21 MPG combined isn’t going to win the 2024 Cadillac CT5 V AWD any hypermiling awards, and it shouldn’t. This isn’t a Prius competitor; it’s a powerful, all-weather sports sedan developed for drivers who prioritize performance and luxury over ultimate fuel efficiency. The target customer understands this trade-off and likely owns another vehicle that sips rather than gulps when absolute economy is required. They want sharp handling, confident acceleration and undeniable curb appeal, and they are willing to accept mid-pack fuel consumption along the way.

City and highway performance

The EPA estimates the 2024 CT5 V AWD at 18 MPG in the city and 26 MPG on the highway. The city figure reflects the reality of stop-and-go driving, where the 3.0L twin-turbocharged V6 is working harder and the 10-speed automatic is shifting frequently. The highway number is more achievable on longer road trips driven at consistent speeds. However, enthusiastic use of the throttle, even on the open road, will quickly bring that 26 MPG figure down as the turbos spool up to deliver extra power.

Annual fuel cost

The EPA estimates an annual fuel cost of $2,750 for the 2024 Cadillac CT5 V AWD. This calculation is based on driving 15,000 miles per year and using the national average fuel price for premium gasoline, which this engine requires for optimal performance and longevity. Individual costs will vary depending on driving habits, local fuel prices, and the percentage of city versus highway driving. This figure represents a baseline expectation for owners who drive a typical annual mileage.

Real-world expectations

While the EPA estimates provide a starting point, real-world fuel economy can vary significantly. Aggressive driving, frequent short trips, and cold weather can all negatively impact fuel consumption. Owners who regularly push the CT5 V’s performance should expect to see average MPG numbers closer to the city estimate, or even lower. Conversely, drivers who prioritize smooth acceleration and maintain consistent highway speeds will likely achieve figures closer to the EPA’s 26 MPG estimate.

The all-wheel-drive system, while beneficial for traction, also adds weight and increases drivetrain friction, contributing to lower fuel efficiency compared to comparable rear-wheel-drive models. You can also view CT5 MPG across all years.

How it compares

The CT5 V AWD’s fuel economy places it among other performance-oriented luxury sedans. The BMW M340i xDrive, with its turbocharged inline-six, achieves a slightly better 25 MPG combined. The Mercedes-AMG C43 Sedan, with similar performance, posts a nearly identical 21 MPG combined. While these differences may seem small, they can add up over time, especially considering the premium fuel requirement. The Audi S4, a competitor, manages 24 MPG combined, offering a slight edge in efficiency.

Buyers choosing the CT5 V prioritize styling, driving dynamics, and brand cachet, and are often less concerned with squeezing every last mile out of each gallon than those opting for more economy-focused models.

Tips to maximize efficiency

Take advantage of the CT5 V’s drive modes. Selecting “Tour” mode will optimize engine and transmission settings for efficiency, reducing throttle response and promoting earlier upshifts. While “Sport” and “Track” modes enhance performance, they significantly impact fuel consumption.

Maintain proper tire inflation. Underinflated tires increase rolling resistance, forcing the engine to work harder and reducing fuel economy. Check tire pressures regularly and inflate to the recommended level found on the doorjamb sticker.

Avoid excessive idling. If you’re stopped for more than a minute, turn off the engine. Modern engines are designed to restart quickly and efficiently, and idling wastes fuel. This is important in urban environments.

Anticipate traffic flow. Smooth acceleration and braking conserve fuel. Avoid sudden starts and stops by looking ahead and anticipating changes in traffic patterns. Use cruise control on the highway to maintain a consistent speed.

Keep up with routine maintenance. Regular oil changes, air filter replacements, and spark plug maintenance ensure the engine is running at peak efficiency. Refer to the owner’s manual for recommended maintenance intervals.

For all Cadillac fuel economy data, continue browsing FuelEconomyHub.com.