 S4 and a 01 Jetta all with spedo. readings of 4 to 5 mph high. All were checked with gps. computer in car seems accurate. A good friend of mine who is in the automotive OEM business says by law, spedo accuracy must be +or - 4 percent for cars sold in the U.S. When I compared my odometer to the freeway markers my car only recorded 9.6 miles over a 10 mile stretch. The above speed check was at an indicated 80 mph.

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