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1,598 listings
- Price Drop$17,298great price$1,976 below market
- 68,018 miles
- No accidents, 1 owner, corporate fleet vehicle
- 5 Seats, 26 City / 30 Hwy MPG
- Auffenberg Ford O'Fallon (14 mi away)
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Located in O Fallon, IL / 14 miles away from Saint Louis, MO
2021 GMC Terrain SLE CARFAX One-Owner.Quicksilver Metallic FWD 9-Speed Automatic 1.5L DOHC 8-Way Power Driver Seat Adjuster, Driver & Front Passenger...
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:
27 Combined MPG (26 City/30 Highway)
Listing Information:
VIN: 3GKALMEV6ML346087
Stock: 22873FRCZ
Certified Pre-Owned: No
Listed since: 05-02-2025 - New Listing$17,866good price$1,496 below market
- 111,340 miles
- No accidents, 1 owner, personal use only
- 5 Seats, 26 City / 30 Hwy MPG
- Auffenberg Kia (15 mi away)
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Located in Shiloh, IL / 15 miles away from Saint Louis, MO
Recent Arrival! CARFAX One-Owner. Clean CARFAX. 2021 GMC Terrain SLT 1.5L DOHC 9-Speed Automatic FWD 4D Sport Utility Satin Steel Metallic 25/30 City/...
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:
28 Combined MPG (26 City/30 Highway)
Listing Information:
VIN: 3GKALPEV2ML374230
Stock: 11449K
Certified Pre-Owned: No
Listed since: 07-29-2025 - New Listing$21,698good price$2,266 below market
- 49,986 miles
- No accidents, 1 owner, personal use only
- 5 Seats, 25 City / 28 Hwy MPG
- Green Chevrolet (152 mi away)
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Located in Peoria, IL / 152 miles away from Saint Louis, MO
2021 GMC Terrain SLT Graphite Gray Metallic | AWD | 49,986 MilesStock #: 47265A | VIN: 3GKALVEV6ML353787Refined, capable, and packed with features...
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: 3GKALVEV6ML353787
Stock: 47265A
Certified Pre-Owned: No
Listed since: 07-31-2025 - $14,500fair price$455 above market
- 176,008 miles
- No accidents, 1 owner, personal use only
- 5 Seats, 25 City / 28 Hwy MPG
- Chrysler Dodge Jeep Ram of Columbia (118 mi away)
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Located in Columbia, MO / 118 miles away from Saint Louis, MO
AWD, 2 USB Data Ports, 2 USB Data Ports w/SD Card Reader, 6-Speaker Audio System Feature, 8-Way Power Driver Seat Adjuster, Adaptive Cruise Control, 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: 3GKALVEV1ML300401
Stock: ML300401
Certified Pre-Owned: No
Listed since: 06-23-2025 - Price Drop$21,750fair price$210 below market
- 53,377 miles
- 1 accident, 2 owners, personal use
- 5 Seats, 26 City / 30 Hwy MPG
- Lou Fusz Kia Terre Haute (159 mi away)
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Located in Terra Haute, IN / 159 miles away from Saint Louis, MO
GREAT MILES! POWER ROOF! LEATHER! BLACK OUT EDITION!Quicksilver Metallic 2021 GMC Terrain SLT 9-Speed Automatic 1.5L DOHC25/30 City/Highway MPG
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:
28 Combined MPG (26 City/30 Highway)
Listing Information:
VIN: 3GKALPEV5ML330173
Stock: PP1425B
Certified Pre-Owned: No
Listed since: 06-21-2025 - $20,544fair price$196 below market
- 49,803 miles
- 1 accident, 1 owner, personal use only
- 5 Seats, 26 City / 30 Hwy MPG
- AutoCenters Nissan (28 mi away)
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Located in Herculaneum, MO / 28 miles away from Saint Louis, MO
ONE OWNER VEHICLE, Elevation Edition, Driver Convenience Package, Terrain SLE, 4D Sport Utility, Satin Steel Metallic, 2 USB Data Ports w/Auxiliary In...
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:
27 Combined MPG (26 City/30 Highway)
Listing Information:
VIN: 3GKALMEV4ML325951
Stock: A84341
Certified Pre-Owned: No
Listed since: 07-18-2025 - New Listing$16,999good price$647 below market
- 102,779 miles
- 1 accident, 1 owner, personal use only
- 5 Seats, 25 City / 28 Hwy MPG
- Auto House of Bloomington (142 mi away)
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Located in Bloomington, IL / 142 miles away from Saint Louis, MO
Check out this 2021 GMC TERRAIN SLE! 1 Owner! CLEAN CARFAX! Features include: alloy wheels, cruise control, backup camera, heated seats, & more! CAL...
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: 3GKALTEV3ML355887
Stock: 355887
Certified Pre-Owned: No
Listed since: 03-01-2025 - Price Drop$21,750fair price$4 above market
- 66,000 miles
- No accidents, 1 owner, personal use only
- 5 Seats, 25 City / 28 Hwy MPG
- Lou Fusz Kia Terre Haute (159 mi away)
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Located in Terra Haute, IN / 159 miles away from Saint Louis, MO
1-OWNER! CLEAN CARFAX! NICELY EQUIPPED! KBB Fair Market Price: $23,527Summit White 2021 GMC Terrain SLT 9-Speed Automatic 1.5L DOHC25/28 City/Highway ...
