29 MPG combined isn’t going to set any green records, but it’s the compromise buyers of the 2018 Mercedes-Benz CLA250 accept. This isn’t a car purchased primarily for squeezing every last mile out of a gallon. Instead, it’s a gateway into the Mercedes-Benz brand, offering a taste of luxury and performance within a (relatively) attainable price point. The target buyer is style-conscious and values the prestige of the Mercedes-Benz star and accepts slightly average fuel economy.

City and highway performance

The EPA estimates the CLA250 achieves 24 MPG in the city and 37 MPG on the highway. That city figure reflects the stop-and-go driving, where the 2.0L turbocharged four-cylinder works harder. The automatic (AM7) transmission, while smooth and responsive, isn’t geared for ultimate fuel efficiency at lower speeds.

On the open road, however, the CLA250 settles into a more efficient rhythm. The engine cruises comfortably, and the aerodynamics contribute to the relatively high highway MPG. Regular use of cruise control on longer trips delivers numbers consistent with the EPA’s estimate.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2018 Mercedes-Benz CLA250 at $2,000. This is based on driving 15,000 miles per year, with a mix of city and highway driving, and using national average fuel prices. This cost represents a significant expense for many drivers, and potential CLA250 buyers should consider it. While it’s not exorbitant compared to larger SUVs or performance cars, it’s higher than more fuel-conscious compact sedans.

Factors such as driving style, local fuel prices, and mileage can all influence the real-world fuel cost.

Real-world expectations

The EPA provides a standardized benchmark, but your personal fuel economy with the CLA250 will vary. Expect to see figures close to the EPA estimates if you drive conservatively and prioritize fuel efficiency. However, if you frequently engage in spirited driving, accelerate aggressively, or spend time in heavy traffic, your MPG will likely fall below the official numbers. Owners who primarily drive in the city should anticipate their average MPG hovering closer to the low-to-mid 20s, while those with predominantly highway commutes might see averages in the low 30s. The premium fuel recommended for the CLA250 adds to the cost of ownership.

How it compares

Compared to its competitors, the 2018 CLA250’s fuel economy lands in the middle of the pack. A 2018 Audi A3 2.0T Quattro achieves a slightly lower combined MPG of 28, primarily due to the added weight and complexity of all-wheel drive. The BMW 2 Series sees similar numbers. A 2018 BMW 230i earns a combined 28 MPG. A Lexus IS 300 sedan earns slightly lower estimates as well, with combined ratings of 24 MPG. The Acura ILX from the same year beats the Mercedes, offering combined ratings of 28-29 MPG due to its less powerful engine. It’s important to consider what that difference in price and performance actually equates to for your situation. Potential shoppers can view CLA250 MPG across all years here.

Tips to maximize efficiency

The CLA250’s turbocharged engine is responsive, but also sensitive to aggressive throttle inputs. Avoiding hard acceleration and maintaining a smooth, steady pace will improve fuel economy, particularly in city driving. Try to anticipate traffic flow and avoid unnecessary braking, further reducing fuel consumption.

Ensure your tires are properly inflated. Underinflated tires increase rolling resistance, forcing the engine to work harder and reducing fuel efficiency. Check your tire pressure regularly and inflate them to the recommended levels, typically found on a sticker inside the driver’s side doorjamb. Small change, big impact.

Minimize idling. Idling consumes fuel without covering any distance. If you’re stopped for more than a minute, it’s more efficient to turn off the engine and restart it. This is true in modern cars with efficient starters.

Reduce weight. Carrying extra cargo in your trunk or on the roof rack adds weight, which reduces fuel efficiency. Remove any unnecessary items from your car and avoid using a roof rack unless necessary.

Schedule regular maintenance. A well-maintained engine operates more efficiently. Follow the manufacturer’s recommended maintenance schedule, including regular oil changes, air filter replacements, and spark plug inspections. You can find all Mercedes Benz fuel economy data here.