- #16 of 26
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Re: Speedometer [bmlexus]
by dspaul
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Apr 27, 2008 (6:34 pm)
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Replying to: bmlexus (Apr 27, 2008 5:17 pm)
No way !!! I've had the AWD Lexus IS300, and although it is nice I much prefer the way the Audi's drive. We get 5 months of winter in New England, and nothing beats the Audi Quattro for traction in the winter. But, that being said the speedo. issues annoys the hell out of me. Audi is bringing in a "supertech" to look at it tomorrw. I'll keep you guys posted as to what transpires...
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- #17 of 26
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Re: Speedometer [dspaul]
by bmlexus
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Apr 28, 2008 (2:33 pm)
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Replying to: dspaul (Apr 27, 2008 6:34 pm)
I've had the AWD Lexus IS300, and although it is nice I much prefer the way the Audi's drive
Ever checked your speedometer of your lexus with a GPS?
How accurate is it?
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- #18 of 26
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Re: Speedometer [bmlexus]
by dspaul
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Apr 28, 2008 (4:13 pm)
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Replying to: bmlexus (Apr 28, 2008 2:33 pm)
Nope got rid of it a "company car" - for another Audi....
It couldn't hack the NE winters.... I admit it was more luxurious, but the Audi's are sportier, and drive better.
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- #19 of 26
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Re: Speedometer [psiklops]
by dadas78
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Apr 28, 2008 (4:15 pm)
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Replying to: psiklops (Dec 04, 2007 1:44 pm)
I have an 2008 A4 2.0T Quattro with 1,800 miles on it. My speed is off by +2 when checking it against a garmin nuvi 360 purchased last year. Thought I was the only one with issues until i saw this thread
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- #20 of 26
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Re: Speedometer [dadas78]
by dspaul
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Apr 30, 2008 (1:56 pm)
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Replying to: dadas78 (Apr 28, 2008 4:15 pm)
Well they replaced the entire instrument cluster - With No Improvement at all . Still 5mph over according to my Garmin 360, and the road side radar traps. I do appreciate their effort for the 4 days that it took, and the loaner, but am not thrilled about having a nice car w/ a lousy speedometer. They now say it's w/in the acceptable range..... Had they mentioned it, or I noticed it during the test drive, I would not have bought the car !
Guess I'll have to live w/ it....
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- #21 of 26
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Re: Speedometer [psiklops]
by kirenojnosliw
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Oct 30, 2008 (7:59 am)
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Replying to: psiklops (Dec 04, 2007 1:44 pm)
Same Problem for my '08 A4. I first noticed it when I would go past the electronic speed signs that have radar, and they would always be lower then what my speedo was saying. SO I asked the dealer to check it out at my 5k service...and they said it was within the 10% error that the maker says is acceptable. They also said they paced it with another A4 and they showed the same speed.
Mine is a 36k lease, so im a little confused as to when my mileage reads 36k if thats not accurate?
Has anyone actually had this problem resolved? Let me know what they did so I can have the same done!
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- #22 of 26
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Re: Speedometer [kirenojnosliw]
by walter48
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Oct 30, 2008 (9:31 am)
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Replying to: kirenojnosliw (Oct 30, 2008 7:59 am)
First of all a 10% error is totally unacceptable. I read in a previous post that the US regulations were accuracy to within 4%. I checked my A4 with 2 different GPS units on a straight road using cruise control. The results were that the speedo was consistently 7-8% high between 40 and 70 mph. Repeating this test on my Toyota Rav4 (2008) and Pontiac Grand Prix (2005) showed agreement within 1 mph between the speedo and GPS. I don't understand why Audi refuses to admit they have a problem. When I took my A4 to the dealer for the 5K checkup they said the same thing, it was within specs. However when I asked what were the specs, they didn't know. When I called the factory customer representative they didn't know either but said that the local service manager should have all that info. The bottom line is nobody from Audi or the dealer would tell me the specs or would give me the speedo accuracy specifications in writing. So if the dealer said it was 10% ask for the document that said it was 10%. This is not just an annoyance. I also have a lease. If I drive an actual 36000 miles my odometer will read 38,700. I would be charged an extra $540 at the end of the lease.
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- #23 of 26
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Re: Speedometer [walter48]
by tunderbord
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Oct 30, 2008 (12:56 pm)
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Replying to: walter48 (Oct 30, 2008 9:31 am)
i dont think it is a real problem at all. in Europe there is specific law that regulates the speedometer accuracy. The displayed speed must never be lower than actual, and never be greater than 1.1 * Actual Speed + 4km/h. That means, going at 60mph, might be displayed as up to 68mph... So the max error actually is more than 10%.
Excellent article about speedometer readings and errors
And what you see on speedometer is not exactly related what is logged by odometer, as far as i know. Im sure the exact explanation can be found somewhere in the interwebs...
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- #24 of 26
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Re: speedometer by tunderbord
by cjohn6
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Nov 13, 2008 (11:39 am)
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Great article on speedo readings and errors. Thanks!
I have a 2006 A4 Avant with performance suspension. The car consistently shows 3 mph over actual from 20 to 75 mph. It is not a % of speed. Interestingly the mileage is actually reporting low by about 2%. If this is consistent for the cars being leased the concern of over reported miles is unfounded and would be in your favor.
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- #25 of 26
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Re: Same Problem [zmp]
by dspaul
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Nov 13, 2008 (1:25 pm)
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Replying to: zmp (Jul 18, 2007 8:32 am)
I've given up.... Just brought the car back 10,000 miles later for the warranty service. The service manager admitted that it IS a problem, BUT it is within the Audi spec's of 10% off. My GPS (Tom Tom 1), says 5-6mph less than the speedo at highway speeds. Had an '08 A4 Loaner for the day, and it was exactly the same - Speedo read +5mph at 65mph
The odometer seems to be accurate according to the GPS, and the highways mileage markers which are posted every 1/10 mile. -- Go Figure ??
Love the car ! except for the speedo issue.
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