Cadillac Fuel Economy

EPA publishes fuel-economy figures for 36 Cadillac model years in our index, spanning 8 models from 2015 to 2025. Across those, combined economy averages 24.4 MPG.

The most efficient is the 2024 Cadillac Lyriq at 38.0898 MPG combined; the least is the 2015 Cadillac Cts at 14 MPG — a spread of 24.1 MPG across the range. At 15,000 miles a year that gap is worth roughly $4,600 a year in fuel.

Fuel types represented: electricity, premium gasoline, regular gasoline. EPA figures come from a standardized test cycle, so they are comparable between vehicles but will not match what any individual driver sees.