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2,803 listings
- $19,999great price$2,659 below market
- 56,341 miles
- 1 accident, 1 owner, personal use only
- 5 Seats, 25 City / 28 Hwy MPG
- Faulkner Mazda Trevose (341 mi away)
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Located in Trevose, PA / 341 miles away from South Portland, ME
CARFAX One-Owner. Summit White 2021 GMC Terrain SLE AWD 9-Speed Automatic 1.5L DOHC Just Inspected, AWD, 4-Wheel Disc Brakes, 8-Way Power Driver Seat ...
AutoCheck Vehicle History Summary
Accident Free Vehicle: No
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
26 Combined MPG (25 City/28 Highway)
Listing Information:
VIN: 3GKALTEV0ML366362
Stock: ML366362
Certified Pre-Owned: No
Listed since: 06-19-2025 - $19,250great price$2,641 below market
- 73,270 miles
- No accidents, 1 owner, personal use
- 5 Seats, 25 City / 28 Hwy MPG
- Koons Tysons Toyota (485 mi away)
- Five Star Dealer
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Located in Vienna, VA / 485 miles away from South Portland, ME
VEHICLE PROFESSIONALLY DETAILED, GOOD TIRES, GOOD BRAKES, RECENT TRADE, Terrain SLT, 4D Sport Utility, 1.5L DOHC, Automatic, AWD, Ebony Twilight Metal...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
26 Combined MPG (25 City/28 Highway)
Listing Information:
VIN: 3GKALVEV4ML339094
Stock: KTT250785A
Certified Pre-Owned: No
Listed since: 07-05-2025 - $20,000great price$1,882 below market
- 43,091 miles
- 1 accident, 2 owners, personal use
- 5 Seats, 25 City / 28 Hwy MPG
- AutoPROVED (335 mi away)
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Located in Allentown, PA / 335 miles away from South Portland, ME
Thank you for choosing AutoPROVED, where Cars Cost Less and home of No Haggle Pricing. All of our vehicles go through a RIGOROUS 118pt inspection and ...
AutoCheck Vehicle History Summary
Accident Free Vehicle: No
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
26 Combined MPG (25 City/28 Highway)
Listing Information:
VIN: 3GKALTEV7ML376175
Stock: A2506205
Certified Pre-Owned: No
Listed since: 06-19-2025 - $19,595great price$2,271 below market
- 62,943 miles
- No accidents, 1 owner, rental vehicle
- 5 Seats, 25 City / 28 Hwy MPG
- Auto Haus of Irvington (284 mi away)
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Located in Irvington, NJ / 284 miles away from South Portland, ME
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: No
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
26 Combined MPG (25 City/28 Highway)
Listing Information:
VIN: 3GKALVEV0ML302625
Stock: ML302625
Certified Pre-Owned: No
Listed since: 01-02-2024 - Price Drop$19,742fair price$248 below market
- 65,586 miles
- No accidents, 1 owner, personal use only
- 5 Seats, 25 City / 28 Hwy MPG
- Lia Nissan of Glens Falls (168 mi away)
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Located in Queensbury, NY / 168 miles away from South Portland, ME
Blue Emerald Metallic 2021 GMC Terrain SLT Priced below KBB Fair Purchase Price! 25/28 City/Highway MPGOne Owner *, Clean CARFAX*, Brake assist, Elect...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
26 Combined MPG (25 City/28 Highway)
Listing Information:
VIN: 3GKALVEV6ML386594
Stock: ML386594T
Certified Pre-Owned: No
Listed since: 06-17-2025 - $20,999fair price$236 below market
- 63,000 miles
- No accidents, 1 owner, personal use only
- 5 Seats, 25 City / 28 Hwy MPG
- Portsmouth Chevrolet (45 mi away)
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Located in Portsmouth, NH / 45 miles away from South Portland, ME
*ONE OWNER, *2021 GMC TERRAIN SLE, *ALL WHEEL DRIVE, *BLUETOOTH, *BACK UP CAMERA, *APPLE CARPLAY/ANDROID AUTO, *LANE DEPARTURE, *BLIND SPOT, *ADAPTIVE...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
26 Combined MPG (25 City/28 Highway)
Listing Information:
VIN: 3GKALTEV8ML375309
Stock: CH4243A
Certified Pre-Owned: No
Listed since: 06-17-2025 - Price Drop$20,495good price$803 below market
- 19,259 miles
- No accidents, 1 owner, corporate fleet vehicle
- 5 Seats, 25 City / 28 Hwy MPG
- Driveway (267 mi away)
- Home delivery*
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Located in Paramus, NJ / 267 miles away from South Portland, ME
