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2018 GMC Terrain
#5 Best 2-Row SUVs of 2018

Used 2018 GMC Terrain

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3.9
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2026
2018
Fuel Economy
28 - 32 combined mpg
Horsepower
137 - 252 hp
Seating
5
Cargo Volume
63.3 cu ft
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2018 GMC Terrain Review

Keith Buglewicz

Updated May 16, 2025

Pros

If you’re looking for a sharply styled, comfortable, cleverly outfitted and surprisingly powerful compact SUV, the new GMC Terrain might be just the ticket. It’s packed with cool features like a huge underfloor storage area and lots of storage space, all in a package that looks ruggedly cool, without being a caricature.

Cons

While the Denali is certainly nice inside, the GMC Terrain’s refinement doesn’t quite match its competition, with a plethora of hard plastics throughout the interior. It’s also lacking active cruise control, something that’s sure to make road-trippers reconsider.

What's New?

The 2018 GMC Terrain is all-new this year, sharing its underpinnings with the similarly new Chevrolet Equinox. With three engine choices and front- or all-wheel drive, it’s slightly smaller than its predecessor, but right on target with the rest of the class.

The 2018 GMC Terrain is about as all-new as a vehicle can be. Sharing virtually nothing but its name with its predecessor, the new Terrain is leaner, lighter, a little smaller, and far more competitive against the likes of the Honda CR-V, Toyota RAV4, Nissan Rogue and other class leaders. Under the hood you’ll find one of three turbocharged engines, including a diesel, front- or all-wheel drive and of course a more luxurious Denali model with a Lots-O-Chrome grille and other upscale touches. It’s also available with all the modern extras, like Apple CarPlay and Android Auto, automatic braking and collision alert, lane-keep assist, and an around-view camera. Strangely absent is active cruise control, but overall the 2018 GMC Terrain makes a solid case for itself against tough competition.

2018 GMC Terrain Pricing

2018 GMC Terrain pricing starts at $13,399 for the Terrain SL Sport Utility 4D, which had a starting MSRP of $25,990 when new. The range-topping 2018 Terrain Denali Sport Utility 4D starts at $17,470 today, originally priced from $40,295.

Original MSRP
KBB Fair Purchase Price (national avg.)
$25,990
$13,399
$28,895
$13,656
$32,395
$14,860
$34,395
$14,275
$35,195
$14,144
$40,295
$17,470

The Kelley Blue Book Fair Purchase Price for any individual used vehicle can vary greatly according to mileage, condition, location, and other factors. The prices here reflect what buyers are currently paying for used 2018 GMC Terrain models in typical condition when purchasing from a dealership. These prices are updated weekly.

Driving the GMC Terrain

The 2018 GMC Terrain shares most of its underpinnings with the also-new Chevrolet Equinox. Like its Chevy brother, GMC Terrain buyers can choose among three different turbocharged 4-cylinder engines: a 1.5-liter, a more powerful 2.0-liter, or a diesel-burning 1.6-liter. All three engines offer their charms, with the base being the least expensive, the diesel offering excellent fuel economy, and the 2.0-liter bringing surprisingly good acceleration to the party. All come standard with automatic transmissions — the diesel comes with a 6-speed, the other two with a 9-speed — and the transmissions use a button-type gear selector on the lower dash. It looks unusual and takes a while to get used to, but in practice we found it to be simple to operate and intuitive enough to use without looking. Around town the Terrain offers a similar driving experience to the Chevy Equinox: comfortable, quiet, and with enough agility in corners that driving it in the mountains isn’t a chore.

Interior Comfort

The 2018 GMC Terrain interior is functional and comfortable, but like most of its competition it’s not what we’d call “luxurious.” Even in the upscale Denali trim, hard plastics dominate the lower portions of the dash and doors, and while we like the embroidered Denali headrests and stitched dash cover, the Denali doesn’t feel as posh inside as the extra price and upscale badge would suggest. The front seats are plenty comfortable though, as are the rears, and we appreciate the excellent cargo space and flexibility. The Terrain was also plenty quiet around town and on the highway.

