The 2024 GMC Terrain AWD with its 1.5L 4-cylinder engine achieves a combined fuel economy of 25 MPG. Terrain buyers prioritize practicality, space, and GM’s rugged aesthetic appeal over segment-leading fuel efficiency. This isn’t a vehicle engineered for hypermiling, it’s designed to haul families and their gear comfortably and reliably in all weather conditions.

City and highway performance

The EPA estimates place the Terrain’s fuel economy at 23 MPG in the city and 28 MPG on the highway. These numbers reflect the engine’s characteristics and the nine-speed automatic transmission’s programming. The lower city MPG reflects the demands of stop and go traffic, where the small-displacement, turbocharged engine works harder to get the Terrain moving. On the open road, at consistent speeds, the Terrain benefits from taller gearing and reduced engine load, allowing it to approach the 28 MPG highway figure without much effort. The nine-speed automatic is key here, keeping the engine in its sweet spot for both power and efficiency. The turbocharged engine makes its peak torque at relatively low RPMs, and the transmission uses this to good effect.

Annual fuel cost

According to the EPA, the estimated annual fuel cost for the 2024 GMC Terrain AWD is $1,750. This calculation is based on driving 15,000 miles per year and using the national average fuel price at the time of calculation. It’s a helpful benchmark for comparing the Terrain’s running costs against other vehicles, but remember your individual driving habits and local fuel prices will influence your actual expenses. While $1,750 might seem high to some, consider the size and capabilities of the Terrain, along with current fuel prices versus historical prices. Terrain owners understand that capability comes at a slight cost.

Real-world expectations

While the EPA estimates provide a useful baseline, real-world fuel economy can vary depending on driving style, road conditions, and even weather. Aggressive acceleration, frequent hard braking, and carrying heavy loads will all negatively impact fuel efficiency. Similarly, driving in hilly terrain or strong headwinds will reduce MPG. Owners reporting their own fuel economy typically find that achieving the EPA combined estimate is realistic with mindful driving. Many see numbers close to the highway rating on longer trips. Understanding these variables is crucial for setting realistic expectations and managing your fuel budget.

How it compares

The Terrain’s fuel economy positions it competitively within its class. The Toyota RAV4 AWD, for instance, achieves 30 MPG combined, a clear advantage over the Terrain. However, certain RAV4 trim levels, especially those with larger engines or more aggressive tires, will see their fuel ecnomy reduced. The Honda CR-V AWD manages 29 MPG combined, another strong contender. The Mazda CX-5 AWD, known for its sporty driving dynamics, delivers 26 MPG combined, putting it very close to the Terrain. While the RAV4 and CR-V offer superior efficiency, the Terrain counters with its distinctive styling and GM’s specific interpretation of a reliable, capable crossover. For buyers who value these aspects, the slightly lower fuel economy is an acceptable trade-off.

Tips to maximize efficiency

Avoid aggressive acceleration and hard braking. The Terrain’s turbocharged engine responds well to smooth, gradual throttle inputs. Practice anticipation and maintain a consistent speed to minimize fuel consumption. Keeping your tires properly inflated is another easy way to boost fuel economy. Check your tire pressure regularly and inflate them to the recommended level, which can be found on a sticker inside the driver’s side doorjamb.

Reduce aerodynamic drag by removing unnecessary items from the roof rack. Even an empty roof rack creates wind resistance that lowers fuel economy, especially at highway speeds. Consider removing it when not in use, or invest in a more aerodynamic carrier if you frequently transport cargo on the roof.

Use cruise control on the highway to maintain a consistent speed and optimize fuel efficiency. Cruise control helps eliminate speed fluctuations that can waste fuel. However, be mindful of using cruise control in hilly terrain, as the transmission may downshift frequently, negating some of the benefits.

Consider using a fuel additive designed to clean fuel injectors and improve combustion. Over time, deposits can build up in the fuel system, reducing engine efficiency. A quality fuel additive can help restore lost performance and fuel economy. Check your owner’s manual for recommended additives and usage instructions.

Before buying, do some reading. You can find all Gmc fuel economy data on this site, including details on the TERRAIN MPG across all years, to see how the Terrain’s numbers stack up against competing models.