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Two GMC SUVs go head-to-head in our Terrain vs. Acadia comparison. A matchup across segments, this showdown covers engine specs, sizing details, trims, and safety tech, among other aspects. We have the details in our guide here, but when you're ready for an in-person experience, the team at our Generation Buick GMC location can accommodate you.
Let's kick off our Terrain vs. Acadia comparison with the juiciest details: specs and performance. Comparing a small two-row SUV like the Terrain to a midsize three-row SUV like the Acadia highlights distinct performance capabilities:
No matter which new GMC SUV you prefer, you can expect specifications that rise to the occasion.
| 2026 GMC Terrain vs. Acadia Performance Specs | ||
|---|---|---|
 |
 |
|
| 2026 GMC Terrain | 2026 GMC Acadia | |
| Engine | 1.5L Turbo 4-cyl | 2.5L Turbo |
| Horsepower | 175 | 328 |
| Torque |
|
326 lb-ft |
| Max Towing Capacity | 1,500 lbs1 | 5,000 lbs1 |
| Transmission |
|
8-speed automatic |
| Drivetrain |
|
|
| Max EPA-Est. MPG (Cty / Hwy / Comb) | 26 / 28 / 272 | 20 / 26 / 223 |
Because the Acadia and Terrain are both available within our current GMC offers and hail from the same automaker, you can expect similar trim lineups.
Both the Acadia and Terrain feature the Elevation, AT4, and Denali trims. However, the GMC Acadia ups the ante with the Denali Ultimate trim. This range-topping edition adds premium appointments and additional luxury features. Our team can walk you through a GMC Terrain Denali vs. GMC Acadia Denali comparison to see which fits your lifestyle.
Another difference between the Terrain vs. Acadia SUVs is regarding their interior appointments. The GMC Terrain is the more cost-effective option and comes with fewer standard creature comforts and conveniences, while the Acadia is more feature-rich with every trim.
However, the two do share many standard appointments, such as:
However, the GMC Acadia offers select high-end features that remain unavailable on the GMC Terrain, such as a 12-speaker Bose® audio system. It also comes standard with things that the Terrain includes as optional upgrades, like wireless device charging.
If we look at the Denali trims for each vehicle, we find similarly comfortable features standard. Either Denali model might be a great choice for those who prefer fine touches and premium options, like heated and ventilated front seats.
The sizes of the Terrain vs. Acadia vehicles might be the most significant difference between the two. In fact, the models hail from two different vehicle segments. The GMC Terrain is a small SUV with two rows and five seats, while the GMC Acadia is a midsize SUV with three rows and seating for up to eight.
A more thorough review shows that the GMC Acadia is almost 23 inches longer than the new GMC Terrain, with a wheelbase that measures almost 13.5 inches longer than the Terrain, too. This allows the GMC Acadia to accommodate more cargo and passenger volume, as well as an additional row of seating.
You can learn more about how the two measure up against each other in our visual below:
| 2026 GMC Terrain vs. Acadia Size | ||
|---|---|---|
| 2026 GMC Terrain | 2026 GMC Acadia | |
| Length | 181 in | 203.96 in |
| Width | 74.5 in | 79.56 - 79.95 in |
| Height | 65.81 - 66.16 in | 71.44 - 72.03 in |
| Ground Clearance | 5.75 - 6.52 in | 6.77 - 7.75 in |
| Cargo Volume (Standard / Max) | 29.8 / 63.5 cu ft | 23 / 97.5 cu ft |
| Seating Capacity | 5 | 7 or 8 |
| Wheelbase | 107.48 in | 120.93 in |
| Base Curb Weight | 3,598 lbs | 4,550 lbs |
| Max Headroom (Front / Rear) | 40.58 / 39.18 in | 42.6 / 40.03 in |
| Legroom (Front / Rear) | 43.95 / 39.7 in | 44.28 / 41.45 in |
| Shoulder Room (Front / Rear) | 57.69 / 55.7 in | 62 / 62 in |
| Hip Room (Front / Rear) | 55.25 / 51 in | 59.18 / 58.4 in |
The GMC Acadia and GMC Terrain are both safe and reliable cars with unique histories. With either, you'll benefit from a range of cutting-edge safety technologies and driver aids like:
And if you choose a used GMC Acadia from 2025, you can get inside a Top Safety Pick winner by the IIHS.4
Meanwhile, a used GMC Terrain can mean sliding into a Consumer Reports Recommended vehicle if you choose a model from 2019, 2022, 2023, or 2024.5
So, which model speaks more to your ideal vision of driving excellence? Your Suffolk County GMC dealer can help you make the right call for you and your family. We can also go deeper with an in-person Terrain vs. Acadia comparison.
If you're one of our New York neighbors, consider visiting us to learn about starting a GMC Acadia lease or a GMC Terrain lease.
Between the Terrain and the Acadia, the Terrain is the smaller model. The Acadia measures 203.96 inches long, while the Terrain measures 181 inches long. With a width of 74.5 inches, it's especially useful in parking garages or on crowded city roads. Additionally, it measures up to 66.16 inches tall, while the Acadia tops out at 72.03 inches.
A look at the GMC Acadia dimensions shows the model is nearly 204 inches in length. This is about 23 inches longer than the GMC Terrain. The Acadia also has an additional row, as it is a three-row SUV and seats between seven and eight passengers, depending on the configuration. The Terrain is more compact with two rows and seating for five.
As a three-row SUV, the GMC Acadia offers much more cargo space than the GMC Terrain. The Terrain, admittedly, offers more cargo volume behind its rearmost row, but it caps out at 63.5 cubic feet. Meanwhile, the GMC Acadia offers up to 97.5 cubic feet of cargo volume.
Both the GMC Terrain and GMC Acadia are recipients of appealing reliability rating values. The GMC Terrain offers better value according to J.D. Power, earning an 80 out of 100 in Quality & Reliability.6 However, the GMC Acadia earned a Top Safety Pick award by the IIHS in 2025,4 while the GMC Terrain did not.
8/12/2025
As soon as I walked in I was greeted immediately by Khaled! He was extremely understanding and helpful with all of my concerns..the transition from turning in my lease and getting me into a new lease of a beautiful 2025 Acadia (my 4th one) was nothing but seamless! I would highly recommend Khaled and hope to do business again with him in the future..as well with Generation Buick GMC. Extremely satisfied customer!
1GM-estimated. Maximum trailering ratings are intended for comparison purposes only. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner's Manual. The trailering capacity of your specific vehicle may vary. The weight of passengers, cargo and options or accessories may reduce the amount you can trailer.
2EPA-estimated mpg for the 1.5-liter Turbo 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 https://www.fueleconomy.gov.
3EPA-estimated mpg for the 2.5-liter Turbo engine with an eight-speed automatic transmission and FWD. Estimates only. For more information, please visit the official U.S. government source for all fuel economy at https://www.fueleconomy.gov.
4Reference to this third-party claim is solely for informational purposes and not to be relied upon. For details regarding this award, visit https://www.iihs.org/ratings/vehicle/GMC/acadia-4-door-suv/2025
5Reference to this third-party claim is solely for informational purposes and not to be relied upon. For details regarding this rating, Consumer Reports members can visit https://www.consumerreports.org/search/?query=GMC%20Terrain
6Reference to this third-party claim is solely for informational purposes and not to be relied upon. For details regarding this rating, visit https://www.jdpower.com/cars/2026/gmc/terrain
