21 MPG combined isn’t going to win any hypermiling awards, but for the 2024 Cadillac CT5 AWD with the 3.0L twin-turbo V6, it represents a compromise many buyers are willing to make. This CT5 isn’t about squeezing every last drop of fuel; it’s about delivering performance, luxury, and all-weather confidence. Customers who choose this configuration prioritize a quick, responsive drivetrain and the added security of all-wheel drive, accepting the fuel consumption as part of the deal. They want a comfortable and capable daily driver that provides ample passing power on the highway, and they understand this comes at a cost.

City and highway performance

The EPA estimates for the CT5 AWD 3.0L are 18 MPG in the city and 26 MPG on the highway. The city figure reflects the engine’s tendency to use more fuel in stop-and-go traffic, where the turbochargers are constantly spooling up and down, and the automatic transmission works harder to manage gear changes. The highway MPG is more respectable, showing the engine’s efficiency when cruising at a steady speed. Aggressive acceleration or frequent passing maneuvers will quickly erode that 26 MPG figure.

Drivers with longer commutes primarily on the highway will see numbers closer to the EPA highway number, while those spending most of their time in urban environments should expect lower fuel economy.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2024 Cadillac CT5 AWD 3.0L is $2,750. This is based on driving 15,000 miles per year and using the national average fuel price at the time of calculation. Your actual fuel costs will vary depending on your driving habits, the type of driving you do, and the price of gasoline in your area. Drivers who frequently accelerate hard or spend a lot of time idling will likely exceed the EPA’s estimate, while more conservative drivers may achieve slightly better fuel economy and reduce their annual spending.

Remember to consult all Cadillac fuel economy data to help with your buying decision.

Real-world expectations

The EPA provides a standardized measurement, but real-world fuel economy often differs. Factors like driving style, road conditions, and even tire pressure can impact fuel consumption. It’s not uncommon for drivers to see numbers slightly above or below the EPA estimates, depending on their circumstances.

The CT5’s turbocharged engine is more sensitive to driving habits than a naturally aspirated engine. Aggressive driving will disproportionately impact fuel economy compared to more relaxed driving styles. Using premium fuel, as recommended by Cadillac for optimal performance, will further increase the cost of ownership.

How it compares

The Cadillac CT5 AWD 3.0L competes with other luxury sedans offering similar performance and all-wheel drive. For example, the BMW 330i xDrive, while not directly comparable in terms of power output, achieves an EPA-estimated 28 MPG combined. The Audi A4 allroad offers an EPA-estimated 24 MPG combined, presenting a more efficient alternative for those prioritizing fuel economy over outright performance.

Exploring CT5 MPG across all years may turn up alternatives to this exact configuration, even within the Cadillac lineup. The Mercedes-Benz C300 4MATIC, another key competitor, achieves around 26 MPG combined. Examining these alternatives is crucial for potential buyers to determine whether the CT5’s performance justifies its fuel consumption compared to its rivals. The Acura TLX Type S, a performance-oriented sedan with SH-AWD, comes in around 21MPG combined also.

Cadillac offers similar fuel economy to its competitors while focusing on a unique blend of American luxury and agile performance.

Tips to maximize efficiency

One way to improve fuel economy in the Cadillac CT5 AWD is to adopt a smoother driving style. Avoid aggressive acceleration and hard braking, as these actions consume more fuel. Anticipate traffic flow and maintain a steady speed whenever possible, allowing the turbochargers to work more efficiently.

Regular maintenance is critical for optimal fuel economy. Ensure that your tires are properly inflated, as underinflated tires increase rolling resistance and reduce efficiency. Follow the manufacturer’s recommended maintenance schedule, including oil changes and air filter replacements, to keep the engine running smoothly.

Limit the use of features that consume extra energy, such as climate control. While air conditioning is essential in hot weather, using it sparingly can help conserve fuel. Opening windows or using the ventilation system when appropriate can reduce the load on the engine.

If available, use eco-driving mode to alter shift points and throttle response for maximum MPG. While it may dull the immediate performance this car is known for, you can achieve significant gas savings on long trips.

Minimize idling time. If you anticipate being stopped for more than a minute or two, turn off the engine. Modern engines are designed to restart quickly and efficiently, and prolonged idling wastes fuel unnecessarily. This is particularly important with a turbocharged engine, as idling allows the turbochargers to cool down, but also continues to consume fuel.