23 MPG combined isn’t going to win the 2022 Mercedes-Benz AMG CLA45 any awards for lower fuel costs, but that’s not the point. This car isn’t about saving the planet; it’s about raw, unadulterated performance in a compact, stylish package. This is a car for the enthusiast who wants supercar-esque acceleration and handling in a daily-drivable (albeit firm) machine, and they’re willing to pay a premium at the pump for that privilege. Fuel economy is a secondary consideration, at best, behind the intoxicating rush of its hand-built engine.

City and highway performance

The AMG CLA45 posts official EPA numbers of 20 MPG in the city and 28 MPG on the highway. The city figure reflects the reality of stop-and-go traffic, where the potent 2.0L engine spends more time idling or accelerating from a standstill. The highway figure is more reasonable and achievable if driven moderately. However, with the allure of 382 horsepower and a hair-trigger throttle response, resisting the urge to pass slower traffic aggressively is a constant challenge. That highway number will plummet the moment you start exploring the upper reaches of the tachometer.

Annual fuel cost

The EPA estimates that the annual fuel cost for the 2022 Mercedes-Benz AMG CLA45 will be exactly $2,500. This figure is based on driving 15,000 miles per year, with 45% of those miles driven in the city and 55% on the highway. It also assumes that you will be using premium fuel, which is virtually mandatory for achieving optimal performance and longevity in this high-strung engine. The estimate uses a national average fuel price, so your actual expenses may vary slightly depending on where you live and current gasoline prices.

Real-world expectations

While the EPA numbers provide a baseline, real-world fuel economy for the AMG CLA45 can vary significantly depending on driving style and conditions. Drivers who frequently exploit the car’s performance capabilities will likely see figures closer to 18-20 MPG combined. More conservative drivers who prioritize fuel efficiency might be able to approach the EPA’s 23 MPG combined figure, but that requires a level of restraint that’s tough to muster behind the wheel of this machine. Expect to visit the gas station more frequently if you regularly engage launch control or participate in spirited driving events.

How it compares

Compared to its rivals, the AMG CLA45’s fuel economy falls squarely in the middle of the pack. The Audi RS 3, another high-performance compact sedan, achieves a similar 23 MPG combined, with 20 MPG city and 29 MPG highway. The BMW M2 Competition, while arguably a different class of vehicle (a coupe rather than a sedan), offers slightly better fuel economy at 20 city / 26 highway / 22 combined MPG. Stepping down to the less powerful CLA35 nets you a slightly better 25 MPG combined. For those considering other Mercedes Benz options, explore all Mercedes Benz fuel economy data. Ultimately, the AMG CLA45’s buyer isn’t cross-shopping based on MPG numbers alone, but considering performance capability and luxury features. These numbers demonstrate AMG MPG across all years are not designed to be the standout criteria.

Tips to maximize efficiency

While the AMG CLA45 is not designed for hypermiling, there are a few techniques you can employ to improve its fuel economy. Avoiding unnecessary acceleration and braking is key. Anticipate traffic flow and maintain a steady pace whenever possible. The AMG CLA45 is equipped with an efficient automatic transmission, so you can leave most of the work to the car to maximize fuel milage.

Take advantage of the car’s ECO driving mode, if equipped. This mode optimizes engine and transmission settings for enhanced fuel efficiency, often sacrificing some performance. While it might not be ideal for spirited driving, it can be beneficial during routine commutes or long highway trips.

Ensure that your tires are properly inflated to the recommended pressure. Underinflated tires increase rolling resistance, which can negatively impact fuel economy. Check your tire pressure regularly, especially during temperature changes, as pressure can fluctuate.

Reduce the vehicle’s weight by removing unnecessary items from the trunk and cabin. Extra weight can increase fuel consumption, particularly during acceleration. Although it may seem minor, every little bit helps, especially in a car where the engine is already working hard for optimal performance.

Plan your routes strategically to avoid congested areas and minimize stop-and-go traffic. Using navigation apps that provide real-time traffic updates can help you find the most efficient routes and reduce fuel consumption.