Cruze Diesel MPG is Officially Official by Steph Willems February 13, 2017February 14, 2017 Share Comments General Motors’ PR team and ad writers basically have their taglines and talking points written for them now that the Environmental Protection Agency has released fuel economy ratings for the 2017 Chevrolet Cruze Diesel. Rumblings from inside the Renaissance Center late last year caused much speculation as to the oil-sipping model’s thriftiness, and we were told GM was shooting for a 50 mile-per-gallon highway rating. As it turns out, the Cruze crested that bar with room to spare. Announced by a jubilant GM Monday morning, the EPA has estimated the Cruze’s highway mileage at 52 mpg — when equipped with a six-speed manual transmission, anyway. City economy for that model is a far less exciting 30 mpg, or the same as a gas-powered, automatic transmission model. Combined, it works out to 37 mpg in mixed driving. When compared to the previous-generation model, the new diesel sees an 8 mpg jump on the highway, and a 5 mpg increase in combined fuel economy. Estimated range, according to GM, is 702 miles. The nine-speed automatic that gives the gasoline Cruze its marketable 40 mpg highway rating doesn’t work the same magic for the Cruze Diesel, however. EPA estimates for that model ring in at 47 mpg highway, 31 mpg city, and the same combined figure as stick shift units. If you’re prone to long road trips, the transmission choice is clear. While class-leading economy is great, what’s more important to GM — especially in this day and age — is an EPA seal of approval for the Cruze Diesel’s tailpipe emissions. The 1.6-liter turbodiesel apparently passed with flying, or at least satisfactory, colors. As such, the engine’s Tier 3 compliance keeps the engine viable through 2025. Making 137 horsepower and 240 lb-ft of torque in the Cruze, GM’s new oil burner is also found in the downsized 2018 Equinox. Fuel economy figures for the diesel ‘Nox have not been released.