The gas mileage of my 92 245 puzzles me.

30 mpg highway without a/c, 26 mpg highway with a/c, 16 (!) mpg city without a/c.

16 mpg? The car is tuned-up, no starting problems, no fuel smell, no fuel leak, no smoke, no issues, tires are right size and have correct pressure, I am not carrying any loads, just the car itself.

Any ideas? Other than somebody stole my gas?

Argh, how disappointing. My previous 87 245 got 23 mpg in the city and that was in a state of neglect. Both cars are automatics.