Used 2021 GMC Terrain for Sale nearLondon, ON

How much does the 2021 GMC Terrain cost?

Prices have softened 14.44% compared to this time last year, making it a favourable time to shop this model year.

There are 292 listings available, which suggests you have a reasonable amount of inventory to compare.

Is the 2021 GMC Terrain a good car?

Yes — 5/5 is a strong user rating for the 2021 GMC Terrain, and it lines up with the way owners describe it: stylish interior, strong feature set, smooth ride, and good fuel efficiency. The Terrain’s roomy cabin also makes it appealing if you want a compact SUV that feels practical for everyday use, while its premium-leaning feel helps it stand out from more basic rivals. If you want a comfortable, well-equipped SUV for commuting and family duty, it fits that brief well. With 33.6% of listings marked as good or great deals, the market also gives you some room to shop selectively.

Is the 2021 GMC Terrain reliable?

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

The owner feedback points to a dependable, trouble-free ownership experience, with drivers highlighting the Terrain’s value, smooth ride, and fuel efficiency over the long term. That kind of praise usually suggests you can count on it for everyday use without feeling like you’re taking on a high-maintenance vehicle. For used buyers, the main long-term risk is less about outright reliability and more about choosing a well-kept example that has been maintained properly.

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

This looks like a moderate, selective buyer’s market, so you can afford to be choosy without waiting for a perfect deal.

• Deal availability: 33.6% of listings are priced as good or great deals.
• Inventory: There are 292 listings available.
• Price trend: Prices have softened 14.44% compared with last year.

If you find a listing below $21,104 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 $21,547 CAD sits slightly below last year's $25,184 CAD.

That price movement suggests the Terrain has already absorbed a meaningful amount of depreciation, which can help future sellers if the market stabilises. If you buy at the right price now, you may have less downside left than you would with a vehicle that is still dropping quickly. The Terrain’s strong owner satisfaction can also help support demand when it is 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:

• 33.6% of listings are priced as good or great deals.
• Price trend: Prices have softened 14.44% compared with last year.
• Owners rate it 5/5 — a strong satisfaction signal.

Consider the 2022 if:

• At $24,505 CAD, the 2022 costs more than the current year's $21,547 CAD average.
• It adds an AT4 trim with standard all-wheel drive and a more rugged appearance.

The bottom line: The 2021 is the better starting point if you want the strongest value and a lower entry price, especially since the market already shows meaningful discounting. If you are willing to spend more for the 2022’s added trim and rugged styling, that can make sense, but price-sensitive buyers should focus on the 2021 and shop for one of the better-priced listings.

These recommendations are based on CarGurus' proprietary market data from October 20, 2026, CarGurus experts' opinions, and generative AI.