26 MPG combined isn’t going to set any records, but for the 2020 GMC Terrain AWD with the 1.5L four-cylinder, it’s a reasonable compromise between capability, comfort, and efficiency. This isn’t a vehicle for people focused only on minimizing fuel costs. Instead, it’s for individuals and small families who need all-wheel drive for bad weather, appreciate the elevated driving position, and want some Denali-inspired styling without spending too much. They’re willing to trade some fuel efficiency for the peace of mind and practicality the Terrain offers.

City and highway performance

The EPA estimates for the 2020 GMC Terrain AWD 1.5L are 25 MPG in the city and 28 MPG on the highway. This suggests the Terrain performs consistently across different driving environments, which benefits those with mixed commutes. The nine-speed automatic transmission helps by allowing the engine to stay in its most efficient range at various speeds. The highway number isn’t much higher than the city figure, but it’s still a good gain for longer trips, especially when using cruise control to maintain speed and reduce acceleration.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2020 GMC Terrain AWD 1.5L at $1,700. This is based on driving 15,000 miles per year and national average fuel prices. Of course, your fuel expenses will depend on your driving habits, the fuel you buy, and gas prices where you live. However, the $1,700 figure is a good benchmark for comparing the Terrain’s costs to other vehicles in its class. This assumes you buy regular unleaded gasoline, since the 1.5L engine doesn’t need premium fuel.

Real-world expectations

EPA estimates are a standard, but real-world fuel economy often differs because of driving style, traffic, and terrain. Owners of the 2020 Terrain AWD 1.5L can expect to see numbers close to the EPA’s estimates under normal driving. Aggressive acceleration, stop-and-go traffic, and high speeds will reduce fuel economy. A smoother driving style, less idling, and more highway driving can help you match or exceed the EPA’s numbers. Regular maintenance, like proper tire inflation and oil changes, also helps.

How it compares

In the compact SUV segment, the 2020 GMC Terrain AWD’s fuel economy is in the middle. For example, the Toyota RAV4 AWD gets a higher EPA combined rating of 30 MPG with its standard gasoline engine, which is a big advantage if you want to save fuel. The Jeep Compass 4×4 has similar off-road capability but typically gets a lower combined MPG, closer to 24. The Chevrolet Equinox AWD, also from GM and using the same 1.5L engine, generally matches the Terrain’s MPG. This shows the Terrain is trading maximum efficiency for a more premium feel and styling that its buyers want. Viewing all Gmc fuel economy data side-by-side helps you understand the brand positioning. The Terrain buyer accepts this balance.

Tips to maximize efficiency

Gentle acceleration and braking can improve your Terrain’s fuel economy a lot. The 1.5L engine works well with a light touch, so avoid sudden bursts of speed. Predict traffic and keep a steady pace to reduce fuel use.

Proper tire inflation is important for fuel efficiency. Check your tires often and inflate them to the recommended pressure on the driver’s side doorjamb. Underinflated tires increase rolling resistance, which reduces MPG and can cause wear. This is one of the easiest things owners can do to affect the TERRAIN MPG across all years.

Reduce idling time, especially when it’s cold. Modern engines warm up fast, so long idling isn’t needed and wastes fuel. If you’ll be stopped for more than a minute or two, turn off the engine to save fuel.

If you can, use cruise control on highway drives. Cruise control helps keep a consistent speed, which prevents unnecessary acceleration and deceleration, which can hurt fuel economy. Remember to turn it off in bad weather or heavy traffic.

Remove extra weight from your vehicle. Extra cargo strains the engine and lowers fuel efficiency. Remove any items you don’t need from your Terrain to improve MPG, even if it’s a small amount.