The 2021 Cadillac CT4 AWD with the strong 2.7L turbocharged four-cylinder engine gets 24 MPG combined. While this isn’t the best fuel economy in the compact luxury sedan segment, it is a reflection of the trade-offs made by drivers who value a unique driving experience more than optimal fuel efficiency.

City and highway performance

The EPA estimates the 2021 CT4 AWD 2.7L will achieve 21 MPG in the city and 29 MPG on the highway. These numbers reflect the engine’s characteristics and the 10-speed automatic transmission. The turbocharger spools up frequently in urban driving, providing quick acceleration, but this impacts fuel consumption. On the open road, the transmission’s multiple gears allow the engine to operate more efficiently, which results in a noticeable improvement. The all-wheel-drive system adds weight and complexity but gives better grip and stability in various conditions, which is a selling point for those in areas with bad weather. Commuters may find the highway number more appealing, while city drivers might visit gas stations more often. The rear-wheel-drive version of the CT4 with the same engine should achieve slightly better fuel economy.

Annual fuel cost

The EPA estimates an annual fuel cost of $2,400 for the 2021 Cadillac CT4 AWD 2.7L, assuming 15,000 miles driven per year and national average fuel prices. This number is important for potential buyers when comparing the long-term cost of ownership to other vehicles. Keep in mind that your fuel costs will vary. Your driving habits, local fuel prices, and vehicle maintenance will affect the actual fuel cost.

Real-world expectations

Real-world fuel economy can be different from EPA estimates. Drivers with aggressive acceleration will probably see lower numbers, but those who drive smoothly and maintain consistent speeds may come closer to the EPA estimates. The 2.7L engine delivers impressive performance when driven hard, but uses more fuel. The CT4’s relatively small fuel tank will mean more frequent stops at gas stations if you often the engine’s high-performance capabilities. Cold weather can further reduce fuel economy, possibly pushing the the annual expenditure above $2,400.

How it compares

Consider the fuel economy of the 2021 Cadillac CT4 AWD 2.7L relative to its competition. The BMW 330i xDrive, a benchmark in this class, gets 28 MPG combined with its 2.0L turbocharged engine. The Mercedes-Benz C300 4MATIC gets 26 MPG combined with its 2.0L turbo. The Acura TLX with its 2.0L turbo and SH-AWD system gets 24 MPG combined, which is similar to the CT4. While the CT4’s MPG isn’t class-leading, its target customer may value engine character and the driving experience more than fuel efficiency. For more information, consult all Cadillac fuel economy data. And you can also review CT4 MPG across all years.

Tips to maximize efficiency

Check your tire pressure. The CT4’s performance tires are sensitive to pressure, and maintaining the recommended pressure ensures correct rolling resistance and better fuel economy. Check tire pressure regularly, especially when the temperature changes.

Accelerate smoothly. It’s tempting to hit the gas with the 2.7L engine, but avoiding fast acceleration can improve fuel consumption. Aim for smooth acceleration and avoid aggressive starts.

On the highway, use cruise control. Maintaining consistent speed on the highway can help fuel economy. Cruise control prevents speed changes and reduces acceleration and braking.

Reduce idling. Idling wastes fuel. Turn off the engine when stopped for more than a few seconds, such as at long traffic lights or drive-throughs, which will help overall fuel economy, especially in the city.

Maintain your vehicle. Regular maintenance, including oil and filter changes, keeps the engine running efficiently, so it consumes less fuel and performs better.