GMC Terrain MPG, Fuel Efficiency, And Engine Options
SUV drivers who embrace adventure still want good fuel economy, and that makes the 2025 Terrain MPG extra appealing. If you're wondering how far a Terrain can go on a full tank, you can expect up to 400 miles1 of driving that's both nimble and rugged. That impressive range is thanks to a state-of-the-art 1.5-liter four-cylinder turbo engine that gives you great performance on the interstate and the ability to blaze a trail – especially if you look at the 2026 revival of the AT4 trim.
In our guide, we're focusing primarily on the 2025 Terrain, but our inventory has expanded to 2026, too. We've got the welcome return of the GMC Terrain AT4 and Denali. You're invited to explore both the 2025 and 2026 options at Jones Buick GMC Casa Grande today. Let's go over the impressive statistics of the Terrain model and what you can do in your next compact SUV.
Embrace the Road Ahead: 2025 GMC Terrain MPG
The GMC Terrain gas mileage varies only slightly based on the drivetrain of your model. While you can expect more miles per gallon from the front-wheel-drive (FWD) configuration with a 14.8-gallon fuel tank, the AWD options give you three more miles of estimated range thanks to its 15.6-gallon tank. The following chart showcases the minute differences between the two drivetrain options.
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| 2025 GMC Terrain Elevation FWD | 2025 GMC Terrain Elevation AWD | |
|---|---|---|
| Engine | 1.5L 4-cyl Turbo | 1.5L 4-cyl Turbo |
| Horsepower | 175 | 175 |
| Torque | 184 lb-ft | 203 lb-ft |
| Drivetrain | FWD | AWD |
| Transmission | CVT | 8-speed auto |
| EPA-Est. MPG (Cty / Hwy / Comb) | 26 / 28 / 272 | 24 / 28 / 253 |
| Total Driving Range | 400 mi1 | 390 mi1 |
| Fuel Tank Size | 14.8-gal | 15.6-gal |
| Recommended Fuel Type | Regular unleaded (87 octane) | Regular unleaded (87 octane) |
As you can see, the FWD boasts the very slightly more impressive EPA-estimated 26/28/27 MPG (City/Highway/Combined),2 while the AWD has the still competitive EPA-estimated 24/28/25 MPG (City/Highway/Combined).3 However, the range on both vehicles is quite similar due to the larger gas tank on the GMC Terrain AWD models.
These similarities are shared thanks to the efficient engine that powers all Terrain models: the 1.5-liter four-cylinder turbo engine. This engine outputs 175 horsepower and 203 pound-feet of torque on AWD models, perfect for keeping your drive fuel-conscious and putting out enough power to overcome medium-difficulty off-road trails. Models with FWD get the same 175 horsepower but get a dip to 184 pound-feet of torque – still appealing for those who value a lighter ride and don't need as much road grip.
These 2025 GMC Terrain miles per gallon numbers are so close that no matter which drivetrain option you choose from our all-new Terrain vehicles, you'll have an excellent gas range and aggressive EPA-estimated MPG.
2025 GMC Terrain Fuel Economy MPG Compared to the Competition
The fuel efficiency of both the FWD and AWD Terrain drivetrains is competitive within the space of small SUVs. For example, the 2025 Volkswagen Tiguan with 4MOTION features a lower EPA-estimated 22/30/25 MPG (City/Highway/Combined)4 while not including a robust suite of off-roading features like Hill Descent Control or a Drive Mode Selector system. Combining impeccable off-roading features with a powerful and innovative engine is why the GMC Terrain is so enticing.
When you look at SUVs with similar levels of off-road capability, the GMC Terrain MPG remains competitive. For example, the 2025 Kia Sportage X-Pro features an EPA-estimated 23/30/26 MPG (City/Highway/Combined).5 The Sportage comes with similar off-road features to the GMC Terrain, such as acceptable ground clearance, but only matches up to the Terrain AWD EPA-estimated highway MPG starting at the penultimate trim. Its other AWD trims are less fuel-efficient. Meanwhile, the GMC Terrain SUV can handle a bit of light off-road fun, all while providing accessible estimated MPG figures.
What Is the GMC Terrain Fuel Tank Capacity and Effective Range?
