The 2020 GMC Terrain AWD with the 2.0L turbocharged engine gets 23 MPG combined. This isn’t going to win any awards for less gas, but it’s a perfectly acceptable figure for this compact SUV, which is a stylish and comfortable commuter with added all-weather capability. This isn’t a hybrid aiming for maximum efficiency, it’s a practical choice for suburban families and empty-nesters who prioritize a smooth ride, user-friendly tech, and a touch of upscale flair over outright fuel savings.

City and highway performance

The EPA estimates for the 2020 GMC Terrain AWD 2.0L are 21 MPG in the city and 26 MPG on the highway. The city figure reflects stop-and-go traffic and frequent acceleration, where the 2.0L turbo needs to work harder. The 26 MPG highway rating is more attainable on longer road trips where the efficient 9-speed automatic transmission can settle into a higher gear and let the engine lope along more easily. Drivers who frequently commute in urban environments will likely see their average MPG skew closer to that 21 MPG mark, while those who spend more time on the open road can expect figures nearer to the 26 MPG target, or possibly a tad higher if they drive conservatively. These are EPA estimates, and individual driving habits have a significant impact on final mileage.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2020 GMC Terrain AWD 2.0L at exactly $2,500. This figure is based on driving 15,000 miles per year, using national average fuel prices at the time of calculation. Rising fuel costs in recent years mean that your actual annual spending could be higher. It’s a standardized way for buyers to compare the theoretical running costs of different vehicles, but personal variables like local fuel prices, driving style, and the amount of miles driven each year will significantly influence your real-world fuel expenses. Knowing all GMC fuel economy data is advisable before committing to a purchase.

Real-world expectations

While the EPA estimates provide a useful benchmark, understanding real-world expectations is critical. Terrain owners often report fuel economy figures that are slightly lower than the EPA’s 23 MPG combined rating, particularly in areas with heavy traffic or hilly terrain. Aggressive acceleration and frequent short trips can also negatively impact fuel efficiency. However, drivers who are mindful of their driving habits and primarily use the Terrain for highway commuting can often achieve results that are closer to the EPA’s estimates, or even exceed them by a small margin. Online forums and owner reviews can provide valuable insights into the fuel economy experiences of other Terrain drivers.

How it compares

In the crowded compact SUV segment, the 2020 GMC Terrain’s fuel economy positions it somewhere in the middle of the pack. The Toyota RAV4, for example, particularly in its hybrid configurations, offers significantly better fuel economy, achieving upwards of 40 MPG combined. The Honda CR-V, another popular choice, also typically outperforms the Terrain, with ratings around 28 MPG combined for its non-hybrid models. On the other hand, some competitors with more powerful engines, like the Ford Escape with the 2.0L EcoBoost engine, post similar or slightly lower MPG figures to the Terrain. The Jeep Cherokee, particularly in its V6 configuration, often lags behind in fuel economy compared to the Terrain’s 23 MPG. For the Terrain buyer, absolute best-in-class fuel economy is less of a priority than a balanced package of style, features, and capability. They’re willing to accept a slightly lower MPG figure for the Terrain’s more upscale interior and Denali trim option.

Tips to maximize efficiency

Use cruise control whenever possible, especially on the highway. Maintaining a consistent speed minimizes unnecessary acceleration and deceleration, which can significantly improve fuel efficiency. The Terrain’s 9-speed automatic transmission is designed to keep the engine in its most efficient range at higher speeds, so let it do its job by avoiding sudden bursts of acceleration.

Ensure your tires are properly inflated to the recommended pressure. Underinflated tires create more rolling resistance, which can lead to a decrease in fuel economy. Check your tire pressure regularly, especially during seasonal temperature changes, as tire pressure can fluctuate with the weather. Also, consider the impact of various TIRE MPG figures across all years.

Avoid carrying unnecessary weight in your Terrain. Extra cargo adds to the vehicle’s overall weight, requiring the engine to work harder and consume more fuel. Remove any items from the trunk or rear seats that you don’t need on a regular basis. Even small amounts of weight can accumulate and impact fuel efficiency over time.

Be mindful of your driving style. Aggressive acceleration and hard braking consume more fuel than smooth, gradual inputs. Anticipate traffic flow and maintain a safe following distance to avoid unnecessary stops and starts. Adopt a more relaxed driving style to maximize your fuel economy.

Use the Terrain’s available driver-selectable mode for improved fuel efficiency when possible. Some models may offer a specific “Eco” mode that optimizes engine and transmission settings for maximum fuel savings. While it might slightly reduce performance, it can make a noticeable difference in your overall MPG, especially during city driving.