CarFax No Accidents Reported,CarFax 1-Owner,Low Mileage,Apple CarPlay,Back-Up Camera,Bluetooth,Keyless Start,Lane Keeping Assist,Remote Start,Turbo/Su...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: No
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
26 Combined MPG (25 City/28 Highway)
Listing Information:
VIN: 3GKALTEV6ML307347
Stock: PHP9083
Certified Pre-Owned: No - $23,611good price$915 below market
- 22,012 miles
- No accidents, 2 owners, personal use
- 5 Seats, 25 City / 28 Hwy MPG
- O'Neil GMC (341 mi away)
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Located in Warminster, PA / 341 miles away from South Portland, ME
This 2021 GMC Terrain SLE in Ebony Twilight Metallic features: 1.5L DOHC 9-Speed Automatic AWD Clean CARFAX. Certified.GMC Certified Pre-Owned Detail...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
26 Combined MPG (25 City/28 Highway)
Listing Information:
VIN: 3GKALTEV4ML400142
Stock: 99-9347B
Certified Pre-Owned: Yes
Listed since: 04-12-2025 - Price Drop$17,690good price$1,379 below market
- 99,674 miles
- No accidents, 1 owner, personal use only
- 5 Seats, 25 City / 28 Hwy MPG
- Park Maple City Dodge Chrysler Jeep Ram (383 mi away)
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Located in Hornell, NY / 383 miles away from South Portland, ME
Blue Emerald Metallic 2021 GMC Terrain SLT AWD 9-Speed Automatic 1.5L DOHCAWD, 2 USB Data Ports, 4-Wheel Disc Brakes, 6-Speaker Audio System Feature...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
26 Combined MPG (25 City/28 Highway)
Listing Information:
VIN: 3GKALVEV2ML360168
Stock: A60168
Certified Pre-Owned: No
Listed since: 04-04-2025 - Price Drop$22,987fair price$636 above market
- 46,720 miles
- No accidents, 1 owner, personal use only
- 5 Seats, 25 City / 28 Hwy MPG
- Banks Chevrolet Buick GMC (68 mi away)
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Located in Concord, NH / 68 miles away from South Portland, ME
2 USB Data Ports w/Auxiliary Input Jack,4-Way Manual Front Passenger Seat,6-Speaker Audio System Feature,8-Way Power Driver Seat Adjuster,Air Conditio...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
26 Combined MPG (25 City/28 Highway)
Listing Information:
VIN: 3GKALTEV6ML395588
Stock: T95588
Certified Pre-Owned: Yes
Listed since: 06-17-2025 - $23,399fair price$242 below market
- 25,572 miles
- No accidents, 1 owner, personal use only
- 5 Seats, 25 City / 28 Hwy MPG
- McGovern GMC (114 mi away)
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Located in Westborough, MA / 114 miles away from South Portland, ME
Recent Arrival! McGovern GMC is proud to present this...White 2021 GMC Terrain SLE 1.5L DOHC 9-Speed Automatic Clean CARFAX.Features Include:Prefer...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
26 Combined MPG (25 City/28 Highway)
Listing Information:
VIN: 3GKALTEV7ML317045
Stock: GM3573
Certified Pre-Owned: No
Listed since: 07-29-2025 - New Listing$23,998fair price$414 below market
- 16,404 miles
- No accidents, 1 owner, personal use only
- 5 Seats, 25 City / 28 Hwy MPG
- CarMax Laurel (459 mi away)
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Located in Laurel, MD / 459 miles away from South Portland, ME
CarMax values transparency and wants you to love your next car, not settle on it. Certain vehicles may have unrepaired safety recalls. Check nhtsa.gov...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: Yes
Features and Specs:
26 Combined MPG (25 City/28 Highway)
Listing Information:
VIN: 3GKALTEV9ML313739
Stock: 27364914
Certified Pre-Owned: No - Price Drop$20,755good price$1,585 below market
- 55,248 miles
- No accidents, 1 owner, personal use only
- 5 Seats, 25 City / 28 Hwy MPG
- Bob Johnson Buick GMC South (372 mi away)
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Located in Henrietta, NY / 372 miles away from South Portland, ME
2021 GMC Terrain SLT AWD Terrain SLT, 1.5L DOHC, 9-Speed Automatic, AWD, Quicksilver Metallic, Jet Black Leather, Black GMC Center Caps w/Black GMC Le...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
26 Combined MPG (25 City/28 Highway)
Listing Information:
VIN: 3GKALVEV2ML382946
Stock: GS260123A
Certified Pre-Owned: No
Listed since: 05-30-2025 - Price Drop$20,874good price$1,014 below market
- 62,985 miles
- No accidents, 1 owner, personal use only
