Used 2021 GMC Terrain for Sale near Michigan

Compare 2021 GMC Terrain Trims

The 2021 GMC Terrain offers a range of trims from budget-friendly options to more luxurious models, all featuring efficient engines and versatile drivetrains.

• Starting at $17,023
• Best MPG/MPGe: 25 city / 30 hwy
• Most Popular: SLT AWD

Trim Overview

Prices updated weekly from CarGurus listings.

Quick Compare Table

Listing prices sourced from CarGurus — updated weekly. OEM specs from manufacturer data.

Missing data displayed as "—".

Trim Deep Dives

SLE FWD — "Who It's For"

The SLE FWD is the pick for shoppers who want a budget-friendly option without sacrificing essential features.

• Avg. market price: $17,023 (updated weekly)
• MPG/MPGe: 25 city / 30 hwy
• Inventory: 1,501 listings — widest selection in the lineup
• View SLE FWD listings

SLE AWD — "Who It's For"

The SLE AWD is the pick for shoppers who want all-wheel drive without a hefty price tag.

• Avg. market price: $18,481 (updated weekly)
• MPG/MPGe: 25 city / 28 hwy
• Inventory: 1,852 listings — widest selection in the lineup
• View SLE AWD listings

SLT FWD — "Who It's For"

The SLT FWD is the pick for shoppers who want a standard trim with added comfort features without going over budget.

• Avg. market price: $17,595 (updated weekly)
• MPG/MPGe: 25 city / 30 hwy
• Inventory: 783 listings
• View SLT FWD listings

SLT AWD — "Who It's For"

The SLT AWD is the pick for shoppers who want a sporty feel with all-wheel drive and premium features.

• Avg. market price: $18,733 (updated weekly)
• MPG/MPGe: 25 city / 28 hwy
• Inventory: 1,978 listings — widest selection in the lineup
• View SLT AWD listings

Denali FWD — "Who It's For"

The Denali FWD is the pick for shoppers who want luxury features in a standard configuration.

• Avg. market price: $25,194 (updated weekly)
• MPG/MPGe: 25 city / 30 hwy
• Inventory: 53 listings — lower availability; may limit negotiating room
• View Denali FWD listings

Denali AWD — "Who It's For"

The Denali AWD is the pick for shoppers who want a premium experience with trail-ready capability.

• Avg. market price: $22,983 (updated weekly)
• MPG/MPGe: 25 city / 28 hwy
• Inventory: 1,110 listings — widest selection in the lineup
• View Denali AWD listings

Trim Recommendations

Most Popular — SLT AWD

With 1,978 active listings, the SLT AWD is the clear volume leader in the lineup.

Browse SLT AWD listings

Best Budget Option — SLE FWD

At $17,023 avg market price — below the lineup median of $18,607 — it's the most accessible entry point.

Browse SLE FWD listings

Best for Fuel Economy — SLE FWD

The SLE FWD offers the best fuel economy in the lineup with 25/30 MPG/MPGe.

Browse SLE FWD listings

These recommendations are based on CarGurus' proprietary market data from October 1, 2026, CarGurus experts' opinions, and generative AI.

How much does the 2021 GMC Terrain cost?

Prices have softened 9.71% compared to this time last year, making it a favorable time to shop this model year.

There are 2,468 listings available, which gives you a solid pool to compare prices and conditions.

Is the 2021 GMC Terrain a good car?

Yes — the 2021 GMC Terrain earns a 5/5 user rating, which points to strong owner satisfaction. Drivers repeatedly praise its stylish interior, feature set, smooth ride, and fuel efficiency, and they also see it as a strong value for the money. For you, that makes it a sensible pick if you want a comfortable compact SUV that emphasizes everyday usability over sporty performance. With 33.5% of listings marked as good or great deals, there is still meaningful market opportunity if you shop carefully.

Is the 2021 GMC Terrain reliable?

Owners rate it 5/5, a strong signal of long-term satisfaction.

The owner feedback also emphasizes dependable everyday use, with repeated praise for the Terrain’s smooth ride, fuel efficiency, and overall value. That combination suggests you’re looking at a model that many drivers feel comfortable living with over time. For used buyers, the main long-term ownership risk is less about broad dissatisfaction and more about finding a well-kept example that avoids minor wear or neglected maintenance.

What should I look for when buying a used 2021 GMC Terrain?

At 74.8% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.

You should start with a vehicle history report so you can separate clean examples from those with prior damage. Then prioritize a thorough pre-purchase inspection, especially if the listing price looks unusually attractive. Focus on overall condition, repair quality, and signs of uneven wear, since those details matter more when a sizable share of the market has accident history.

Is now a good time to buy a used 2021 GMC Terrain?

This looks like a moderate, selective buyer’s market, so you can shop with some leverage if you stay disciplined.

• Deal availability: 33.5% of listings are priced as good or great deals.
• Inventory: There are 2,468 listings available.
• Price trend: Prices have softened 9.71% compared with last year.
• Clean inventory: 74.8% of listings are accident-free.

If you find a listing below $18,232, that's toward the low end of the year-round range and worth acting on quickly.

What is the 2021 GMC Terrain's resale value?

The current average of $18,232 sits slightly below last year's $20,191.

That price movement suggests the Terrain has already absorbed some depreciation, which can help future sellers if the market stabilizes. If you buy at the right price now, you may have less downside left than a shopper who paid closer to last year’s average. Strong demand for well-reviewed, well-equipped examples can also help support resale interest when it’s time to sell.

Vehicles with strong owner satisfaction ratings, like this model year's 5/5, tend to retain buyer demand, which supports resale value over time.

Should I buy a 2021 GMC Terrain or consider a different year?

If you're weighing the 2021 against nearby model years, here's how to think about it:

Choose the 2021 if:

• 33.5% of listings are priced as good or great deals.
• At 74.8% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
• Price trend: Prices have softened 9.71% compared with last year.
• Owners rate it 5/5 — a strong satisfaction signal.

Consider the 2022 if:

• At $21,692, the 2022 costs more than the current year's $18,232 average.
• It adds an AT4 trim with standard all-wheel drive and a more rugged look.

The bottom line: You should lean toward the 2021 if you want the better value and a strong owner-satisfaction profile. If you’re willing to pay more for the newer model year’s rugged AT4 option and updated positioning, the 2022 is the secondary path for buyers who prioritize that extra styling and hardware.

These recommendations are based on CarGurus' proprietary market data from September 29, 2026, CarGurus experts' opinions, and generative AI.