The 2015 GMC Terrain AWD 2.4L 4-cylinder gets 23 MPG combined, which balances SUV practicality with acceptable fuel consumption. Buyers of this configuration likely understand this going in. They aren’t chasing Prius-level efficiency; they need a small SUV’s utility, all-wheel drive’s security, and the Terrain’s generally comfortable ride, especially on longer highway trips.

City and highway performance

The EPA estimates of 20 MPG in the city and 28 MPG on the highway show the 2015 Terrain’s strengths and weaknesses. Stop-and-go city driving is where the 2.4L engine works harder, constantly accelerating its nearly 4,000-pound curb weight. The six-speed automatic transmission, while generally smooth, can sometimes hunt for the right gear in these conditions, further impacting fuel economy. On the open highway, however, the Terrain settles into a more efficient stride.

The engine isn’t working as hard, and the aerodynamics, while not groundbreaking, allow for relatively relaxed cruising that approaches the EPA’s 28 MPG figure. Sometimes careful driving even exceeds it.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2015 GMC Terrain AWD 2.4L at $1,900. This figure uses driving 15,000 miles per year and national average fuel prices. This is a critical benchmark because it allows potential buyers to factor in the vehicle’s initial purchase price and anticipated cost of ownership. Fluctuating gas prices will directly impact this annual cost, and your individual driving habits can either increase or decrease it.

Real-world expectations

EPA estimates provide a useful baseline, but real-world fuel economy can vary considerably. Drivers who frequently engage the all-wheel-drive system in snow or other adverse conditions will likely see a dip in fuel economy. Aggressive driving habits, such as rapid acceleration and hard braking, will also negatively impact mpg.

Conversely, drivers who prioritize smooth acceleration, maintain consistent speeds, and minimize idling can often achieve figures that are closer to, or even slightly better than, the EPA estimates. It’s crucial to consider your personal driving style and typical usage patterns when estimating your own fuel costs.

How it compares

The 2015 Terrain’s fuel economy places it in the middle of the pack compared to its competitors. The front-wheel-drive Honda CR-V, for example, achieves 26 MPG combined, a noticeable improvement. The Toyota RAV4 with front-wheel drive boasts 25 MPG combined. These vehicles offer comparable interior space and utility, but they lack the all-wheel-drive system that attracts some buyers to the Terrain. Stepping up to the Terrain’s available V6 engine drops fuel economy significantly, often down to around 20 MPG combined, making the 2.4L the more sensible choice for those prioritizing fuel efficiency. For buyers considering other GM products, the 2015 Chevrolet Equinox, effectively a platform twin to the Terrain, offers nearly identical fuel economy.

It’s worth consulting all Gmc fuel economy data to see how the Terrain compares against other vehicles in the GMC lineup. The difference is critical for buyers debating between the added capability of AWD and the potential savings from using less gas. Be sure to check TERRAIN MPG across all years to compare the 2015 model with other model years.

Tips to maximize efficiency

Monitor your tire pressure regularly. Underinflated tires increase rolling resistance, forcing the engine to work harder and reducing fuel economy. The recommended tire pressure for the 2015 Terrain can be found on a sticker inside the driver’s side doorjamb.

Avoid unnecessary idling. Allowing the engine to idle for extended periods, especially in cold weather, consumes fuel without providing any benefit. If you anticipate a wait of more than a minute or two, it’s best to turn off the engine. Restarting it consumes far less fuel than prolonged idling.

Use cruise control on the highway whenever possible. Maintaining a consistent speed minimizes unnecessary acceleration and deceleration, which can significantly improve fuel economy. Cruise control helps to smooth out your driving and keep the engine operating in its most efficient range.

Consider upgrading to low rolling resistance tires when it’s time for a replacement. These tires are designed to reduce friction with the road surface, resulting in improved fuel economy. While the difference may be subtle, it can add up over time.

Lighten your load. Carrying unnecessary weight in your vehicle reduces fuel economy. Remove any items from the trunk or cargo area that you don’t need regularly. The less weight the engine has to move, the more efficiently it will operate.