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So question for car guys on speedometers.....
By:  Sycraft (Administrators; 20781)
Posted on: 11-02-2019 15:42.
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Are they generally very accurate these days or is my cheapass Cruze just some magic speedo that defies normal logic?

Reason I ask as is that I have tested my speedo vs GPS and radar, and the digital readout is accurate to less than 1mph. That's what I'd expect from a modern system that is no doubt reading it with a digital sensor which are quite accurate these days. However when I've argued that online, I get told that no, speedos are off by up to 10% or even more all the time.