Speedometer reading incorrect... Fix?
Race Director
Joined: Sep 2006
Posts: 19,035
Likes: 269
From: Bentonville, AR
Check odo with some other device/technique. My '02 Boxster's speedo...
I have check the odometer too and it reads the same (long) ni other words if I have 29 on the speedo and am going 25, then in 1 hour I have traveled only 25 miles but the odometer moved 29...
some simple math says then that my car with 104k only actually has about 90k this is a "little" error that can really add up. (hense my concern about resale on high milage cars.
Personally I dont think any 996 is worth less than mine with this many miles unless it is not drivable, rebuild or has some major mechanical/body/interior issues (as mine does not)
In this case I plan to drive the wheels off the thing and get as much out of her as I can.
Ed
some simple math says then that my car with 104k only actually has about 90k this is a "little" error that can really add up. (hense my concern about resale on high milage cars.
Personally I dont think any 996 is worth less than mine with this many miles unless it is not drivable, rebuild or has some major mechanical/body/interior issues (as mine does not)
In this case I plan to drive the wheels off the thing and get as much out of her as I can.
Ed
There is no law concerning odometer accuracy but auto makers are on their honor to maintain a +/- 4% or less error.
Honda got nailed on exceeding this and I think it was regarding leased vehicles and the miles the leasees racked up and in some cases were overcharged for.
While many Porsche owners have posted about speedo readings being optimistic no one to my knowledge has posted about any significant odometer errors.
Sincerely,
Macster.
Burning Brakes
Joined: Mar 2004
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From: Bend, OR
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Burning Brakes
Joined: Mar 2004
Posts: 879
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From: Bend, OR
Yeah, in the tenths of a mile. Most people don't set up experiments and compare the distance readings between odo and gps over long distances. Not as quick and easy as glancing down at the gps speed reading and seeing how off it is from the speedo.
