Used 2021 GMC Terrain for Sale near California

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 $16,316
• 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: $16,316 (updated weekly)
• MPG/MPGe: 25 city / 30 hwy
• Inventory: 1,486 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: $18,089 (updated weekly)
• MPG/MPGe: 25 city / 28 hwy
• Inventory: 1,879 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 touch of luxury without going over budget.

• Avg. market price: $17,732 (updated weekly)
• MPG/MPGe: 25 city / 30 hwy
• Inventory: 822 listings
• View SLT FWD listings

SLT AWD — "Who It's For"

The SLT AWD is the pick for shoppers who want sporty features and all-wheel drive in one package.

• Avg. market price: $18,203 (updated weekly)
• MPG/MPGe: 25 city / 28 hwy
• Inventory: 1,960 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 premium features and a refined driving experience.

• Avg. market price: $26,900 (updated weekly)
• MPG/MPGe: 25 city / 30 hwy
• Inventory: 61 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 top-tier features and off-road capability.

• Avg. market price: $20,801 (updated weekly)
• MPG/MPGe: 25 city / 28 hwy
• Inventory: 1,120 listings — widest selection in the lineup
• View Denali AWD listings

Trim Recommendations

Most Popular — SLT AWD

With 1,960 active listings, the SLT AWD is the clear volume leader in the lineup.

Browse SLT AWD listings

Best Budget Option — SLE FWD

At $16,316 avg market price — below the lineup median of $18,146 — it's the most accessible entry point.

Browse SLE FWD listings

Best for Fuel Economy — SLE FWD

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

Browse SLE FWD listings

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

How much does the 2021 GMC Terrain cost?

Prices have softened 11.28% compared to this time last year, making it a favorable time to shop this model year.

There are 2,415 listings available, which suggests you have a solid amount of inventory to compare.

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 consistently praise its stylish interior, feature set, smooth ride, and fuel efficiency. The Terrain’s use-case appeal is strongest if you want a compact SUV that feels a bit more premium than many rivals while still serving as an everyday commuter with a comfortable cabin.

With 34.3% of listings marked as good or great deals, you have a meaningful chance to find attractive pricing.

Is the 2021 GMC Terrain reliable?

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

The owner feedback also emphasizes value, smooth driving manners, and a generally dependable ownership experience, which are all encouraging signs if you want a used SUV you can count on. For used buyers, that kind of satisfaction lowers the odds of unpleasant long-term surprises, though condition and maintenance history still matter.

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

At 74% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.

You should run a vehicle history report on any promising listing and prioritize a pre-purchase inspection before you commit. Focus closely on body condition, signs of prior repair, and whether the cabin and technology features match the seller’s description.

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 patiently and still find worthwhile options.

• Deal availability: 34.3% of listings are priced as good or great deals.
• Inventory: There are 2,415 listings available.
• Price trend: Prices have softened 11.28% compared with last year.
• Clean inventory: 74.0% of listings are accident-free.

If you find a listing below $17,780, 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 $17,780 sits slightly below last year's $20,041.

That price movement suggests the Terrain has already absorbed a meaningful amount of depreciation, which can help future sellers if the market stabilizes. If you buy at a disciplined price today, you may have a better chance of limiting your loss when it’s time to sell. Strong owner satisfaction can also help keep demand steady in the used market.

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:

• 34.3% of listings are priced as good or great deals.
• At 74% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
• Price trend: Prices have softened 11.28% compared with last year.
• Owners rate it 5/5 — a strong satisfaction signal.

Consider the 2022 if:

• At $21,088, the 2022 costs more than the current year's $17,780 average.
• It adds an AT4 trim with standard all-wheel drive and rugged styling.

The bottom line: If you want the better value, the 2021 is the stronger buy because it combines lower pricing with strong owner satisfaction. If you’re willing to spend more for a newer model and a more rugged trim option, the 2022 is the better secondary path.

How does the 2021 GMC Terrain compare to the 2021 Chevrolet Equinox?

Read our full side-by-side expert comparison here.

These recommendations are based on CarGurus' proprietary market data from October 27, 2026, CarGurus experts' opinions, and generative AI.