16 MPG combined isn’t going to win any lower fuel costs awards, but that’s not the point of the 2023 Cadillac CT5-V with its 6.2L supercharged V8. This car is designed for a specific type of driver: someone who prioritizes raw power, a visceral driving experience, and the unmistakable sound of American muscle over saving a few dollars at the pump. Fuel efficiency is simply a secondary consideration, a trade-off willingly accepted for the performance this sedan delivers.

City and highway performance

The EPA estimates of 13 MPG in the city and 21 MPG on the highway reflect the realities of a high-performance engine. Stop-and-go traffic will heavily penalize fuel consumption, as the supercharger is constantly working to provide instant power. Highway driving, while offering some respite, still requires a delicate foot to avoid using the boost and sacrificing efficiency. The 10-speed automatic transmission does its best to keep the engine in its most efficient operating range, but ultimately, the driver’s style will heavily dictate the final MPG figures. Someone who enjoys the rapid acceleration and throaty exhaust note will naturally see lower numbers than someone trying to conserve fuel.

Annual fuel cost

The EPA estimates that the annual fuel cost for the 2023 Cadillac CT5-V 6.2L V8 is $3,600. This figure is based on driving 15,000 miles per year, with 55% of those miles driven in the city and 45% on the highway. It also uses the national average fuel price at the time of calculation. Keep in mind that your actual fuel expenses may vary depending on local fuel costs, driving habits, and the type of fuel used. While the CT5-V doesn’t require premium fuel, it is highly recommended for optimal performance, which will likely increase your annual fuel bill.

Real-world expectations

While the EPA figures provide a standardized benchmark, real-world MPG can vary significantly. Aggressive driving, frequent short trips, and heavy traffic will all decrease fuel economy. Conversely, careful highway cruising and anticipatory driving techniques can potentially improve upon the EPA’s estimates although exceeding 21 MPG consistently will be a challenge. Owners should realistically expect to see figures hovering around the EPA estimates, with some variation based on their individual driving styles.

How it compares

Compared to other high-performance sedans, the Cadillac CT5-V’s fuel economy is about average. The BMW M3 Competition offers similar levels of performance and achieves around 16 MPG combined. The Mercedes-AMG C63 S, another direct competitor, delivers almost identical fuel economy with 16 MPG. Even the slightly more subdued Audi S4 manages just 24 MPG combined. For buyers in this segment, fuel economy is often less of a concern than performance and driving dynamics. The appeal of the CT5-V lies in its unique blend of Cadillac luxury, American muscle, and track-ready capabilities, a combination that justifies its fuel consumption for many.

Tips to maximize efficiency

Use a light foot on the accelerator, particularly during city driving. The instantaneous power delivery of the supercharged V8 can easily lead to excessive fuel consumption if not managed carefully. Anticipate traffic flow and avoid sudden acceleration or braking whenever possible.

Ensure that your tires are properly inflated. Underinflated tires increase rolling resistance, which negatively impacts fuel economy. Check your tire pressure regularly and maintain the recommended level.

Minimize idling time. If you’re stopped for more than a minute, turn off the engine. Modern engines are designed to restart quickly and efficiently, saving fuel in the process. This is particularly relevant in city driving with frequent stops.

Avoid using launch control and other performance-enhancing features unless you’re at the track. These features consume a significant amount of fuel and are not necessary for everyday driving. Resisting the urge to show off the car’s acceleration capabilities will improve your MPG.

Consider using the car’s driving modes. While “V-Mode” is tempting, using “Tour” mode for relaxed cruising will soften throttle response and allow for slightly better fuel economy on longer trips. Explore CT5 MPG across all years to see how different model years have fared.

For more details browse all Cadillac fuel economy data.