attn: 500SEL and 560SEL owners, what is your average MPG??

[Carson357]

hi, i just wanted to see what others are gettin for average miles per gallon, i have a 1986 EURO model 500SEL which has the newer fuel injection control system, being a 500SEL, most think it to have the frequency valve, this one has all the same features as a 560SEL, with an eha. i drive 190 miles round trip to and from work, and i have averaged19mpg, this is with the A/C on, and driving 75-80mph.
the way i figured this was by filling the tank, driving to and from work, filling the tank again, then dividing the ten gallons it took to refill the tank into the miles driven, 190. i have never needed to figure this, so i would like any input. thanks