Torque app speed

[jpiazzam3]

I was playing around with the torque app on my head unit today and noticed that it displays a few mph lower than the speedo. I know that it’s a know thing for the speedometer to be off but why would the ecu know the accurate mph and not display it correctly on the speedometer.

[Arith2]

Speedo itself has 3 to 5% added to whatever the vehicle actually reads for whatever reason. This can be coded out. You're not crazy and your car isn't broken.