Just got a 1990 Crown Vic.
I love it.
They start allowing them 1995 and above, which make no sense, since they allow for the 1990 Mercury Grand Marquis, which is the essentially the same car.
Was free.
I put $240 into it for brakes (good), tires (crap), and a bit of engine tuning to get it past PA state inspection.
Bench seats and a fuel injected V8. Heaven. I usually do not drive with the overdrive on until I hit cruising on the highway, don't like the shift at 38 mph when I'm accelerating into traffic.
This thing is an adventure. Steering is "interesting". You really have to plan your turns in advance, and tight city streets with people parked on corners is fun. Bouncing curving exit ramps are a roller coaster.
Good new tires, shocks, and an alignment should help, at least on the highway.
Supposed 14-22 MPG. I have no idea, I've only filled it once so far, $38, and I seem to get about 5 days of driving out of that. Odometer's broken, so that's the best I'll get as far as possible numbers.