- 5 Seats, 25 City / 28 Hwy MPG
- Handy Buick GMC (162 mi away)
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Located in Saint Albans, VT / 162 miles away from South Portland, ME
CARFAX One-Owner. Clean CARFAX.AWD, Recently Traded In, AWD, 8-Way Power Driver Seat Adjuster, AM/FM radio: SiriusXM, Apple CarPlay/Android Auto, Auto...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
26 Combined MPG (25 City/28 Highway)
Listing Information:
VIN: 3GKALVEV6ML367513
Stock: 17016A
Certified Pre-Owned: No
Listed since: 04-28-2025 - New Listing$18,385good price$714 below market
- 95,289 miles
- No accidents, 2 owners, personal use only
- 5 Seats, 25 City / 28 Hwy MPG
- Burritt Chrysler Dodge Jeep Ram (310 mi away)
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Located in Oswego, NY / 310 miles away from South Portland, ME
Clean AutoCheck, 110-Volt Power Outlet, 2 USB Data Ports, 2 USB Data Ports w/Auxiliary Input Jack, 2 USB Data Ports w/SD Card Reader, 4.2 Multi-Color ...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: Yes
Features and Specs:
26 Combined MPG (25 City/28 Highway)
Listing Information:
VIN: 3GKALTEV5ML348519
Stock: T157B
Certified Pre-Owned: No
Listed since: 07-08-2025 - $20,995fair price$550 below market
- 57,897 miles
- No accidents, 1 owner, personal use only
- 5 Seats, 25 City / 28 Hwy MPG
- Bob Johnson Nissan (371 mi away)
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Located in Rochester, NY / 371 miles away from South Portland, ME
Bluetooth, Hands-Free, Rear Back-Up Camera, AWD, Floor Liner Package (LPO), Front & Rear All-Weather Floor Liners (LPO), Integrated Cargo Liner (LPO),...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
26 Combined MPG (25 City/28 Highway)
Listing Information:
VIN: 3GKALVEV1ML387863
Stock: 25V129A
Certified Pre-Owned: No
Listed since: 05-31-2025 - Price Drop$18,141fair price$7 below market
- 97,497 miles
- No accidents, 1 owner, personal use only
- 5 Seats, 25 City / 28 Hwy MPG
- i.g. Burton Buick GMC of Glen Burnie (448 mi away)
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Located in Glen Burnie, MD / 448 miles away from South Portland, ME
Terrain SLT, 4D Sport Utility, 1.5L DOHC, 9-Speed Automatic, AWD, Summit White, Jet Black w/Perforated Leather-Appointed Seat Trim, 2 USB Data Ports, ...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
26 Combined MPG (25 City/28 Highway)
Listing Information:
VIN: 3GKALVEV7ML355919
Stock: G261001A
Certified Pre-Owned: No
Listed since: 07-22-2025 - $22,486fair price$771 above market
- 41,901 miles
- No accidents, 2 owners, personal use only
- 5 Seats, 25 City / 28 Hwy MPG
- Banks Chevrolet Buick GMC (68 mi away)
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Located in Concord, NH / 68 miles away from South Portland, ME
2 USB Data Ports w/Auxiliary Input Jack,4-Way Manual Driver's Seat,4-Way Manual Front Passenger Seat,6-Speaker Audio System Feature,Air Conditioning,A...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
26 Combined MPG (25 City/28 Highway)
Listing Information:
VIN: 3GKALTEVXML321770
Stock: T21770A
Certified Pre-Owned: Yes
Listed since: 06-03-2025 - $20,900fair price$85 above market
- 57,405 miles
- No accidents, 2 owners, corporate fleet vehicle
- 5 Seats, 25 City / 28 Hwy MPG
- North End Motors (108 mi away)
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Located in Canton, MA / 108 miles away from South Portland, ME
Forward Emergency Braking (FEB), Distance Pacing Cruise Control, Rear View Camera, Apple CarPlay, Google Android Auto, Bluetooth Handsfree, Power Lift...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: No
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
26 Combined MPG (25 City/28 Highway)
Listing Information:
VIN: 3GKALVEV7ML300077
Stock: B23262
Certified Pre-Owned: No
Listed since: 04-04-2024 - $25,271fair price$855 below market
- 25,377 miles
- 1 accident, 1 owner, personal use only
- 5 Seats, 25 City / 28 Hwy MPG
- Bob Weaver Chevrolet GMC (366 mi away)
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Located in Pottsville, PA / 366 miles away from South Portland, ME
***For Current Pricing Visit www.bobweaverauto.com***, AWD.CARFAX One-Owner.AWD 9-Speed Automatic 1.5L DOHCOdometer is 36883 miles below market averag...
