Has anyone else noticed that the mph registers about 2 mph less than what Google Maps shows? Google Maps consistently matched the speedometer on my 2018 Jeep that I traded in.
I beg to differ... it really depends on the GPS's sampling rate and how many satellites it has locked onto. I've learned this because my brother and I have run several track racing / logging apps along with various aftermarket GPS units. These are used for coaching, improving lines, testing differences (like tires), etc and getting a fast, accurate GPS costs money.At highway speeds, GPS will actually be more accurate than your speedometer. This is not the case going 25 mph though, so be careful there.