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ProjectM96 · 08-01-2012, 10:21 AM

No matter what car I am in and no matter what GPS I use, I get the exact same result.

GPS shows 2.5 mph lower than the speedometer.

I tried this test with a 2000 Honda Accord, 1996 Mazda Protege, 2003 Chevy Tahoe, 2012 Ford Focus, 2008 Toyota Rav4, 2001 Nissan Altima, and my 2000 Porsche Boxster. Same results in all of them.

I used my Garmin in all of them.

I tried TomTom in 3 of the cars mentioned above. Same result. GPS is 2.5mph slower.

08-01-2012, 10:21 AM	#4
ProjectM96 Registered User Join Date: Nov 2010 Location: Philly Posts: 594	No matter what car I am in and no matter what GPS I use, I get the exact same result. GPS shows 2.5 mph lower than the speedometer. I tried this test with a 2000 Honda Accord, 1996 Mazda Protege, 2003 Chevy Tahoe, 2012 Ford Focus, 2008 Toyota Rav4, 2001 Nissan Altima, and my 2000 Porsche Boxster. Same results in all of them. I used my Garmin in all of them. I tried TomTom in 3 of the cars mentioned above. Same result. GPS is 2.5mph slower. __________________ 00 2.7 5SPD MT