Cruise control not accurate?

[bwayne]

I use the ACC a lot on our Maverick. I also have a TomTom gps on the window. I have noticed that the gps reads about 2 mph under the cruise set speed. I don't know which is accurate, if either. Has anyone else noticed a discrepancy? Since the speedometer is digital can it be adjusted if it is incorrect?

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[r100gs91]

Mine is always 1 mpH optimistic.

 

[gte105u]

That's what I'm telling the officer if I get pulled over... Cruise control must be inaccurate.

 

[Bushpilot]

I believe there is an adjustment in Forscan that can be made. Beyond that, I know nothing.

 

[Raymundo76]

I use the ACC a lot on our Maverick. I also have a TomTom gps on the window. I have noticed that the gps reads about 2 mph under the cruise set speed. I don't know which is accurate, if either. Has anyone else noticed a discrepancy? Since the speedometer is digital can it be adjusted if it is incorrect?

I don't have my Mav yet; but in my Mazda CX-5 the differen

I use the ACC a lot on our Maverick. I also have a TomTom gps on the window. I have noticed that the gps reads about 2 mph under the cruise set speed. I don't know which is accurate, if either. Has anyone else noticed a discrepancy? Since the speedometer is digital can it be adjusted if it is incorrect?

I do not have my Mav yet; but on my Mazda CX-5 the difference typically varies between 1 & 2 MPG . The GPS is higher. Suggest that these estimates are about 1 MPG +-, so the difference is not unreasonable. Which is correct? I do not know. But just to be safe I drive at no more than 7 MPG above the posted speed limit.

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