Gday guys,

Just wondering how accurate these scangauges are meant to be ? I have a 08 GU 3.0TD manual and I was just wondering what you other guys are getting when travelling at certain speeds?
Only me in the car unloaded, not towing, on cruise mine is saying
80 klph = approx 8 klh on the gauge
90 klph = approx 16 klh on the gauge
100 klph = approx 20 klh on the gauge

I didnt think the efficiency would be that bad at 100 kmh ?? It seems running around town is giving me better figures than on the highway