The 2016 Cadillac CTS-V, equipped with its supercharged 6.2L V8, has an EPA-estimated fuel economy of 17 MPG combined. To be clear, it’s no Prius. No one looking for a 640-horsepower, track-capable super sedan expects hybrid-like gas mileage. The CTS-V’s purpose is to deliver thrilling performance and a visceral driving experience. Its fuel consumption is a tolerated, if not overlooked, consequence of that mission.

City and highway performance

The EPA further breaks down the CTS-V’s fuel consumption, showing 14 MPG in the city and 21 MPG on the highway. The city figure reflects stop-and-go driving, where the engine often idles or accelerates from a standstill, increasing fuel usage. The highway rating, while still modest, shows the benefit of constant speed cruising in the transmission’s higher gears. The 8-speed automatic transmission helps reduce fuel consumption at highway speeds, keeping the engine at a relatively low RPM when possible. Remember that aggressive use of the throttle, even on the highway, will quickly diminish any fuel savings.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2016 Cadillac CTS-V at $3,400. This calculation assumes 15,000 miles driven per year, with 55% in the city and 45% on the highway, and uses the national average fuel price at the time. Your fuel costs will depend on your driving style, location, and current fuel prices. Someone living in a city with high fuel costs and driving aggressively will likely spend more than $3,400 per year. A driver in an area with lower gas prices who mainly uses the car for highway cruising might spend less.

Real-world expectations

While the EPA provides a standardized test, real-world fuel economy often differs. Drivers of the 2016 CTS-V should expect to see numbers close to the EPA estimates with a conservative driving style and significant highway time. The attraction of the supercharged V8 is strong, and frequent hard acceleration will lower the average MPG. Averages closer to 12-15 MPG in mixed driving wouldn’t be surprising, especially with frequent high-RPM driving. Check CTS V MPG across all years.

How it compares

The CTS-V’s fuel economy is similar to other high-performance sedans of its time. The BMW M5 (F10 generation) with its twin-turbocharged V8 typically gets around 15 MPG combined. The Mercedes-AMG E63 S, also with a twin-turbo V8, has similar numbers. The Dodge Charger Hellcat, with even more horsepower, is known for even poorer fuel economy. These cars, like the CTS-V, appeal to a specific buyer. Someone prioritizing performance over fuel efficiency accepts the compromise. This understanding helps to contextualize all Cadillac fuel economy data.

Tips to maximize efficiency

Squeezing every mile from each gallon might not be the main goal for a CTS-V owner, but some steps can improve fuel efficiency. Avoid hard acceleration and braking. The supercharged V8 is responsive, but gentle throttle inputs will save fuel, particularly in city driving.

Maintain correct tire inflation. Underinflated tires increase rolling resistance, making the engine work harder and use more fuel. Check your tire pressures regularly and inflate them to the recommended levels on the driver’s side door jamb.

Minimize idling. Letting the engine idle wastes fuel. If you expect a long stop, like waiting at a train or picking someone up, turn off the engine. Modern cars restart quickly and efficiently.

Use cruise control on the highway. Keeping a consistent speed reduces unnecessary acceleration and deceleration, improving fuel economy. Be mindful of traffic and adjust your speed, but maintain a steady pace when possible.

Consider using premium fuel as recommended by Cadillac. While the CTS-V might run on lower octane fuel, using premium can optimize engine performance and potentially improve fuel efficiency, especially under demanding driving. The engine was designed to perform best and achieve optimal MPG with premium fuel.