AutoCheck Vehicle History Summary
Accident Free Vehicle: No
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
26 Combined MPG (25 City/28 Highway)
Listing Information:
VIN: 3GKALVEVXML392883
Stock: G26502A
Certified Pre-Owned: No
Listed since: 07-10-2025 - $25,998fair price$183 below market
- 30,237 miles
- 1 accident, 1 owner, personal use only
- 5 Seats, 25 City / 28 Hwy MPG
- Herb Chambers Lincoln of Westborough (115 mi away)
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Located in Westborough, MA / 115 miles away from South Portland, ME
INSPECTION COMPLETED Every Herb Chambers Certified pre-owned vehicle receives a complete multi-point inspection by factory trained technicians who ins...
AutoCheck Vehicle History Summary
Accident Free Vehicle: No
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
26 Combined MPG (25 City/28 Highway)
Listing Information:
VIN: 3GKALVEV9ML352035
Stock: RW1547A
Certified Pre-Owned: No
Listed since: 07-29-2025
Showing 1 - 21 out of 2,803 listings
Consumer Reviews for the GMC Terrain
Read recent reviews for the GMC Terrain
2021 GMV Terrain SLT
Stgcret, 04/19/2021
2021 GMC Terrain SLT 4dr SUV (1.5L 4cyl Turbo 9A)
As of today, April 19/2023 I still own my Terrain purchased in November 2020. It has, so far, not given me a minute's issue.
The 1.5L Turbo is "okay" but the 2.0L Turbo is so much better. The Terrain is a very well thought out vehicle. Back seat flip flat at the push of a button and easily clicks back in to place. Seats are at hip height, which at 71, makes them very easy to slide … in and out. The front bucket seats are fairly comfortable with many power adjustments. The front seats could use another 1/2" to 1" of width. I would buy this beauty again.
UPDATE: I purchase my 2021 GMC Terrain brand new in November 2020 before the chip shortage, that isn't an issue with the 2021 at all. I just hit 20,000 miles a couple of weeks ago and all-in-all has been a pleasure to drive. I'm a big guy of 6' 2" and 285 and I easily slide in and out of my Terrain. Quiet ride and efficient and peppy 1.5L Turbo motor, although I would have preferred the 2.0L Turbo like I had in my 2018 Terrain, but the 2020 was the last year for the 2.0L
On the SLT, that I have, are many positions to adjust the front seat and I do prefer the leather over cloth seats. For a 2-row seat SUV, there is plenty of room and the seats fold down at the touch of button or pull that works with the effort of one finger. I really like the info system and Sirius Radio. I have not used the Navigation or phone interface because I just don't need to. One oddball fact I discovered though is that when you want to take out the Cabin Filter, you have to use a 5.5 mm socket and that size is difficult to find. They need to go to a more conventional size like a 6 mm or 1/4 inch.
UPDATE: I drove my 2021 Terrain SLT Elevation Edition out of the dealer showroom on 11/27/2020. I am 6' 2" and 72 yrs old. I specifically like the way I can slide in and easily slide out of the Terrain. I also find the front seat very comfortable and easy to adjust and has a nice lumbar support. I don't find the road noise so bad, but maybe that is because I have Talk Radio on all the time. I do agree that a 2.0 Turbo would be a better engine option. I owned a 2018 Terrain Denali with the 2.0L and I thought I was in a rocket when I stepped on the gas. I have owned my 2021 for 31 months now and have put 21,530 miles on the ol' girl and have not had a single issue, but there was one "what were they thinking moment" the screw for the driving compartment air filter is a 5.5 mm! I did change that filter at 18,000 miles although the manual called for 30,000 miles. Such an odd and hard to find size. I have changed the oil and filter every 5,000 miles and rotated the tires.
I would like to see the same vehicle but 10" to 12" longer and maybe 4" to 6" wider to fit just a bit more beefy seat like the Tahoe has. Other than that I will most likely buy another Terrain and for sure if they reinstate the 2.0L Turbo.
Used 2021 GMC Terrain in South Portland, ME Values
Estimated values
2021 GMC Terrain SLE 4dr SUV AWD (1.5L 4cyl Turbo 9A) with no options
| Condition | Trade-In | Private Party | Dealer Retail |
|---|---|---|---|
| Outstanding | $16,266 | $18,360 | $20,462 |
| Clean | $15,919 | $17,960 | $20,006 |
| Average | $15,342 | $17,293 | $19,246 |
| Rough | $14,592 | $16,426 | $18,257 |
The average list price of a used 2021 GMC Terrain in South Portland, Maine is $21,218. The average mileage on a used GMC Terrain 2021 for sale in South Portland, Maine is 53,224. Based on the average mileage of 53,224 for used 2021 GMC Terrain for sale in South Portland, ME and using an average vehicle condition rating, which means the vehicle may have a few mechanical and/or cosmetic problems and may require a considerable amount of reconditioning, we appraise the average trade-in value of a used GMC Terrain 2021 in South Portland, Maine to be $15,342.
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