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: 3GKALVEV6ML373277
Stock: P2940B
Certified Pre-Owned: No
Listed since: 06-30-2025 - $23,999
- 62,010 miles
- No accidents, 2 owners, personal use only
- 5 Seats, 26 City / 30 Hwy MPG
- Roy Schmidt Honda (94 mi away)
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Located in Effingham, IL / 94 miles away from Saint Louis, MO
EquipmentThis vehicle has auto-adjust speed for safe following. The rear parking assist technology on this vehicle will put you at ease when r...
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:
28 Combined MPG (26 City/30 Highway)
Listing Information:
VIN: 3GKALPEV4ML319973
Stock: HT1870B
Certified Pre-Owned: No
Listed since: 07-19-2025 - $18,994
- 102,038 miles
- No accidents, 3 owners, rental vehicle
- 5 Seats, 25 City / 28 Hwy MPG
- Integrity Motors Group (153 mi away)
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Located in Evansville, IN / 153 miles away from Saint Louis, MO
Ebony Twilight Metallic 2021 GMC Terrain SLT AWD 9-Speed Automatic 1.5L DOHC AWD.25/28 City/Highway MPGAll of our vehicles are Carfax certified a...
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: 3GKALVEV7ML313587
Stock: 313587
Certified Pre-Owned: No
Listed since: 04-26-2025 - Price Drop$13,999great price$3,468 below market
- 102,225 miles
- 1 accident, 4 owners, corporate fleet vehicle
- 5 Seats, 26 City / 30 Hwy MPG
- Auffenberg Mazda (15 mi away)
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Located in Shiloh, IL / 15 miles away from Saint Louis, MO
2020 GMC Terrain SLT 1.5L DOHC 9-Speed Automatic FWD 4D Sport Utility Graphite Gray Metallic 26/30 City/Highway MPG 2 USB Data Ports, 2 USB Data Ports...
AutoCheck Vehicle History Summary
Accident Free Vehicle: No
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:
28 Combined MPG (26 City/30 Highway)
Listing Information:
VIN: 3GKALPEV9LL242418
Stock: 10503MJH
Certified Pre-Owned: No
Listed since: 05-16-2025 - New Listing$19,722
- 118,099 miles
- 1 accident, 1 owner, personal use only
- 5 Seats, 26 City / 30 Hwy MPG
- Auffenberg Ford O'Fallon (14 mi away)
Close
Located in O Fallon, IL / 14 miles away from Saint Louis, MO
2021 GMC Terrain SLT CARFAX One-Owner.Summit White FWD 9-Speed Automatic 1.5L DOHC 2 USB Data Ports, 2 USB Data Ports w/SD Card Reader, 3.47 Axle Rat...
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:
28 Combined MPG (26 City/30 Highway)
Listing Information:
VIN: 3GKALPEV4ML320105
Stock: 23132FZ
Certified Pre-Owned: No
Listed since: 08-01-2025 - $21,397good price$1,679 below market
- 28,076 miles
- No accidents, 1 owner, corporate fleet vehicle
- 5 Seats, 25 City / 30 Hwy MPG
- EchoPark Automotive St. Louis (25 mi away)
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Located in Chestefield, MO / 25 miles away from Saint Louis, MO
At EchoPark, it’s all about offering you options for a happy experience. We have thousands of new-to-you makes and models that range from sedans to tr...
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:
27 Combined MPG (25 City/30 Highway)
Listing Information:
VIN: 3GKALMEV5NL123587
Stock: PNL123587
Certified Pre-Owned: No
Listed since: 07-11-2025 - Price Drop$23,870fair price$403 below market
- 8,913 miles
- No accidents, 1 owner, personal use only
- 5 Seats, 25 City / 30 Hwy MPG
- Sapaugh GM Country (29 mi away)
Close
Located in Herculaneum, MO / 29 miles away from Saint Louis, MO
** We are 15 minutes south of St. Louis. Everyone leaves happy! Cayenne Red Tintcoat 2022 GMC Terrain SLE FWD 9-Speed Automatic 1.5L DOHC Cayenne Red ...
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:
27 Combined MPG (25 City/30 Highway)
Listing Information:
VIN: 3GKALMEV8NL195903
Stock: 2554791
Certified Pre-Owned: No
Listed since: 05-15-2025 - $16,481good price$1,310 below market
- 97,726 miles
- No accidents, 1 owner, personal use only
- 5 Seats
- Watermark Honda (136 mi away)
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Located in Paducah, KY / 136 miles away from Saint Louis, MO
One Owner Local Trade-In, Clean Autocheck Report, 6-Way Power Front Passenger Seat, Front Passenger 2-Way Power Lumbar, Hands-Free Rear Power Programm...
