I am a happy guy. My wife and I just did a trip from central PA to St. Augustine FL and returned today. At our age, we broke the trip down and back into three legs of about 370, 370 and 235 miles. On each leg going down, we averaged 43 + mpg on mid-grade gas. This is actual fill-up mileage, dividing the gallons required to fill the tank into miles traveled. Interestingly, in each case it came within a few tenths of a mpg of the on-board readout! On the way home, we averaged about 42.5 mpg. But coming home we climbed from about 250 feet above sea level to about 2500 feet above sea level during the second day. Our speeds were generally 69-70 mph unless we got into a construction zone. The whole trip amounted to about 1950 miles.
This car has the Budack cycle four cylinder engine and runs the VW 508 spec 0W-20 oil. The car now has about 7800 miles on it. This car is a very comfortable and frugal hiway cruiser! I could not ask for more from a full size sedan running at hiway speeds.