Do you trust your speedometer/trip odometer?

[GasSavers_DaX]

Originally Posted by omgwtfbyobbq

I demand you adjust your mileage logs and drop below 40mpg instantly!

I am adjusting my logs now. My findings show the odometer UNDER reporting by 1.85%...therefore I'm ADDING 1.85% to what the odometer shows, thus raising me higher above 40mpg instantly!

[omgwtfbyobbq]

Originally Posted by DaX

I am adjusting my logs now. My findings show the odometer UNDER reporting by 1.85%...therefore I'm ADDING 1.85% to what the odometer shows, thus raising me higher above 40mpg instantly!

Noooooooo!

[Gary Palmer]

Originally Posted by omgwtfbyobbq

According to mapquest, mine is off by a third of a percent. But then again, mapquest may be off, so who knows?



I demand you adjust your mileage logs and drop below 40mpg instantly!

You are truly Hard Core!!!

[omgwtfbyobbq]

I suppose have to be to drive 55 in CA...

[rh77]

After renting many different vehicles, I'd venture a guess that the Speedo/Odo is off 80% of the time. The most radical is in the Kia Spectra: Actual speed = 60, displayed speed = 65. Toyotas are also a off the mark in this direction, pretty consistently -- especially the Camry. The domestic brands tend to be close to the mark -- Ford and GM tend to be pretty accurate. I haven't come across a vehicle that is faster than it's indicating.

My theory is that the tolerance given to manufacturers to allow a higher reading: makes people think they're going faster, and they slow down. In the meantime, the miles stack-up and the warranty expires sooner

RH77

[jwxr7]

my odo and google earth were within 1/10th of a mile for my 23 mile commute route. That's gotta be within the probable error of things.

[JanGeo]

My xB is reading 10% low on the odometer but I have been adjusting for it all along - it sort of extends the warrenty by 10% which I will not complain about. The Speedometer reads higher than actual of course but the needle doesn't even reach the marks on the dial so I don't look at it much except when reaching redline on the tach. It is nice to see the TomTom, Garmain, ScangaugeII and roadside radar all agree on the speed however.