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

How much does the 2021 Mercedes-Benz GLC cost?

Prices have softened 15.21% compared to this time last year, making it a favourable time to shop this model year.

There are 359 listings available, which suggests a modest amount of inventory for shoppers to compare.

Is the 2021 Mercedes-Benz GLC a good car?

Yes — the 2021 Mercedes-Benz GLC earns a 4.5/5 user rating and an 8/10 expert rating. The standout strength is Look and feel at 10/10.

Owners consistently praise its smooth ride, comfort, and advanced tech features, and many describe it as stylish and well equipped. That lines up with the GLC’s upscale cabin, polished driving dynamics, and premium-feeling everyday usability. For you, that means it makes the most sense if you want a compact luxury SUV that prioritises refinement, comfort, and a strong feature set over maximum cargo space or a more playful personality.

Good and great deals account for 31.5% of listings, which gives you a reasonable number of attractive options to consider.

Is the 2021 Mercedes-Benz GLC reliable?

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

The owner feedback points to a vehicle that feels dependable in daily use, with praise centred on comfort, smoothness, and useful technology that owners are happy to live with over time. The expert evaluation also describes the GLC as refined and responsive, which supports the impression that it is a vehicle you can count on for relaxed, consistent commuting and family duty. The cost-effectiveness commentary also notes that the GLC’s cabin quality and overall package help justify its price, which can matter when you’re thinking about long-term ownership value.

For used buyers, the main ownership risk is that luxury-car upkeep can be expensive, so you should budget carefully for maintenance and inspect service history closely.

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. If you want more convenience and a richer cabin experience, look for packages that add navigation, a larger touchscreen, a wireless phone charger, a panoramic sunroof, a 360-degree camera, and ambient lighting.
• Powertrain: The GLC 300 uses a 2.0-litre turbocharged four-cylinder with 255 horsepower and 273 lb-ft of torque, paired with a nine-speed automatic and 4MATIC all-wheel drive. It is tuned for a balance of refinement and responsiveness, with enough power for everyday driving and only occasional turbo lag from a stop.
• 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, so base vehicles may miss some of those features.
• 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 intuitive once you learn it, but you should test the controls and menu flow to make sure they suit you.
• Fuel efficiency: The base GLC 300 returns 11.3 L/100 km in the city, 8.5 on the highway, and 10.0 combined. In mixed driving, the observed average was 10.0 L/100 km.

Which 2021 Mercedes-Benz GLC trim should I buy?

The 2021 Mercedes-Benz GLC is offered in 3 trim levels: GLC 300, AMG GLC 43, 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 most efficient powertrain in the range. It suits you if you want the luxury feel without stepping into the higher running costs of the AMG models.
• AMG GLC 43: Choose this if you want a more potent powertrain and a sportier setup, including 20-inch wheels, adaptive air suspension, and sport seats. It is the right fit if performance matters more to you than value.
• AMG GLC 63 S: This is the top performance pick, adding the most powerful engine in the lineup along with the same performance-oriented upgrades as the 43. It suits you if outright speed is your priority and you are comfortable paying for it.

For safety equipment, remember that the most complete driver-assistance suite is tied to the Intelligent Drive Package, so verify whether a used example has it.

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

This is a moderate market for selective buyers, so it makes sense to shop carefully and compare listings.

• Deal availability: 31.5% of listings are priced as good or great deals.
• Inventory: There are 359 listings available.
• Price trend: Prices have softened 15.21% compared with last year.

If you find a listing below $34,462 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 $34,571 CAD sits slightly below last year's $40,774 CAD.

That softer pricing suggests the market has moved in buyers’ favour, which can make the GLC easier to purchase now than it was a year ago. For a future seller, that also means you should expect resale values to reflect the current cooling trend rather than the higher prices seen previously. Even so, the GLC’s premium image and strong owner satisfaction should help it remain appealing to used buyers.

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?

The 2021 Mercedes-Benz GLC 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 $2,700 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. That is worth checking during a test drive if you plan to use the vehicle in dense urban driving.

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:

• 31.5% of listings are priced as good or great deals.
• Price trend: Prices have softened 15.21% compared with last year.
• Owners rate it 4.5/5 — a strong satisfaction signal.
• The 2021 model year combines an upscale cabin, advanced infotainment, and a refined ride with a well-rounded compact luxury SUV character.

The bottom line: If you want the strongest mix of comfort, technology, and premium feel, the 2021 GLC is the one to target. If you are more price-sensitive, you can use the softer market and decent inventory to shop selectively for a well-equipped example, especially one with the safety and convenience packages you want.

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