GMC Terrain exterior
Image: Auto Reliability Index
Gasoline · SLT trim

2018 GMC Terrain SLT

52.9% depreciation ($15,775)

2018 GMC Terrain SLT has a median resale price of $15,545 against an original MSRP of $31,320, which works out to 52.9% depreciation across 50 analyzed listings. It ranks 2 of 5 trims by value retention for this model year. This trim is listed with gas and front wheel drive.

Depreciation Details

MSRP (When New)
$31,320
Median Resale Price
$15,545
Depreciation
52.9%
Listings Analyzed
50

How SLT Compares to Other 2018 Trims

Lower depreciation means stronger resale retention. The SLT ranks 2 of 5 trims with enough listing data for this model year.

TrimMSRPMedian ResaleDepreciationListings
SLE$27,820$13,78852.7%93
SLTthis trim$31,320$15,54552.9%50
Denali$37,520$17,34057.3%45
SLT Diesel$34,165$12,65060.3%5
SLE Diesel$31,590$12,39461.9%7

Specifications

Engine Typegas
Horsepower170 hp
Torque203 lb-ft
Transmission9-speed shiftable automatic
Drivetrainfront wheel drive
City MPG26 mpg
Highway MPG30 mpg
Combined MPG28 mpg
Engine Size1.5
CylindersI4
Body TypeSUV
Doors5
Seats5
Curb Weight3,487 lbs
Cargo Capacity29.6
Fuel Tank14.9

Frequently Asked Questions

How much has the 2018 GMC Terrain SLT depreciated?

The 2018 GMC Terrain SLT shows 52.9% depreciation from its original MSRP. In dollar terms, the median listing price is $15,545 compared with an original MSRP of $31,320. This is based on 50 current used-market listings, so it should be read as market research rather than a guaranteed trade-in value.

Is the SLT trim a good value for this model year?

The value case depends on how its depreciation compares with neighboring trims and whether the equipment matters to you. Among the 5 trims with enough listing data, it ranks 2 by lowest depreciation. A lower depreciation percentage usually means stronger resale value, while a larger dollar discount can be attractive if you care more about purchase price than future resale. Compare mileage, condition, accident history, and options before treating the trim ranking as a final buying decision.

What specs are matched for the 2018 GMC Terrain SLT?

The matched spec record lists gas, front wheel drive, 9-speed shiftable automatic, 28 combined MPG. The spec match is used only when it can be tied to this model year and trim without an ambiguous join. If source records disagree, the page favors the depreciation data and avoids presenting unsupported mechanical details as fact.