# Sat Nav vs car speedometer speed which is correct ?

**URL:** <https://boards.straightdope.com/t/sat-nav-vs-car-speedometer-speed-which-is-correct/554066>\
**Category:** Factual Questions\
**Created:** [September 17, 2010, 11:49am UTC](https://boards.straightdope.com/t/sat-nav-vs-car-speedometer-speed-which-is-correct/554066 "2010-09-17T11:49:48Z")\
**Posts on this page:** 1\
**Page:** 3

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**Author:** ![jz78817](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/jz78817/32/1028_2.png) [@jz78817](https://boards.straightdope.com/u/jz78817)\
**Post date:** [September 21, 2010, 12:42am UTC](https://boards.straightdope.com/t/sat-nav-vs-car-speedometer-speed-which-is-correct/554066/41 "2010-09-21T00:42:30Z")

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> [@crazyjoe](#):
>
> > [@Rick](#):
> >
> > In current production cars, I think you would be hard pressed to find a non ABS car. If the car does not have ABS, a simple electronic pickup in the final drive will very adequate.
> 
> I just turned in a leased Pontiac G6 (2007 model year) earlier this year that did not have ABS. It wasn’t the bottom-tier “value edition” either, it was the base model with the v6 engine package (which added several thousand dollars worth of options, but not ABS).

then like he said, there’s a pickup and a tone wheel in the final drive. there’s still no speedometer cable.

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