The 2023 Cadillac CT4 with the 2.7L turbocharged four-cylinder achieves 25 MPG combined. This isn’t hybrid-level efficiency, but it’s notable for a compact luxury sedan designed for strong acceleration and a sporty feel. The CT4 with the high-output 2.7L aims for buyers who want a more engaging entry-level luxury car, even if it means only ‘okay’ fuel economy.

City and highway performance

EPA estimates for this CT4 configuration are 21 MPG in the city and 31 MPG on the highway. The city figure is realistic in stop-and-go traffic, but aggressive acceleration will decrease it. The 31 MPG highway rating is accurate at a steady cruising speed. The 10-speed automatic transmission helps keep the engine in its best rev range, which helps both performance and efficiency. However, pushing the car hard to use its performance, such as when passing, will reduce average MPG toward the low 20s. This engine encourages assertive driving, and fuel consumption will show it.

Annual Fuel Cost

The EPA estimates the annual fuel cost for the 2023 Cadillac CT4 2.7L at $2,300. This is based on driving 15,000 miles per year, using national average fuel prices. Gas price changes will affect this number. Driving fewer miles will lower it, while longer commutes will increase it. Also, if you consistently use premium fuel (as recommended for best performance), your fuel costs could be higher.

Real-World Expectations

The EPA numbers are a guideline. Actual fuel economy depends on driving habits, traffic, and terrain. Drivers who accelerate quickly and drive mostly in the city will likely see MPG closer to the low end of the EPA range. Those who drive mostly on the highway and drive conservatively could exceed the 31 MPG highway estimate. Some owners find the EPA numbers optimistic, struggling to exceed 23 MPG in mixed driving. Others consistently exceed the combined 25 MPG rating by driving carefully.

How it compares

The CT4 with the 2.7L engine occupies a specific niche compared to its competitors. The BMW 330i, a direct competitor with its turbocharged 2.0-liter engine, gets a combined 28 MPG. That is better than the CT4. The Mercedes-Benz C300, also with a 2.0-liter turbo, gets 28 MPG combined too. Again, better than the Cadillac. The Acura Integra, technically a hatchback and appealing to similar buyers, achieves an impressive 33 MPG average. Cadillac buyers aren’t cross-shopping with a Prius. They’re accepting less gas for the uniquely strong experience of that 2.7-liter. To make an informed decision, potential CT4 owners must recognize that competitors offer better fuel efficiency. See all Cadillac fuel economy data for a broader perspective. The most current CT4 MPG across all years gives even greater detail.

Tips to Maximize Efficiency

Avoid aggressive acceleration and hard braking. The 2.7L engine is responsive but uses more fuel when pushed hard. Accelerating gently and anticipating traffic will help control fuel consumption. Maintain your vehicle well. Regular oil changes, tire inflation, and air filter replacements help engine performance and fuel efficiency.

Minimize idling. Idling wastes fuel, such as when waiting in traffic or warming up the engine. Modern engines warm up quickly while driving, so avoid long idling periods. Short trips with a cold engine are inefficient. Combine errands to reduce cold starts, allowing the engine to reach its best operating temperature faster.

Use cruise control on the highway. Cruise control keeps a consistent speed, improving fuel economy on long trips. Watch out for hills, as maintaining speed uphill can cancel out any fuel savings. And, while tempting, avoid using Sport mode on the street.

Remove unnecessary weight from the vehicle. Extra weight lowers fuel efficiency. Remove unnecessary items from the trunk and passenger compartment to reduce the load.