| Older Mercedes are not known... for their fuel efficiency. I owned a W114, 250/8 for about 20 years. The mileage on the highway was typically 20, but around town it was more like 12-13, and mixed driving was 15-16.
You have a pretty heavy car for a car with a relatively small displacement "mill"; the engine works hard, and being carburetted with a fair number of emission control devices does not help...
Good luck,
JR |