[tizan]

This has been a problem with other cars in the past and led to class action suits because of warranty being exaggerated. Better than comparing it to a different car might be using mile markers on the freeway. Might need to go 50 miles or more to notice an effect as tenths don't register on the odometer. Tire wear can be an issue too.

The trip meters register 1/10 th of a mile.

tire wear should not cause any noticeable odometer measurement difference .
A worn out tire radius is 8/32 inch less...so for a tire and rim that say has a radius of 20 inches...it will cause a difference of 1.2% in distance travelled per rotation...so if you drive 100 miles it might show 101 miles. For a hundred mile highway trip there might be other things that will cause differences of 1% or 0.5%...you know like whether you are on the outer lanes on curves etc

Also does not the EPA put these on dynamometers to measure efficiency...distance measurements and the odometer discrepancies will appear there too...unless they do a VW cheat and have a test mode odometer reading.