Simon said:They are just as inaccurate,
My trip computer is accurate to within +/- 0.5mpg. I've checked it several times.
Malachy said:which works from the speedo reading giving from the electronic speed sensor that goes into the ecu to gauge distance, we all know how accurate speedos are!
Except it doesn't, proof of which can be found if you reset the average speed recorder whilst travelling at an indicated 70mph - it doesn't show 70mph, it shows about 65, which is on-par with what my GPS reckons.