Quote:
Originally Posted by NeighborsComplaint
I really enjoy these wild mileage claims. Here are the 1971 Pontiac GTO Convertible 400-4 V8 4-speed (man. 4) specs in stock form:
•fuel consumption and mileage: average estimated by a-c©: 22 l/100km / 12.8 mpg (imp.) / 10.7 mpg (U.S.) / 4.6 km/l, more data: 1971 Pontiac GTO Convertible 400-4 V8 4-speed (man. 4) Specifications Review
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Estimated doesn't mean real world.
Another key specification not listed is the rear gear ratio.
The devil is in the details.
Real world, actually measured fuel mileage (duplicated multiple times) with a 462 c.i., Quadrajet, 4spd Muncie M20, 27" tall tires and 3.08 gears driven on rolling terrain in MN and WI is 17+ MPG.
I'm sure someone with 2.56 gears or an OD transmission can easily brake 20 MPG.