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by kuratkull 412 days ago
My experience from all the cars i have driven is that GPS shows 3-5km/h less than the car does. (In Europe)
1 comments
Cthulhu_ 412 days ago
That's actually a legal requirement (had to google some to get the source): [0]. And a graph: [1]

[0] https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:42...

[1] https://www.reddit.com/r/dataisbeautiful/comments/16mquqv/sp...

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kuratkull 412 days ago
The graph seems a bit too much. It says that GPS 110 means ~125 on the odo. Although from personal experience I'd say it's more around a delta of 5 at those speeds, and 3 for lower speeds.
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detaro 412 days ago
it has to fall somewhere in the shaded area. So if it shows 125, then the actual speed must be between 125 and 110 at worst.
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