Used 2021 GMC Terrain for Sale nearRichmond Hill, ON

How much does the 2021 GMC Terrain cost?

Prices have softened 13.35% compared to this time last year, making it a favourable time to shop this model year.

There are 293 listings available, which gives you a decent amount of choice in the used market.

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. That makes it a good fit if you want a compact SUV that feels a bit more upscale and easy to live with rather than one focused on maximum cargo space or performance. With 35.8% of listings marked as good or great deals, you have some room to shop selectively.

Is the 2021 GMC Terrain reliable?

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

The user feedback also points to a dependable, trouble-free ownership experience, with owners highlighting the Terrain’s smooth ride and overall value. That kind of response suggests you can count on it for everyday use if you choose a well-kept example. For used buyers, the main long-term ownership risk is less about outright reliability and more about finding one 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 compare listings carefully before committing.

• Deal availability: 35.8% of listings are priced as good or great deals.
• Inventory: There are 293 listings available.
• Price trend: Prices have softened 13.35% compared with last year.

If you find a listing below $21,025 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 $21,337 CAD sits slightly below last year's $24,626 CAD.

That price movement suggests the Terrain has already absorbed a meaningful amount of depreciation, which can help future resale stability if you buy at the right price. If you pay close to the current average, your downside is lower than it would have been a year ago. Strong demand for well-equipped compact SUVs can also help support resale, especially for examples with desirable features and clean history.

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:

• 35.8% of listings are priced as good or great deals.
• Price trend: Prices have softened 13.35% compared with last year.
• Owners rate it 5/5 — a strong satisfaction signal.

Consider the 2022 if:

• At $23,994 CAD, the 2022 costs more than the current year's $21,337 CAD average.
• It adds the AT4 trim with a more rugged look and standard all-wheel drive.

The bottom line: Choose the 2021 if you want the better value and a more affordable entry into the Terrain lineup. Consider the 2022 only if you specifically want the newer styling and AT4 appearance, but price-sensitive buyers will likely find the 2021 the smarter buy.

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 November 10, 2026, CarGurus experts' opinions, and generative AI.