Exterior Styling

There’s no dispute that the 2018 Terrain is a good-looking crossover SUV. The sharp lines, LED accents in the headlights, and stylized headlights all keep the Terrain in the GMC-family-design aesthetic, but with a modern and fresh twist. We like the “floating” effect of the roof, with the rearmost pillar painted black. Standard Terrain models get a grille with three crossbars; step up to the Terrain Denali and the grille gets a giant cheese-grater-type chrome mesh that, in fairness, looks pretty good. Denali models also get additional chrome work on the outside mirrors and lower rocker panels.

Favorite Features

DIESEL POWER
The diesel available in the 2018 GMC Terrain results in a combined fuel-economy score of 32 mpg, whether you choose front- or all-wheel drive. That’s solid fuel economy without any compromises in performance, cargo area, or anything else. Plus, the diesel is remarkably smooth.

FLEXIBLE CARGO
Not only does the GMC Terrain offer excellent cargo capacity behind the second row of seats, there’s an exceptionally generous storage area under the floor as well for storing items you want to keep out of sight. Additionally, the front-passenger seat folds forward, making it simple to carry long objects.

Standard Features

The base 2018 GMC Terrain SL comes standard with the 1.5-liter 4-cylinder engine and front-wheel drive. There’s also a 7-inch touch-screen infotainment system, push-button start and keyless entry, a rearview camera, and four USB ports, two of which can be used for data. The audio system includes Bluetooth for audio and phone, and Apple CarPlay and Android Auto are both standard as well. There’s standard leather on the steering wheel, although the seats are covered in cloth, and manually adjustable. Safety equipment includes GMC’s Rear Seat Reminder, a chime and dash message that reminds you not to forget whoever’s sitting back there.

Factory Options

GMC’s new Terrain comes with a long list of options, most of which come at various trim levels. Most notable is the choice of diesel or more powerful gasoline engines, with the diesel available in SLE and SLT models, and the turbo optional in SLE and SLT, and standard on Denali models. All-wheel drive is also available across the board, except for base SL models. As you work your way up the trim ladder you’ll find an 8-inch touch-screen navigation system with an upgraded Bose audio system, heated and cooled leather seats, heated rear seats, and upgraded safety systems that include collision avoidance, blind spot and rear cross-traffic alert, an around-view camera, and lane-departure warning. Not available at any price is active cruise control, an oversight in our opinion.

Engine & Transmission

GMC Terrain buyers have a choice of three different powerplants. Standard is a 1.5-liter turbocharged 4-cylinder with 170 horsepower, a solidly competitive engine within its class that delivers good fuel economy and decent acceleration. The upgrade from that is a 2.0-liter turbocharged 4-cylinder with 252 horsepower that turns the Terrain into something just short of a hot rod. In between the two is a 1.6-liter turbodiesel 4-cylinder with 137 horsepower but 240 lb-ft of torque, nearly as much as the 2.0-liter gasoline turbo. All three engines can be paired with front- or all-wheel drive (FWD, AWD). The two gasoline engines come with a 9-speed automatic, while the diesel comes with a 6-speed. Fuel economy ranges from adequate in the 2.0-liter, to good with the 1.5-liter, to excellent with the diesel.

1.5-liter turbocharged inline-4
170 horsepower @ 5,600 rpm
203 lb-ft of torque @ 2,000-4,000 rpm
EPA city/highway fuel economy: 26/30 mpg (FWD), 24/28 mpg (AWD)

2.0-liter turbocharged inline-4
252 horsepower @ 5,500 rpm
260 lb-ft of torque @ 2,500-4,500 rpm
EPA city/highway fuel economy: 22/28 mpg (FWD), 21/26 mpg (AWD)

