MPG for the Cadillac Catera on ttcih.org ; Avg MPG; 1 Vehicle; 88 Fuel-ups; 24, Miles Tracked; View All Cadillac Cateras. ; Avg MPG; 2 Vehicles; Fuel-ups; 67, Compare the Cadillac Catera side by side vs. its competition for price, specs 17 MPG City / 24 MPG Hwy, 18 MPG City / 27 MPG Hwy, 20 MPG City / Learn more about the Cadillac Catera with The Car Connection review. Find prices, release Gas Mileage 17 mpg City/24 mpg Hwy. Engine Gas V6, Detailed specifications and fuel economy information on the CADILLAC CATERA . CADILLAC CATERA · City, 14 mpg ( litres/km). Hwy, 22 mpg. Cadillac Catera Reviews: Read 6 candid owner reviews for the Cadillac Catera. Get the real truth Cons: gas mileage good on Interstate; ok in town. Cadillac Catera price range, seller's blue book values, buyer's price, listings near you, 18 MPG Combined Cadillac Catera KBB Expert Review. Cadillac Catera. Search by make for fuel efficient new and used cars and trucks. See the Cadillac Catera Gas Mileage figures for both the city and highway. There is Fuel Economy data for each trim as well as a description of the. View detailed gas mileage data for the Cadillac Catera. Use our handy tool to get estimated annual fuel costs based on your driving habits.