Used Mercedes-Benz GLS for Sale near Alexandria, ON

How much does the Mercedes-Benz GLS cost in today's market?

Used Mercedes-Benz GLS prices span a wide range depending on model year. Here's what the market looks like right now:

The Mercedes-Benz GLS's current nationwide average price is $70,839 CAD, and its lowest point over the past year was $68,280 CAD. Recently, prices have come down for the 2023, 2024, and 2025 models, making now a good time to shop recent model years.

Is the Mercedes-Benz GLS a good car?

Yes — the Mercedes-Benz GLS is a strong choice if you want a luxury three-row SUV with a comfort-first character and a premium cabin. The all-generations owner rating is 4.7/5 across every model year in the data.

Owners consistently praise the GLS for its luxurious comfort, smooth ride, and impressive performance. They also frequently highlight the high-quality craftsmanship and premium driving experience, along with the spacious, family-friendly layout.

Expert reviews rate the 2024 and 2021 models among the highest across all years.

The main trade-offs called out by experts are fuel economy, third-row access, and touch-sensitive controls, especially in recent model years with expert coverage.

32.6% of listings are priced as good or great deals.

Are Mercedes-Benz GLS models reliable?

Owners consistently praise the GLS for its comfort, smooth ride, and strong performance, and expert coverage reinforces its premium cabin and refined driving character. Across the model years in the data, the GLS also earns praise for craftsmanship and a high-end feel.

• Owners rate the Mercedes-Benz GLS between 4.5 and 5 out of 5 stars across all model years in the data.

For used buyers, long-term ownership risk is shaped more by upkeep costs and luxury-SUV complexity than by owner satisfaction.

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

Key things to evaluate:

• Safety package: Mercedes’s innovative Pre-Safe and Crosswind Assist technologies, plus Car-to-X Communication, front and rear parking sensors, and a surround-view camera system.
• Infotainment: Mercedes-Benz User Experience (MBUX) with dual 12.3-inch displays, wireless Apple CarPlay and Android Auto, navigation with augmented reality enhancement, and a Burmester surround-sound system with Dolby Atmos technology.
• Fuel efficiency: It’s rated by Natural Resources Canada at 11.3 litres per 100 kilometres combined, but with the standard Dynamic Select system in the Comfort driving mode for most of the test drive we observed 12.1 L/100 km on our mountainous evaluation route.

Which Mercedes-Benz GLS trim should I buy?

The 2026 Mercedes-Benz GLS offers these trims:

• GLS 450: The best-value trim for most buyers, with a turbocharged 3.0-litre inline-six, 375 horsepower, 369 pound-feet of torque, a nine-speed automatic transmission, standard 4Matic all-wheel drive, Airmatic adaptive suspension, heated front seats, MB-Tex upholstery, a sunroof, dual 12.3-inch displays with MBUX touchscreen functionality, navigation, a Burmester surround sound stereo, SiriusXM, nine USB-C ports, wireless charging, power-folding third-row seats, power-adjustable second-row seats, and 19-inch wheels.
• GLS 580: Adds more power and a higher-output V8 option for buyers who want stronger performance and more opulence.
• AMG GLS 63: Brings the performance-focused AMG version with additional style and capability.
• Maybach GLS 600: The most luxurious trim, aimed at buyers who want the highest level of prestige and comfort.

What Mercedes-Benz GLS do most buyers choose?

The Mercedes-Benz GLS years with the most listings are 2020, 2022, and 2021.

These higher-volume years tend to be the easiest places to shop because you get more inventory to compare, which can help you find the right trim, colour, and price. They also often attract more attention from shoppers, so the best examples can move quickly.

What is the Mercedes-Benz GLS's resale value?

Most GLS model years are showing notable year-over-year price declines, which can create better opportunities for used buyers. The steepest drops are concentrated in the newer and higher-priced years, while the smaller changes are clustered among the older and mid-cycle models. That pattern suggests you may find stronger value in the current used market than you would in a steadier pricing environment.

The 2021, 2022, and 2019 model years have held their value best, with the smallest year-over-year price changes.

Is the Mercedes-Benz GLS safe?

• 2026: 7/10
• 2024: 10/10
• 2022: 6/10
• 2021: 9/10

Nearly 40 safety and driver assistance systems appear on the 2026 GLS’s standard equipment list, including Mercedes’s innovative Pre-Safe and Crosswind Assist technologies.

For the safest used buy, the 2024 model posts the highest confirmed score of 10/10.

Should I buy a used Mercedes-Benz GLS now or wait for the next model?

Buy now if:

• Price trend: The 2025 model is at −15.42% versus a year ago, and the 2024 model is at −28.3%.
• Deal availability: The 2025 model has 38.9% good and great deals, and the 2024 model has 30%.
• Sweet-spot year: The 2020 model has the most listings at a current average price of $54,111 CAD. The Mercedes-Benz GLS offers a quiet and comfortable cabin with a premium, family-focused character.

Consider waiting if:

• Powertrain/efficiency: A turbocharged 3.0-litre inline-six-cylinder engine provides the 2026 GLS 450’s motive force with a bit of mild-hybrid assist. The powertrain supplies 375 horsepower and 369 pound-feet of torque, and it’s coupled with a nine-speed automatic transmission and standard 4Matic all-wheel-drive (AWD).
• Tech: Wireless Apple CarPlay and Android Auto and a navigation system with augmented reality enhancement are standard, and online music access is part of the Mercedes-Benz Digital Extras connected services.
• Safety: Nearly 40 safety and driver assistance systems appear on the 2026 GLS’s standard equipment list, including Mercedes’s innovative Pre-Safe and Crosswind Assist technologies.

If you're buying used today, the 2020 model year offers the best mix of value and availability. If you want the latest tech and features, it may be worth waiting for the next model year's inventory to build up.

How does the 2020 Mercedes-Benz GLS compare to the 2020 Audi Q8?

These recommendations are based on CarGurus' proprietary market data from October 21, 2026, CarGurus experts' opinions, and generative AI.