BRUSSELS BELGIAN
Old Whig
6% Optimistic
I have manually calculated EVERY fill up since I bought my B5.5 Passat and compared it with the trip computer. The computer is about 6% optimistic. By the way, when I do the 205-65-16 tire experiment, it should correct the trip computer and the speedometer. As an added bonus, every 100 miles on your odometer will actually be 108 miles traveled. These numbers only apply with the 16" factory wheels, and a switch from 205-55-16 tires to the taller 205-65-16 size.
I have manually calculated EVERY fill up since I bought my B5.5 Passat and compared it with the trip computer. The computer is about 6% optimistic. By the way, when I do the 205-65-16 tire experiment, it should correct the trip computer and the speedometer. As an added bonus, every 100 miles on your odometer will actually be 108 miles traveled. These numbers only apply with the 16" factory wheels, and a switch from 205-55-16 tires to the taller 205-65-16 size.