Used 2021 GMC Terrain for SaleNationwide

How much does the 2021 GMC Terrain cost?

Prices have softened 17.40% compared to this time last year, making it a favourable time to shop this model year.

There are 302 listings available, which suggests you have a reasonable 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, smooth ride, and strong value, and many also like its feature set and fuel efficiency. For you, that makes it a sensible choice if you want a practical compact SUV that feels a bit more premium than many rivals. With 24.5% of listings marked as good or great deals, there is still some room to shop carefully.

Is the 2021 GMC Terrain reliable?

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

The owner feedback also highlights dependable day-to-day use, with drivers describing the Terrain as a vehicle they can count on for a smooth, trouble-free ownership experience. Comments about its value and fuel efficiency reinforce that it fits well into long-term use for many shoppers. For used buyers, the main ownership risk is less about satisfaction and more about finding one that has been maintained properly over time.

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: 24.5% of listings are priced as good or great deals.
• Inventory: There are 302 listings available.
• Price trend: Prices have softened 17.40% compared with last year.

If you find a listing below $21,254 CAD, 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 $21,327 CAD sits slightly below last year's $25,820 CAD.

That drop suggests the market has already adjusted downward, which can make the Terrain easier to buy now but may also limit upside for a future seller. If you plan to resell later, the current pricing trend means you should be realistic about depreciation and focus on buying well. A clean history, strong maintenance records, and desirable equipment will matter more when it comes time to list it again.

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:

• 24.5% of listings are priced as good or great deals.
• Price trend: Prices have softened 17.40% compared with last year.
• Owners rate it 5/5 — a strong satisfaction signal.

Consider the 2022 if:

• At $24,869 CAD, the 2022 costs more than the current year's $21,327 CAD average.
• It adds an AT4 trim with standard all-wheel drive and rugged styling.

The bottom line:
Choose the 2021 if you want the better value and are comfortable with its simpler, efficiency-focused setup. If you are willing to pay more for the 2022’s added trim variety and all-wheel-drive availability, that newer year may suit you better, but price-sensitive buyers will likely find the 2021 the smarter buy.

These recommendations are based on CarGurus' proprietary market data from September 22, 2026, CarGurus experts' opinions, and generative AI.