23 MPG combined is an acceptable figure for the 2025 Cadillac CT4-V equipped with the High-Output 2.7L turbocharged four-cylinder. Few buyers are choosing this specific model for its fuel efficiency; they want its unique mix of performance, luxury, and compact size. This isn’t a commuter car; it’s a statement. It appeals to drivers who want Cadillac luxury with sharp handling and a potent engine, even if it means sacrificing some fuel savings.

City and highway performance

The EPA estimates the CT4-V 2.7L will achieve 20 MPG in the city and 29 MPG on the highway. The city figure reflects the stop-and-go driving common in urban environments, which penalizes turbocharged engines and heavier vehicles. The highway number, however, shows the engine’s efficiency at sustained speeds. While 29 MPG isn’t class-leading, it’s respectable and allows for decent range on road trips. With the 17.2-gallon fuel tank, expect about 450 miles of highway driving before needing to refuel, assuming you don’t push the engine too hard with aggressive driving.

Annual fuel cost

According to the EPA, the estimated annual fuel cost for the 2025 Cadillac CT4-V 2.7L is $2,500. This figure is based on driving 15,000 miles per year, with a mix of city and highway driving. It also uses the national average fuel price, which fluctuates regularly. Some drivers may see a significantly higher or lower figure depending on their driving habits, the type of fuel they buy, and local fuel costs. For drivers living in areas with higher fuel prices, or those who drive more aggressively, the annual fuel cost will exceed the EPA’s estimate. You can review all Cadillac fuel economy data to see how the CT4-V compares to other models.

Real-world expectations

The EPA estimates provide a baseline for comparing vehicles, but real-world fuel economy rarely matches them. The CT4-V’s turbocharger and responsive throttle encourage spirited driving, which will reduce fuel efficiency. Drivers who consistently drive in Sport mode or frequently accelerate hard should expect to see numbers closer to the city estimate, even on the highway. However, those who prioritize smooth acceleration and maintain consistent speeds can likely achieve or slightly exceed the EPA’s highway figure. The CT4-V’s performance focus means most owners will accept its fuel consumption relative to its capabilities.

How it compares

Competitors like the BMW M340i, which gets around 26 MPG combined, offer a slight advantage in fuel economy, but cost more and have a different style than the CT4-V. The Lexus IS 350, with its naturally aspirated V6 engine, delivers around 23 MPG combined, the same as the CT4-V. However, it lacks the turbocharger’s immediate torque. While the Mercedes-Benz C300 achieves a combined 28 MPG, it doesn’t offer the same level of driver engagement. The CT4-V buyer may trade a few MPG for the Cadillac’s sharp handling and distinctive design. If you’re focused on overall cost, check CT4 MPG across all years and the current incentives.

Tips to maximize efficiency

Avoid aggressive acceleration. The CT4-V’s turbocharger delivers strong performance, but hard acceleration uses a lot of fuel. Practice smooth acceleration to minimize fuel consumption, especially in city driving.

Maintain proper tire inflation. Underinflated tires increase rolling resistance, which affects fuel economy. Check your tire pressure regularly and ensure it matches the manufacturer’s recommended settings, usually found on a sticker inside the driver’s side doorjamb.

Use cruise control on the highway. Cruise control helps maintain a consistent speed, which can improve fuel economy on long highway drives. Disengage cruise control in heavy traffic or hilly terrain, where it may lead to unnecessary acceleration and deceleration.

Minimize idling time. Letting the engine idle wastes fuel. If you’re stopped for more than a minute or two, it’s more efficient to turn off the engine and restart it when you’re ready to go. Modern engines are designed to restart quickly.

Consider using a fuel additive to clean fuel injectors and improve combustion. Over time, deposits can build up in fuel injectors, reducing their efficiency. A fuel additive can remove deposits and restore optimal fuel delivery, improving fuel economy.