25 MPG combined is respectable for the 2018 Cadillac CTS 2.0L 4-cyl, though fuel economy isn’t likely the main reason to choose this luxury sedan. Buyers in this segment prioritize style, technology, and a comfortable driving experience, and the CTS delivers. For those who appreciate a balance of luxury and reasonable fuel consumption, this CTS variant is a good option. It offers a distinctive American alternative to the ubiquitous German cars.

City and highway performance

The EPA estimates for the 2018 CTS 2.0L 4-cyl are 22 MPG in the city and 30 MPG on the highway. That city figure is adequate for stop-and-go commutes and urban driving. The 30 MPG highway rating reflects this engine’s ability to cruise efficiently, especially when paired with the smooth-shifting 8-speed automatic transmission. The turbocharged 2.0L engine delivers ample power for confident passing and merging, enhancing its suitability for longer journeys. It’s a combination that works as advertised.

Annual fuel cost

The EPA estimates an annual fuel cost of $2,300 for the 2018 Cadillac CTS 2.0L 4-cyl. This is based on driving 15,000 miles per year and using national average fuel prices. Your actual fuel expenses will vary depending on your driving habits, the type of driving you do, and fuel prices in your area.

Aggressive acceleration, frequent hard braking, and extended idling can all negatively impact your fuel economy and increase that annual cost. Practicing efficient driving techniques can help you get closer to, or even exceed, the EPA’s estimates, potentially lowering your fuel bill.

Real-world expectations

The EPA estimates provide a baseline, but owner forums and independent testing suggest that the real-world MPG of the 2018 Cadillac CTS 2.0L 4-cyl can vary. Drivers often report achieving figures close to the EPA’s estimates in mixed driving conditions.

Highway MPG is often achievable, especially on long trips where the car can maintain a consistent speed. City MPG can fluctuate more depending on traffic and driver behavior. Consistent efficient driving will help you get the best possible fuel economy.

How it compares

In the competitive mid-size luxury sedan segment, the 2018 Cadillac CTS 2.0L 4-cyl stacks up reasonably well in fuel economy, but doesn’t lead the pack. For instance, the BMW 330i from the same year achieves a combined 28 MPG with its 2.0L turbo, a slight advantage. Opting for the all-wheel-drive version reduces both vehicles’ ratings by a few MPG. The Lexus ES 350, delivers a combined 25 MPG, matching the CTS, though it isn’t directly comparable in driving dynamics. Review all Cadillac fuel economy data to see where the CTS lands within the broader Cadillac lineup. The CTS-V’s monstrous V8 lives on the other end of the spectrum. Before deciding, consider what’s most important: performance, fuel economy, or a balance of both. Exploring CTS MPG across all years can provide valuable insights.

Tips to maximize efficiency

The turbocharged engine in the 2018 CTS responds well to smooth acceleration. Avoid aggressive launching or rapidly increasing your speed, since this burns extra fuel. Treat the gas pedal gently to optimize efficiency.

The 8-speed automatic transmission shifts smoothly and keeps the engine in its most efficient operating range. Allow the transmission to do its job, and avoid manually shifting unless necessary. Resist shifting down for passing unless you need maximum power.

The CTS benefits from regular maintenance, including proper tire inflation and timely oil changes. Low tire pressure increases rolling resistance, reducing fuel economy. Using the correct oil and staying on top of scheduled maintenance ensures the engine runs efficiently. Check the tire pressure monthly, or before any long trip.

Minimize idling. Modern engines do not need long warm-up periods. If you anticipate being stopped for more than a minute, turn off the engine. Avoid carrying unnecessary weight in the vehicle, as it reduces fuel economy.

Planning your routes can also boost your MPG. Avoid peak traffic times and routes with excessive stop-and-go driving. Using navigation to find the most efficient path can help you save fuel, especially on longer trips.