speed/mpg calc

TDICube

Veteran Member
Joined
Jul 15, 2006
My 06 TDI speedo is ~ 5 mph faster then my 2 GPS's. With this too fast speed, is my MPG calculation of ~ 42 an artificially high number?
Thanks in advance,
TDICube
 

40X40

Experienced
Joined
Feb 12, 2006
Location
Kansas City area, MO
TDI
2013 Passat SEL Premium
TDICube said:
My 06 TDI speedo is ~ 5 mph faster then my 2 GPS's. With this too fast speed, is my MPG calculation of ~ 42 an artificially high number?
Thanks in advance,
TDICube

NO, the ODOMETER is quite accurate as a rule on the 06 cars. You can check its' accuracy against some mileposts on an interstate if you like. Do it over an extended distance, 50 miles or so.

This was much discussed about 2 years ago.. :D

Bill
 

velociT

Top Post Dawg
Joined
May 10, 2006
Location
Not Austin, TX
TDI
06 Jetta TDI *sold*
Supposedly there is a software update to correct the speedo, but I haven't personally talked to anyone who has received it.
 

countryboy9799

Well-known member
Joined
Jun 19, 2009
Location
MN
TDI
None
I would check it over about 3 miles. In 3 miles at 60 mph you should have traveled 180 seconds. Take 3600 and divide that by your seconds per mile to give you your mph.
3600/60 seconds=60mph
 

bulabula

Veteran Member
Joined
Feb 16, 2005
Location
Millersville, MD
TDI
A5 Jetta; A4 Golf 2-door; Dodge Cummins Turbo Diesel
Why not use your GPS and confirm the odometer? Like you did for the Speedometer?

Thats what I did.
 

Tim Birney

Veteran Member
Joined
Dec 14, 2005
Location
Dearborn Heights, MI
TDI
05.5 TDI
velociT said:
Supposedly there is a software update to correct the speedo, but I haven't personally talked to anyone who has received it.
The Software update is bogus.
It will correct the Speedometer by a fraction, and corrupt the Odometer.
 

40X40

Experienced
Joined
Feb 12, 2006
Location
Kansas City area, MO
TDI
2013 Passat SEL Premium
Tim Birney said:
The Software update is bogus.
It will correct the Speedometer by a fraction, and corrupt the Odometer.


Exactly! And it is an official VW TSB too. I am pretty sure it is in the stickies...

Bill
 
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