The 2021 Cadillac CT5 with the 2.0L turbo 4-cylinder gets 26 MPG combined. Drivers accept this as a compromise to get stylish design and a comfortable ride instead of maximum fuel efficiency. This Cadillac sedan isn’t trying to compete with the Prius. It’s for customers who want entry-level luxury without the high price or fuel consumption of the V6 models. It’s a conscious decision.

City and highway performance

EPA estimates for the CT5 are 23 MPG in the city and 32 MPG on the highway. The city figure reflects the engine’s heavier workload in stop-and-go traffic, where the turbocharger is often needed for acceleration. While generally smooth, the 10-speed automatic transmission can sometimes feel hesitant in the city, which also affects fuel consumption. The CT5’s highway figure is more attainable out on the open road. Because the engine can run a low-RPM cruise thanks to the many gears, it uses less fuel and provides a relaxed driving experience ideal for long trips.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2021 Cadillac CT5 2.0L at $2,250. This is based on driving 15,000 miles per year and using national average fuel prices. Keep in mind that your actual fuel costs may vary based on your driving habits, fuel type, and local prices. This number is just a benchmark, useful for comparing vehicles, but should be considered an estimate.

Real-world expectations

Although the EPA provides standardized testing, real-world fuel economy can vary. Drivers who often drive aggressively or in heavy traffic might see averages closer to the low 20s. However, drivers who accelerate smoothly and stick to highway driving might exceed EPA estimates. The CT5’s driver-selectable modes (Tour, Sport, Snow/Ice, and My Mode) can also change fuel consumption. “Tour” mode prioritizes fuel efficiency, which can help drivers get better mileage.

How it compares

The CT5’s fuel economy is mid-pack within its class. With its blend of power and efficiency, the BMW 330i achieves an EPA-rated 28 MPG combined, a noticeable advantage. The Mercedes-Benz C300 gets a similar 25 MPG combined. The Acura TLX with its base 2.0L turbo manages 25 MPG as well. These small differences probably won’t sway a buyer’s decision. But they do give a slight edge to German rivals. Buyers may also consider the Lexus IS 300 (25 MPG combined), though that model focuses on reliability and refinement rather than performance in its base form. See CT5 MPG across all years to check its fuel economy against older versions.

Tips to maximize efficiency

Gentle acceleration helps maximize fuel economy in the CT5 2.0L. Avoid accelerating rapidly, especially from a stop, because this strains the turbocharger and uses more fuel. Smooth, progressive acceleration allows the engine to operate more efficiently, particularly in city driving. The car’s 10-speed transmission shifts early, allowing it to operate efficiently.

Maintaining consistent speeds on the highway will also improve fuel economy. Using cruise control on long trips helps prevent unnecessary fluctuations in speed. A steady RPM helps the engine burn fuel more efficiently. Avoid using a heavy foot, which causes the transmission to downshift rapidly, reducing the potential for fuel savings.

Proper tire inflation is often ignored, but it can significantly affect fuel efficiency. Check your tire pressure regularly and make sure it matches the recommended levels on the driver’s side doorjamb. Underinflated tires create more rolling resistance, requiring the engine to work harder and use more fuel.

Reduce unnecessary weight in the vehicle. Extra cargo in the trunk or cabin adds weight, forcing the engine to expend more energy. Remove anything unessential for your daily commute. This is especially important because the CT5 isn’t the lightest vehicle in its class.

Regular maintenance, including oil changes and air filter replacements, can also maintain good fuel economy. A clean air filter provides proper airflow to the engine, and fresh oil reduces friction, allowing the engine to run better. Poor maintenance can substantially reduce MPG over time. Check out all Cadillac fuel economy data.