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:
Listing Information:
VIN: 3GKALPEX5LL176306
Stock: B50136A
Certified Pre-Owned: No
Listed since: 06-13-2025 - Price Drop$18,324fair price$1,004 below market
- 68,135 miles
- No accidents, 1 owner, personal use only
- 5 Seats, 25 City / 28 Hwy MPG
- Lou Fusz Subaru St Louis (12 mi away)
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Located in Saint Louis, MO / 12 miles away from Saint Louis, MO
CARFAX One-Owner. 2020 Graphite Gray Metallic GMC Terrain AWD 9-Speed Automatic 1.5L DOHC AWD.Odometer is 19765 miles below market average!Thanks for ...
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: 3GKALVEV8LL166887
Stock: S25740A
Certified Pre-Owned: No
Listed since: 05-21-2025 - New Listing$23,777fair price$440 below market
- 14,646 miles
- No accidents, 1 owner, personal use only
- 5 Seats, 25 City / 30 Hwy MPG
- Dave Sinclair Ford (11 mi away)
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Located in Saint Louis, MO / 11 miles away from Saint Louis, MO
Our One Owner, Accident-Free, Low Mile 2022 GMC Terrain SLE, equipped with the Driver Convenience Package, is smartly equipped for enhanced driving in...
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:
27 Combined MPG (25 City/30 Highway)
Listing Information:
VIN: 3GKALMEV4NL224944
Stock: B5019501
Certified Pre-Owned: No - $21,132good price$718 below market
- 48,364 miles
- No accidents, 1 owner, personal use only
- 5 Seats, 25 City / 30 Hwy MPG
- Jack Schmitt Chevrolet of O'Fallon (15 mi away)
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Located in O Fallon, IL / 15 miles away from Saint Louis, MO
Clean CARFAX. CARFAX One-Owner. This 2022 GMC Terrain comes equipped with the following - Driver Convenience Package (8-Way Power Driver Seat Adjuster...
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:
27 Combined MPG (25 City/30 Highway)
Listing Information:
VIN: 3GKALMEV1NL143044
Stock: 43218-1
Certified Pre-Owned: No
Listed since: 05-14-2025 - New Listing$19,995good price$1,173 below market
- 85,879 miles
- No accidents, 2 owners, personal use
- 5 Seats, 22 City / 28 Hwy MPG
- Auto House of Bloomington (142 mi away)
Close
Located in Bloomington, IL / 142 miles away from Saint Louis, MO
Check out this 2020 GMC TERRAIN DENALI ! 2 Owner! CLEAN CARFAX! ONLY 85K MILES! Features include: alloy wheels, cruise control, backup camera, leathe...
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:
24 Combined MPG (22 City/28 Highway)
Listing Information:
VIN: 3GKALSEX3LL175688
Stock: 175688
Certified Pre-Owned: No
Listed since: 07-31-2025 - $23,995fair price$843 above market
- 14,618 miles
- No accidents, 1 owner, personal use
- 5 Seats, 25 City / 30 Hwy MPG
- Laura Buick GMC (11 mi away)
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Located in Collinsville, IL / 11 miles away from Saint Louis, MO
This Certified Pre-Owned vehicle comes with the following benefits: -12-month/12,000-mile Bumper-to-Bumper Limited Warranty (whichever comes first) fr...
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:
27 Combined MPG (25 City/30 Highway)
Listing Information:
VIN: 3GKALMEV0NL289807
Stock: P10112
Certified Pre-Owned: Yes
Listed since: 07-18-2025 - Price Drop$20,997good price$886 below market
- 89,721 miles
- No accidents, 1 owner, corporate fleet vehicle
- 5 Seats, 25 City / 30 Hwy MPG
- BMW of Columbia (120 mi away)
Close
Located in Columbia, MO / 120 miles away from Saint Louis, MO
Heated Seats, Leather, Carfax One Owner, Head-Up Display, Terrain SLT, 4D Sport Utility, 1.5L DOHC, 9-Speed Automatic, FWD, Ebony Twilight Metallic, J...
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:
28 Combined MPG (25 City/30 Highway)
Listing Information:
VIN: 3GKALPEV4NL200760
Stock: BU2801
Certified Pre-Owned: No
Listed since: 07-11-2025
Showing 1 - 21 out of 1,598 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 Saint Louis, MO Values
Estimated values
2021 GMC Terrain SLE 4dr SUV (1.5L 4cyl Turbo 9A) with no options
| Condition | Trade-In | Private Party | Dealer Retail |
|---|---|---|---|
| Outstanding | $14,710 | $16,471 | $18,237 |
| Clean | $14,397 | $16,112 | $17,830 |
| Average | $13,875 | $15,514 | $17,152 |
| Rough | $13,197 | $14,736 | $16,271 |
The average list price of a used 2021 GMC Terrain in Saint Louis, Missouri is $19,957. The average mileage on a used GMC Terrain 2021 for sale in Saint Louis, Missouri is 72,274. Based on the average mileage of 72,274 for used 2021 GMC Terrain for sale in Saint Louis, MO 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 Saint Louis, Missouri to be $13,875.
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