Quote Originally Posted by Mr.Tiv
I think my dad averages 24mpg in a 2003 Crown Victoria, which is, as I recall, actually, slightly over 4,000lbs. Surprsingly, that is only a wee bit worse than the 28mpg I get in a Buick Lesabre(I didn't pick it, so don't laugh at it) and the 30mpg my mom gets in a V6 Fusion.
Sounds about right. I've been averaging 20.5 mpg in my Town Car with about 75% surface street driving. I'm still amazed that a big luxury car with a V-8 can get the good mileage it does.

Fleet
'69 Fleetwood Brougham... 11 mpg
'76 Fleetwood Limo.......... 10 mpg
'95 Lincoln Town Car........ 20.5 mpg