25 MPG combined isn’t going to win any fuel economy awards, but for a compact luxury sport sedan like the 2018 Cadillac ATS with the 2.0L turbocharged four-cylinder, it’s a reasonable compromise. The ATS targets drivers who prioritize sharp handling and a responsive engine over ultimate efficiency. While not the most economical choice in its class, it delivers enough MPG to satisfy those who want a touch of luxury and sportiness without completely breaking the bank.

City and highway performance

The EPA estimates for the 2018 Cadillac ATS 2.0L are 22 MPG in the city and 31 MPG on the highway. These numbers reflect the characteristics of the engine and the eight-speed automatic transmission. The city figure is relatively low for a four-cylinder; this is attributable to the car’s weight and the engine tuning, which favors responsive low-end torque rather than maximum efficiency. The 31 MPG highway figure is respectable, suggesting that the ATS can be a decent long-distance cruiser, especially when equipped with cruise control and driven at a steady speed. The eight-speed automatic helps optimize fuel economy at higher speeds.

Annual fuel cost

According to the EPA, the estimated annual fuel cost for the 2018 Cadillac ATS 2.0L is $2,300. This figure is based on driving 15,000 miles per year and using national average fuel prices. Your actual fuel costs will vary depending on your driving habits, the type of fuel you use, and local fuel prices. If you drive significantly more or less than 15,000 miles annually, or if fuel prices in your area are substantially higher or lower than the national average, your actual expenses will be different. $2,300 serves as a useful benchmark for comparing the ATS to other vehicles.

Real-world expectations

While the EPA provides a standardized estimate, real-world MPG often differs based on individual driving styles and conditions. Aggressive acceleration, frequent braking, and stop-and-go traffic will all lower the fuel economy of the ATS. Consistently exceeding posted speed limits on the highway will negatively impact MPG. Owners who prioritize smooth acceleration, anticipate traffic flow, and maintain consistent speeds are more likely to achieve numbers closer to the EPA estimates. Colder weather can also reduce fuel economy, as can extensive use of the air conditioning system.

How it compares

In the competitive compact luxury sedan segment, the 2018 Cadillac ATS 2.0L stacks up in the middle of the pack in terms of fuel economy. For instance, the BMW 320i with its 2.0L turbo boasts a slightly better 24 MPG city and 35 MPG highway. The Acura ILX, with its smaller engine and front-wheel drive configuration, achieves roughly 24 MPG city and 34 MPG highway. Other options, like the Audi A4 2.0T, sit close to the ATS in terms of MPG. The ATS is not for the hypermiler, but it delivers fuel economy that’s comparable to its main competitors. For all Cadillac fuel economy data, browse the rest of this site; those seeking data on ATS MPG across all years should look here specifically.

Tips to maximize efficiency

Avoid aggressive acceleration and hard braking. The 2.0L turbo in the ATS responds well to a gentle foot, and by accelerating smoothly, you can conserve fuel and enjoy a more relaxed driving experience. Anticipate traffic flow and maintain a consistent speed whenever possible. Keeping the engine in its optimal RPM range will improve MPG.

Ensure your tires are properly inflated. Underinflated tires increase rolling resistance, which can significantly decrease fuel economy. Check your tire pressures regularly and inflate them to the recommended levels listed on the sticker inside the driver’s side door.

Minimize idling. If you’re stopped for more than a minute, it’s generally more fuel-efficient to turn off the engine and restart it when you’re ready to go. This is particularly true in stop-and-go city driving. The ATS restarts quickly and smoothly, so there’s no major inconvenience.

Use cruise control on the highway. Cruise control helps maintain a consistent speed, which can improve fuel economy on long trips. Be mindful of terrain changes, as cruise control can sometimes overcompensate on hills, leading to inefficient fuel consumption.

Consider using a fuel additive specific to turbocharged engines. Some owners report improved fuel economy and engine performance with regular use. Research reputable brands and follow the manufacturer’s instructions carefully. These additives can help keep fuel injectors clean and optimize combustion.