1.6-liter turbocharged diesel inline-4
137 horsepower @ 3,750 rpm
240 lb-ft of torque @ 2,000 rpm
EPA city/highway fuel economy: 28/39 mpg (FWD), 28/38 mpg (AWD)


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2018 GMC Terrain
KBB.com Consumer Reviews

3.9
Consumer Rating
Based on 70 Consumer Reviews
Write a Review
70%Recommend this vehicle
5
50%
5
50%
4
20%
4
20%
3
10%
3
10%
2
9%
2
9%
1
11%
1
11%
Value
3.9
Performance
3.9
Quality
3.9
Comfort
4.1
Reliability
4.0
Styling
4.3

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2018 GMC Terrain Styles

Style
Price
Combined Fuel Economy
Horsepower
Seating
Cargo Capacity
Engine
Towing Capacity
Curb Weight
Drivetrain
SL Sport Utility 4D
$13,399
28 MPG
170 @ 5600 RPM
5
63.3 cu ft
4-Cyl, 1.5 Liter
1500 lbs
3449 lbs
FWD
SLE Sport Utility 4D
$13,656
28 MPG
170 @ 5600 RPM
5
63.3 cu ft
4-Cyl, 1.5 Liter
1500 lbs
3449 lbs
FWD
SLT Diesel Sport Utility 4D
$14,144
32 MPG
137 @ 3750 RPM
5
63.3 cu ft
4-Cyl, Turbo Dsl, 1.6L
1500 lbs
3658 lbs
FWD
SLT Sport Utility 4D
$14,860
28 MPG
170 @ 5600 RPM
5
63.3 cu ft
4-Cyl, 1.5 Liter
1500 lbs
3487 lbs
FWD
SLE Diesel Sport Utility 4D
$14,275
32 MPG
137 @ 3750 RPM
5
63.3 cu ft
4-Cyl, Turbo Diesel, 1.6 Liter
1500 lbs
3815 lbs
AWD
Denali Sport Utility 4D
$17,470
N/A
252 @ 5500 RPM
5
63.3 cu ft
4-Cyl, Turbo, 2.0 Liter
3500 lbs
3801 lbs
AWD
See Full Specs for All 2018 GMC Terrain Styles
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2018 GMC Terrain Depreciation

A 2018 GMC Terrain has depreciated $7,868 or 39% in the last 3 years and has a current resale value of $11,804 and trade-in value of $9,369.

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2018 GMC Terrain
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2018 GMC Terrain Annual Depreciation

Year
Vehicle Depreciation*
Resale Value
Trade-In Value
2022
+ $2,121
$19,672
$17,071
2023
$2,919
$16,753
$14,189
2024
$4,212
$12,541
$9,953
Now
$737
$11,804
$9,369
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2-Year Forecasted Depreciation

*Depreciation for the last 12 months of the private party resale value.

2018 GMC Terrain Depreciation

Annual Depreciation is an estimation of what your vehicle's value might be over time based on an average of similar vehicles. Estimations are calculated by comparing Kelley Blue Book Private Party Values of vehicles similar to yours over time, as well as forecasts from Manheim Auction data comparing current and projected auction values against current Kelley Blue Book Private Party and Trade-In Values. This is not a guarantee of actual depreciation. Local weather conditions, market factors and driver performance will also impact your vehicle's actual depreciation.


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Specifications

Dimensions, Weights & Capacities

Curb Weight
3449 lbs.
Fuel Capacity
14.9 gallons
Front Head Room
40.0 inches
Front Leg Room
40.9 inches
Max Seating Capacity
5
Minimum Ground Clearance
6.9 inches
Overall Length
182.3 inches
Front Shoulder Room
57.2 inches
Towing Capacity, Maximum
1500 lbs.
Trunk or Cargo Capacity
63.3 cu.ft.
Turning Diameter
37.4 feet
Wheel Base
107.3 inches
Gross Vehicle Weight Rating (GVWR)
4464 lbs.
Payload Capacity
1146 lbs.

