Mine is probably a good worst-case example of city mileage. I've averaged 19.76 mpg over the past 11 months, but my drive to work is exactly two miles each way, and I probably have a good 400 lb load wherever I go (me, infant car seat, as well as a baby stroller, tool kit, and various fluids I carry in the trunk). On the one (mostly) highway trip I was able to get a real mpg figure I was over 25 mpg. Worst single tank was 14.5 mpg with a bad thermostat that wouldn't let the coolant warm up past 60 deg. celcius.

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Robert W. Roe
1984 300SD 170K mi