Mk4 TDi Golf - 45 mpg avg from high way and city. City driving is no dip in saving either getting 40 mpg. This car has been well maintained and updated with quality parts from reliable certified mechanics. The turbo, injectors, timing belt, starter, alternator, control mounts and arms. These are the main mechanical items that have been maintained since I have owned it the past 7 years. For the best of the pre mission Volkswagens this has the best of saving money now and not needing to speed more on other products to clean or keep the car being efficient.