The cetane number is perhaps the characteristic most associated with premium diesel fuel, as an analogy to premium gasoline with higher octane ratings.
Fuel mileage ranged from the Spirit´s 42.5-mpg average to the 35.1-mpg average of the Aero.
The strongest selling point to choosing the TDI Beetle over the other trim lines was that the gas mileage was out of this world!
How to save money by improving fuel economy and performance in any vehicle by up to 30% or more without expensive gadgets. Gas Mileage Bible is a must for anyone who drives a car. Simple scientific explanations on what causes losses and gains in fuel economy. Clear-cut gas-saving solutions, breaking down into straightforward categories: "no tech", "low tech", and "high tech".
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