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FinalBid / Copart + IAAI

2018 GMC Terrain auction results: final bids and sale history

FinalBid holds 13,057 completed Copart and IAAI auctions for 2018 GMC Terrain. Across 12,924 recorded USD final bids, the median sold price is $4,400. Most of those cars were sold with front end. Half of the 7,362 verified odometer readings sit above 87,052 mi. The oldest auction in the archive closed in Apr 30, 2019, the newest in Nov 7, 2026. Auction results for the 2018 GMC Terrain at Copart and IAAI. Each sold lot below shows the final bid together with the damage, odometer and title that explain it, so you can see where a particular 2018 GMC Terrain belongs in the sold-price range rather than guessing at an average.

$3,650
Median final bid
$2,750–$4,550
Middle half
$5,600
Top 10% from
$14,750
Highest

Price index

Median final bid by month (line) and number of sales (bars), last 12 months.

$3,100 $3,470 $3,830 $4,200 Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Oct $3,475

Where they go

Buyer country of the winning bid, with the median price and model year each market buys. Shares of 2,136 sales with a known buyer country.

Buyer country Share Median final bid Median model year
United States
53%
$3,525 2018
Mexico
35%
$3,850 2018
Lebanon
6%
$3,300 2018
Georgia
3%
$3,375 2018
Azerbaijan
0.9%
$3,550 2018
Bahamas
0.3%
$3,775 2018
Belize
0.3%
$3,700 2018
Ukraine
0.2%
$3,600 2018
XX
0.2%
$5,000 2018
Canada
0.2%
$3,475 2018
Liberia
0.2%
$2,425 2018
Uzbekistan
0.2%
$2,725 2018
Other countries 1%

Country totals only. Individual lots do not show the buyer's country.

Copart vs IAAI

Copart 1,683 sold median $3,600
IAAI 1,042 sold median $3,800

Last 12 months · updated October 14, 2026

Terrain years

2027 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009

GMC models

Acadia C1500 Caballero Canyon Denali Envoy Hummer EV Jimmy Rally Safari Safari Cargo Savana Savana Cargo Savana Commercial Sierra 1500 Sierra 1500HD Sierra 1500HD Classic Sierra 2500 Sierra 2500HD Sierra 3500 Sierra 3500HD Sierra Denali Sierra Denali Classic Sierra EV Sonoma Suburban Terrain Typhoon Van Vandura Yukon Yukon Denali Yukon XL

Auction archive FAQ

How much does a 2018 GMC Terrain sell for at Copart and IAAI?

Over the last 12 months the median final bid for a 2018 GMC Terrain was $3,650; half of the 2,725 sales went for $2,750 to $4,550.

Where do 2018 GMC Terrain cars from US auctions go?

Among sales with a known buyer country: United States (53%), Mexico (35%), Lebanon (6%).

Is a 2018 GMC Terrain cheaper at Copart or IAAI?

Median final bid over the last 12 months: Copart $3,600, IAAI $3,800.

How much does a 2018 GMC Terrain sell for at auction?

The auction results listed here are the answer — every 2018 GMC Terrain lot carries its own final bid. Read the range and place your car inside it instead of trusting one figure.

What pushes a 2018 GMC Terrain final bid to the bottom of the range?

Water and fire losses, missing keys, deployed airbags and a branded title. Any two of those together usually explain a sold price that looks improbably low.

VIN history beyond the auction

Look past the final bid on any 2018 GMC Terrain

Title brands, accident reports and odometer entries: the VIN history behind any auction lot.

Example VIN history →