24 MPG combined isn’t a stellar number for a compact crossover, but it’s understandable for the 2018 GMC Terrain FWD with the optional 2.0L turbocharged four-cylinder engine. The Terrain, especially in Denali trim, aims for a more premium feel than some of its competitors. It’s designed for buyers who want a touch of luxury and capability without the bulk of a larger SUV, and who are willing to accept slightly less-than-class-leading fuel economy to get it.

City and highway performance

The EPA estimates of 22 MPG in the city and 28 MPG on the highway accurately reflect the Terrain’s performance in different driving conditions. The city rating will likely be the most relevant to Terrain owners, as many use these vehicles for daily commutes and errands. The highway figure, while acceptable, isn’t a standout in the segment. The nine-speed automatic transmission helps optimize fuel economy at higher speeds, but the Terrain’s weight and relatively powerful engine affect fuel consumption.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2018 GMC Terrain FWD 2.0L at $2,400. This figure is based on driving 15,000 miles per year and using national average fuel prices. It provides a benchmark for buyers to compare the Terrain’s running costs to other vehicles they might be considering. Naturally, your actual fuel cost will vary depending on how and where you drive, and fluctuating gas prices. Aggressive driving, stop-and-go traffic, and prolonged idling will increase your annual fuel expenditure.

Real-world expectations

While the EPA estimates provide a useful baseline, real-world MPG can differ. Owners should expect to see figures that fluctuate slightly above or below the official numbers depending on driving habits and conditions. Consistently driving at higher speeds or frequently accelerating hard will reduce fuel economy. Conversely, careful driving with gentle acceleration and consistent speeds can improve MPG.

Factors like tire pressure, vehicle maintenance, and even the amount of cargo you’re carrying can also impact fuel efficiency. Some drivers have reported achieving slightly better highway mileage than the EPA estimate, particularly on long road trips with minimal stop-and-go traffic.

How it compares

The 2018 GMC Terrain’s fuel economy is competitive in the compact SUV segment, but other options often deliver better numbers. For example, the Honda CR-V FWD with the 1.5L turbo boasts 28 MPG combined and 34 MPG on the highway, making it a more efficient choice. The Toyota RAV4 Hybrid offers significantly better fuel economy, with an EPA rating of 34 MPG combined. Even the Mazda CX-5, known for its engaging driving dynamics, manages 25 MPG combined in its front-wheel-drive configuration. The Terrain’s appeal lies in its upscale styling, available features, and the GMC brand. Buyers who prioritize fuel economy may be better served by exploring other options. Readers interested in more information should check out all Gmc fuel economy data.

Tips to maximize efficiency

Given the Terrain’s turbocharged engine, avoid excessive idling. Modern engines warm up quickly, and prolonged idling consumes fuel. If you anticipate stopping for more than a minute, turn off the engine, especially during colder months.

The Terrain’s nine-speed automatic transmission is designed to optimize fuel economy. Use cruise control on the highway to maintain a consistent speed and prevent unnecessary acceleration and deceleration. This will help the transmission select the most efficient gear and minimize fuel consumption.

Ensure your tires are properly inflated to the recommended pressure. Under-inflated tires increase rolling resistance, which reduces fuel economy. Check your tire pressure regularly, especially before long trips, and adjust as needed.

Avoid carrying unnecessary weight in your Terrain. Extra cargo adds to the vehicle’s overall weight, which negatively impacts fuel efficiency. Remove any items you don’t need, particularly heavy objects, to improve gas mileage and compare TERRAIN MPG across all years.

Drive smoothly and avoid aggressive acceleration and braking. The 2.0L turbo provides ample power, but using it excessively will significantly reduce fuel economy. Anticipate traffic flow and accelerate and decelerate gently to maintain a consistent speed.