Much like the vehicle's MPG, the Terrain's fuel tank capacity changes based on your drivetrain. If you have an FWD Terrain, you'll have a gas tank with 14.8 gallons of capacity. Meanwhile, the AWD drivetrain increases that number to 15.6 gallons.
Because of their similar EPA-estimated MPG ratings, AWD is preferable if your goal is to drive consistently without stopping at gas stations. Its respectable 390 miles of gas range1 is excellent for a drive to your adventures, a fun weekend by the lake or at a campsite, and returning home with plenty of breathing room. The FWD range of 400 miles1 is excellent, too, and not different enough from the AWD value to make the total gas range the difference maker.
However, keep in mind that these values are for combined EPA-estimated MPG ratings. If you are constantly riding on rough roads or commuting in city traffic, expect your range to be less impressive – while still being able to easily surpass the distance of a weekend trek or your daily commute.
The Best 2025 GMC Terrain Gas Type
The 2025 Terrain keeps things simple with its engineering; your vehicle will run smoothly on regular unleaded gasoline. No need to purchase high-octane fuel or indulge in ethanol-free options unless you desire to do so.
Premium fuel won't hurt the engine of your 2025 Terrain but is unnecessary for day-to-day travel. If you have questions about fuel quality, gas station options, and what you should get for your Terrain, contact us or your trusted local GMC dealer.
Explore a Brand-New 2025 GMC Terrain Today
GMC Terrain MPG is only one aspect of how this small SUV excels in the field of off-road-ready models. Go to your local trusted GMC dealership, like Jones Buick GMC Casa Grande, and tour the all-new GMC inventory. You'll find the Terrain trim – whether it's from the 2025 Terrain lineup or the newly released 2026 Terrain options – that best suits your needs. We'll also help you set up a test drive to get a feel for its handling and driving style.
Then, when you're ready to consider financing or leasing, be sure to check out all new lease specials at our dealership. These make leasing your next adventurous SUV much more straightforward and stress-free.
Frequently Asked Questions About the 2025 GMC Terrain Gas Mileage
Are there any fuel-saving technologies included in the GMC Terrain?
The 1.5-liter turbo engine of the GMC Terrain is paired with an efficient standard CVT to ensure optimal performance on the interstate or the roads less traveled. This innovative engine is optimized to use regular unleaded gasoline, enhancing fuel efficiency at a price you can get behind. Automatic Stop/Start can also help you conserve fuel in traffic.
What is the expected fuel efficiency for the most popular GMC Terrain trim levels?
For 2025, there is only one trim (the Elevation), which gets an EPA-estimated 26/28/27 MPG (City/Highway/Combined)2 with front-wheel drive, while the all-wheel drive models get an EPA-estimated 24/28/25 MPG (City/Highway/Combined).3 The 2026 models with FWD are expected to get the same MPG values as their predecessor, while the AWD models may vary slightly regardless of trim.
What kind of fuel does the GMC Terrain require?
The GMC Terrain is engineered to run on regular unleaded gasoline with an octane rating of 87. However, premium fuel can be used if you want to give your vehicle the best possible gasoline option. This is an unnecessary step, though, as your model may not provide any detectable difference with premium fuel. Get more details from our Jones Buick GMC Casa Grande specialists.
1Estimated ranges provided are subject to variation based on factors such as fuel levels, driving habits, road conditions, and individual vehicle performance. These estimates should be used for comparison purposes only and shall not be solely relied upon.
2EPA-estimated mpg for the 1.5-liter four-cylinder engine with a CVT and FWD. Estimates only. For more information, please visit the official U.S. government source for all fuel economy at www.fueleconomy.gov
3EPA-estimated mpg for the 1.5-liter four-cylinder engine with an eight-speed automatic transmission and AWD. Estimates only. For more information, please visit the official U.S. government source for all fuel economy at www.fueleconomy.gov
422 city/30 highway mpg (2025 Volkswagen Tiguan 2.0-liter turbocharged engine and eight-speed automatic transmission). EPA estimates. Your mileage will vary and depends on several factors, including your driving habits and vehicle condition.
5Based on EPA estimates. Actual mileage will vary with options, driving conditions, driving habits and your vehicle's condition. See www.fueleconomy.gov.