Nissan Patrol 4x4 (Africa)

According to my GPS with 33" KM2s my odometer underreads by 5.4% while the speedo is nearly 100% accurate.

Over 15000 km odo distance (normal service interval) the Trol has actually done 15810 km!

So, to work out you proper fuel consumption, you have to add 5.4% to you tripmeter distance.

Correct - not that it helps much when you drive a 4.8

4.1 only becomes 4.3