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Well, what got me thinking about a large car again was when I went through some old Consumer Reports mags that I kept.
Not sure if the newer ( aka whale) Crown Vic bodies did as well as the aero bodies that started in 1992, but I think the FE figures should be about the same.
Anyway, CU used to list mileage in several ways, one being "expressway" which I guess meant a steady 55mph, level ground.
In the Jan. 1992 CU issue there's this for expressway mpg:
Pontiac Bonneville 3.8l.--35
Crown Vic 4.6l.--31 (and that was with a 3.08 rear, not 2.73)
Olds 88 Royale 3.8l.--35
Buick Roadmaster 5.7l.--31
Some smaller cars tested around the same time were rated above 40 mpg expressway.
Ray Mac
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