Used 2021 Mercedes-Benz GLC for Sale near Thornhill, ON

How much does the 2021 Mercedes-Benz GLC cost?

Prices have softened 16.90% compared to this time last year, making it a favourable time to shop this model year.

There are 357 listings available, which suggests healthy inventory for shoppers comparing options.

Is the 2021 Mercedes-Benz GLC a good car?

Yes — the 2021 Mercedes-Benz GLC earns 4.5/5 from owners and 8/10 from our experts. The standout strength is Look and feel at 10/10.

Owners consistently praise its smooth ride, comfort, and advanced tech features. The GLC also comes across as stylish and well equipped, which fits its role as a compact luxury SUV for you if you want refinement, useful technology, and an upscale cabin in a practical package. Good and great deals account for 34.5% of listings, which gives you some room to shop selectively.

Is the 2021 Mercedes-Benz GLC reliable?

Owners rate it 4.5/5, a strong signal of long-term satisfaction.

Owner feedback points to a dependable, trouble-free ownership experience for many drivers, with praise centred on comfort, useful features, and the sense that the vehicle feels well equipped over time. The expert drive notes also describe the powertrain as generally responsive and refined, which supports confidence in day-to-day use. For used buyers, the main long-term ownership risk is that some shoppers report high maintenance costs, so a careful service-history check matters.

What should I look for when buying a used 2021 Mercedes-Benz GLC?

Key things to evaluate:

• Trim level: The entry-level GLC 300 includes 19-inch alloy wheels, LED headlights, a power liftgate, synthetic leather upholstery, power-adjustable front seats, heated front seats, dual-zone climate control, dual USB ports, a fully digital instrument panel, and the MBUX infotainment system. Higher trims add more equipment, including a more potent powertrain, adaptive air suspension, sport seats, and additional luxury and convenience features.
• Powertrain: The GLC 300 uses a 2.0-litre turbocharged four-cylinder engine with 255 horsepower and 273 lb-ft of torque, paired with a nine-speed automatic transmission and 4MATIC all-wheel drive. It is described as responsive and balanced, with enough power for most buyers.
• Safety package: To get the best safety tech, you need the Intelligent Drive Package, which adds automatic emergency braking, forward collision warning, blind-spot monitoring, rear cross-traffic alert, dynamic cruise control, and lane departure warning. Parking sensors and hands-free parking assist are part of the Premium Plus Package.
• Infotainment: The Premium Package brings MBUX with a 10.25-inch centre touchscreen, a centre console touch controller, advanced voice control, Apple CarPlay, and Android Auto. The system is described as intuitive once you get used to it.
• Fuel efficiency: The base GLC 300 returns 11.3 L/100 km in the city, 8.5 L/100 km on the highway, and 10.0 L/100 km combined. The AMG GLC 43 uses 13.1 L/100 km city, 9.6 L/100 km highway, and 11.6 L/100 km combined, while the AMG GLC 63 S uses 15.7 L/100 km city, 10.9 L/100 km highway, and 13.5 L/100 km combined.

Which 2021 Mercedes-Benz GLC trim should I buy?

The 2021 Mercedes-Benz GLC is offered in 4 trim levels: GLC 300, AMG GLC 43, AMG GLC 63, AMG GLC 63 S.

Here's the short version:

• GLC 300: This is the best-value choice for most shoppers because it delivers the core GLC experience: a refined ride, strong standard equipment, and the balanced 2.0-litre turbocharged four-cylinder powertrain. If you want the luxury feel without chasing performance extras, this is the trim to start with.
• AMG GLC 43: Choose this if you want a more potent powertrain along with 20-inch wheels, adaptive air suspension, and sport seats. It suits you if performance matters more than keeping running costs and complexity down.
• AMG GLC 63: This trim builds on the AMG 43’s upgrades and adds more of the same performance-focused equipment and package offerings. It is for buyers who want a more serious AMG character and are willing to pay for it.
• AMG GLC 63 S: This is the top performance choice, adding the most powerful engine in the range plus the Premium Rear Seat Package with heated rear outboard seats, three-zone automatic climate control, and rear side window sunshades. It suits you if you want maximum performance and the most complete luxury setup.

For safety, Canadians need the Intelligent Drive Package to get the GLC’s best driver-assistance features, while parking sensors and hands-free parking assist come with the Premium Plus Package.

Is now a good time to buy a used 2021 Mercedes-Benz GLC?

This is a moderate market for selective buyers, so you can shop carefully and still find worthwhile listings.

• Deal availability: 34.5% of listings are priced as good or great deals.
• Inventory: There are 357 listings available.
• Price trend: Prices have softened 16.90% compared with last year.

If you find a listing below $33,456 CAD, that's toward the low end of the year-round range and worth acting on quickly.

What is the 2021 Mercedes-Benz GLC's resale value?

The current average of $33,456 CAD sits slightly below last year's $40,259 CAD.

That price movement suggests the market has already adjusted downward, which can make the GLC more attractive to used buyers today. For a future seller, it also means you may face a softer resale environment if prices continue to normalise from prior highs. Even so, the model’s broad appeal and strong owner satisfaction should help support demand over time.

Vehicles with strong owner satisfaction ratings, like this model year's 4.5/5, tend to retain buyer demand, which supports resale value over time.

Is the 2021 Mercedes-Benz GLC safe?

It earns an 8/10 safety score from our experts.

To equip the GLC with its best safety tech, such as automatic emergency braking, forward collision warning, blind-spot monitoring, rear cross-traffic alert, dynamic cruise control, and lane departure warning, Canadians need to purchase the Intelligent Drive Package. Parking sensors and hands-free parking assist are part of the Premium Plus Package.

We found the parking and proximity sensors to be overly sensitive, which can be distracting in tight traffic situations, though they can be deactivated if desired.

Should I buy a 2021 Mercedes-Benz GLC 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:

• 34.5% of listings are priced as good or great deals.
• Price trend: Prices have softened 16.90% compared with last year.
• Owners rate it 4.5/5 — a strong satisfaction signal.
• The 2021 stands out for its polished mix of comfort, upscale cabin quality, and advanced infotainment and safety technology.

The bottom line: If you want the most balanced version of the GLC formula, the 2021 model is a strong pick because it combines comfort, technology, and a premium feel at a more favourable price than it carried a year ago. If you are especially price-sensitive, keep shopping the market for the best deal, but the 2021 remains a compelling choice when you find one with the right equipment and service history.

How does the 2021 Mercedes-Benz GLC compare to the 2021 BMW X3?

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

These recommendations are based on CarGurus' proprietary market data from November 4, 2026, CarGurus experts' opinions, and generative AI.