Lot 13136857: 1973 Cadillac DeVille Coupe

The 1973 Cadillac DeVille wasn’t exactly designed with fuel economy in mind! According to EPA ratings from that era, the ‘73 Sedan DeVille was rated at 7.5 MPG — it actually made Consumer Guide’s list of the 12 Worst Gas Guzzlers of 1973.

That said, real-world owner data shows a bit better numbers. Folks tracking their fuel economy on Fuelly report an average of about 10.5 MPG combined for the 1973 DeVille. Your mileage will definitely vary depending on how you drive it — these big 472 cubic inch V8s (220 hp) were built for smooth cruising, not sipping fuel!

With a curb weight over 5,000 pounds and that massive V8 under the hood, premium fuel will be your friend here. Would you like me to help you find similar Cadillacs on Classic.com, or do you have any other questions about this beautiful land yacht?