A combined 24 MPG probably isn’t the first thing on the minds of those considering a 2020 Cadillac CT4 with the 2.7-liter turbocharged four-cylinder. This isn’t a Prius, and it’s not trying to be. This CT4 caters to drivers seeking a combination of modern American luxury, distinctive styling, and a responsive engine, and they accept a reasonable compromise in fuel efficiency to get it.

City and highway performance

The EPA estimates for the 2020 Cadillac CT4 with the 2.7L turbo are 20 MPG in the city and 30 MPG on the highway. While not class-leading, these figures are respectable given the engine’s output and the vehicle’s weight. A buyer prioritizing stop-and-go city driving might find these numbers less appealing, but for those who log significant highway miles, the 30 MPG highway rating will be more relevant. The 10-speed automatic transmission also plays a critical role in optimizing fuel consumption, especially at higher speeds, providing smoother and more efficient power delivery.

Annual fuel cost

According to the EPA, the annual fuel cost for this CT4 configuration is $2,400. This figure is based on driving 15,000 miles per year and using national average fuel prices. While individual driving habits and local fuel costs can cause this number to fluctuate, it provides a standardized baseline for comparison. Buyers should factor this annual expense into their overall cost of ownership assessment, considering it alongside insurance, maintenance, and potential repair costs. You can find all Cadillac fuel economy data on our site.

Real-world expectations

The EPA provides a standardized estimate, but real-world fuel economy can vary significantly based on driving style, traffic conditions, and other factors. Aggressive acceleration, frequent braking, and extended idling will all negatively impact fuel consumption. However, smooth and consistent driving at moderate speeds can often yield results closer to, or even slightly exceeding, the EPA estimates. Potential buyers should consider their typical driving patterns and adjust their expectations accordingly. Using the car’s drive mode selector to prioritize “Tour” or “Eco” settings can significantly improve fuel economy during everyday commuting.

How it compares

The fuel economy of the 2020 Cadillac CT4 2.7L turbo is in an interesting position relative to its competition. The BMW 330i, for example, achieves a combined EPA rating of 28 MPG with its 2.0-liter turbo, making it more efficient. However, the CT4 has a higher horsepower figure compared to the base 330i, a trade-off some drivers are willing to make.

The Mercedes-Benz C300 offers a combined 25 MPG, which is closer to the CT4’s fuel efficiency, but it may not offer the same aggressive styling that Cadillac buyers seek. These comparisons highlight the diverse priorities of luxury sedan buyers. Some want less gas above all else, while others will sacrifice a few MPG for added performance or a distinct look. A full range of CT4 MPG across all years is available here.

Tips to maximize efficiency

Consistent tire pressure is critical for fuel economy, especially considering the CT4’s sporty handling. Check your tire pressure regularly and maintain the recommended PSI listed on the driver’s side door jamb, not just for optimal fuel efficiency, but also for vehicle safety and handling.

Avoid aggressive driving habits. The 2.7L turbo engine is responsive and encourages spirited driving, but hard acceleration and rapid braking dramatically reduce fuel economy. Smooth, gradual acceleration and anticipating traffic conditions will significantly improve your MPG.

Use cruise control on the highway. Maintaining a consistent speed on long drives minimizes fluctuations in fuel consumption. This is particularly effective in flatter terrains where the system doesn’t have to constantly adjust for inclines.

Minimize idling. Idling consumes fuel without any forward motion. If you anticipate being stationary for more than a minute or two, it’s more efficient to turn off the engine. This is especially relevant in urban environments with frequent stoplights.

Consider the fuel grade recommended by Cadillac. Some vehicles can operate on regular unleaded fuel, premium fuel might be recommended for optimal performance and efficiency with the 2.7L turbo. Consult your owner’s manual for the precise recommendation, and factor the cost of premium fuel into your overall fuel expense.