Exterior

Alloy Wheels
Available
HID Headlights
Available
Number of Doors
4 doors
Privacy Glass
Available

Fuel Economy

City
26 mpg
Highway
30 mpg
Combined
28 mpg

Mechanical

Drivetrain
FWD
Transmission Type
Automatic
9 speed
Available
Recommended Fuel
Premium
Hill Descent Control
Available

Performance

Horsepower
170 @ 5600 RPM
Torque
203 @ 2500 rpm
Engine
4-Cyl, 1.5 Liter

Warranty

Basic
3 years / 36000 miles
Powertrain
5 years / 60000 miles
Corrosion
6 years / 100000 miles

Entertainment

  • Bluetooth Streaming Audio

Interior

  • Leather-Wrapped Steering Wheel
  • Power Windows
  • 12V Power Outlet
  • Power Outlet
  • Steering Wheel Controls

Seating

  • Folding Rear Seat
  • Cloth Seats

Security

  • Alarm System

Technology

  • Bluetooth Wireless Technology
  • Cruise Control
  • Hands Free Phone
  • Navigation System
  • Remote Keyless Entry
  • Internet Access
  • Push-Button Engine Start
  • Smartphone Interface
  • Touch Screen Monitor
  • USB Port

2018 GMC Terrain Safety

2018 GMC Terrain Safety Technology

  • Child Door Locks
  • Child Seat Anchors
  • Driver Airbag
  • Passenger Airbag
  • Stability Control
  • Traction Control
  • Emergency & Security Services
  • Front Head Curtain Airbag
  • Front Side Airbag
  • Parental Control System
  • Rear Head Curtain Airbag
  • Rear View Camera
5.0

Crash Test Rating

Provided by the National Highway Traffic Safety Administration
Frontal Crash
5.0
Side Barrier
5.0
Rollover Rating
4.0
Side Crash
5.0

Compare to Similar Vehicles

Used 2018
GMC Terrain
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Chevrolet Equinox
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Subaru Forester
Used 2018
Honda CR-V
See Details
Price
$13,399
$12,667
$16,974
$16,569
KBB.com Rating
4.5
4.4
4.4
4.8
Consumer Rating
3.9
3.9
4.2
4.0
Fuel Economy
City 26/Hwy 30/Comb 28 MPG
City 26/Hwy 32/Comb 28 MPG
City 26/Hwy 32/Comb 28 MPG
City 25/Hwy 31/Comb 27 MPG
Fuel Type
Gas
N/A
N/A
N/A
Safety Rating
5.0
5.0
5.0
5.0
Seating Capacity5555
Basic Warranty
3 years or 36000 miles
3 years or 36000 miles
3 years or 36000 miles
3 years or 36000 miles
Horsepower
170 @ 5600 RPM
170 @ 5600 RPM
170 @ 5800 RPM
184 @ 6400 RPM
Engine
4-Cyl, 1.5 Liter
4-Cyl, Turbo, 1.5 Liter
4-Cyl, PZEV, 2.5 Liter
4-Cyl, i-VTEC, 2.4 Liter
Drivetrain
FWD
FWD
AWD
AWD

2018 GMC Terrain Rankings

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FAQs

Is the 2018 GMC Terrain a good vehicle?

Yes, the 2018 GMC Terrain is a good car, as reflected by its above-average Kelley Blue Book rating of 4.5 out of 5.

How much should a 2018 GMC Terrain cost?

Used 2018 GMC Terrain prices currently range from $13,399 for the SL Sport Utility 4D to $17,470 for the Denali Sport Utility 4D when purchasing from a dealership, depending on a range of factors like equipment, mileage, and condition.

What's the cheapest GMC Terrain?

The cheapest 2018 GMC Terrain is the SL Sport Utility 4D, with a Kelley Blue Book Fair Purchase Price of $13,399.

Is the 2018 GMC Terrain reliable?

The 2018 GMC Terrain is part of the 2nd-generation Terrain, which our owners give an above-average reliability rating of 4 out of 5.

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