Speedometer Accuracy on new 07 ST

[Bob Koelling]

My new ST reports 60 mph when my other car reports 55 mph.

The ST is off.

Has anyone else noticed this on thier new 07 ST?

Is this a software load update on these new models?



Thanks

 

[Terry Schultz]

My mph is on the money on my '07 per my GPS. I have a 4.0L. After 60+ tanks of gas, my message center mpg is .5 high, and my gal. used is .5 low. This is after ALL hand calculations since I got my '07.



I got better mpg on my 4.0L '07. about 1 mpg, when I switched to 89 Octane (8 tanks). I now have my recalibrated XCal2 (by Torrie) for 89 Octane and will report the results after two more tanks. So far, I am happy



Terry

 

[Aaron Yarbough]

The speedometet on my 07 4.6L is about +.8 MPH off @ 60MPH which is not bad at all. This is using the GPS unit on my Pioneer AVIC-Z1 navigation system.

 

[Kevin Palmer]

Both my 01 and my 03 read fast according to my GPS. My 03 was 1.7 MPH fast.