Extended warranty worthiness profile

2018 GMC Terrain

Broad repair planning ranges plus reported complaint, recall and manufacturer communication signals. Reports describe submitted cases and do not measure the probability of failure.

213complaint reports

5recall campaigns

1,342manufacturer communications

6leading reported components

Animated diagnostic view representing the 2018 GMC Terrain

Model-year reading

What the 2018 record can and cannot say

Compared with other GMC Terrain years here, the 2018 total is 80 above the median year in this model file. Its raw count is 213, with no denominator for vehicles sold.

At 65 reports, Service Brakes is the most common displayed tag. The 30.5% share describes submitted complaints only; it does not describe the fleet.

Engine replacement or major internal repair provides the strongest parts-only stress test at a $7,000 midpoint. Local labor raises the bill, while claim rules can lower what the plan actually pays.

Vehicle configuration

2018 EPA specification range

The official dataset contains 6 matched configurations for this model year. The range reflects trim and drivetrain choices, not changes to the complaint count.

Vehicle classSmall SUV

Fuel choicesDiesel and Gasoline

Drive layoutsAll-wheel drive and Front-wheel drive

Engine range1.5 to 2 L; 4 cylinders

EPA efficiency23 to 32 mpg

Transmission typesAutomatic

EPA figures vary by configuration. Confirm the exact engine, drive layout and fuel system from the VIN or original window sticker. Source: FuelEconomy.gov vehicle data, updated 2026-06-16.

Estimated repair bills

Major repair cost range

Parts and labor benchmarks combined with an independent-shop labor model for Dallas, TX. Published model estimates calibrate supported repairs; model-year configuration data removes incompatible scenarios.

Repair	System	Estimated range
Engine replacement or major internal repair	Engine	$5,860-$16,847
Transmission replacement	Transmission	$3,492-$11,122
Transfer case replacement	Driveline	$2,044-$8,129
Turbocharger replacement	Turbo and Supercharger	$1,520-$6,465
Head gasket replacement	Engine	$2,286-$3,619
Timing chain replacement	Engine	$1,895-$2,968
Catalytic converter replacement	Exhaust and emissions	$2,241-$2,517
Steering rack replacement	Steering	$2,164-$2,584
Strut and control arm repair	Suspension	$946-$4,495
Fuel injector set replacement	Fuel System	$772-$4,607

Compare years

Other GMC Terrain model years

202512 reports · 0 recalls 202447 reports · 1 recalls 202335 reports · 2 recalls 202276 reports · 4 recalls 202134 reports · 2 recalls 2020183 reports · 2 recalls 2019177 reports · 3 recalls 2018213 reports · 5 recalls 2017133 reports · 1 recalls 2016149 reports · 2 recalls 2015295 reports · 3 recalls

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