Used 2020 Mercedes-Benz GLS for Sale near Ontario

How much does the 2020 Mercedes-Benz GLS cost?

Prices have softened 16.28% compared to this time last year, making it a favourable time to shop this model year.

There are 49 listings available, which gives you a modest amount of choice in the used market.

Is the 2020 Mercedes-Benz GLS a good car?

Yes — 5/5 is a strong user rating for the 2020 Mercedes-Benz GLS. The overview points to a roomiest-in-lineup luxury SUV with three rows of seating, up to 2,400 litres of cargo space, and a comfort-first cabin that still adds a measure of off-road capability. It also brings a tech-forward interior and generous standard equipment, which makes it especially appealing if you want a family-focused luxury SUV rather than just a bigger Mercedes. With 32.7% of listings marked as good or great deals, you have a decent chance of finding a competitive offer.

Is the 2020 Mercedes-Benz GLS reliable?

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

The overview suggests a well-equipped, comfort-oriented SUV with thoughtful features such as power-folding third-row seats, power-adjustable second-row seats, and a broad standard equipment list. For used buyers, the main long-term ownership risk is less about outright capability and more about the complexity that can come with a large, highly featured luxury SUV.

Is now a good time to buy a used 2020 Mercedes-Benz GLS?

This looks like a moderate, selective buyer’s market, so you can shop carefully without expecting every listing to be a bargain.

• Deal availability: 32.7% of listings are priced as good or great deals.
• Inventory: There are 49 listings available.
• Price trend: Prices have softened 16.28% compared with last year.

If you find a listing below $51,832 CAD, that's toward the low end of the year-round range and worth acting on quickly.

What is the 2020 Mercedes-Benz GLS's resale value?

The current average of $51,832 CAD sits slightly below last year's $61,914 CAD.

That softer pricing can help you buy more SUV for the money today, but it also means future resale expectations should stay grounded. If you purchase near the current average, you may have less room for appreciation than a buyer who entered the market before prices eased. Even so, the GLS's strong equipment list and family-friendly appeal should help it remain attractive to shoppers looking for a large luxury SUV.

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 2020 Mercedes-Benz GLS or consider a different year?

If you're weighing the 2020 against nearby model years, here's how to think about it:

Choose the 2020 if:

• 32.7% of listings are priced as good or great deals.
• Price trend: Prices have softened 16.28% compared with last year.
• Owners rate it 5/5 — a strong satisfaction signal.

Consider the 2021 if:

• At $67,457 CAD, the 2021 costs more than the current year's $51,832 CAD average.
• It adds an S-Class-like luxury focus with even more emphasis on comfort and prestige.

The bottom line: The 2020 is the better value if you want the GLS experience at a lower entry price and with more room to negotiate. If your budget stretches further and you want the newer model's more upscale positioning, the 2021 is the stronger premium choice.

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

The GLS is the larger, three-row option, while the Q8 is priced lower on average and has a higher share of good or great deals. If you need maximum passenger and cargo flexibility, the GLS is the more practical pick; if you want a lower-cost luxury SUV with more deal-heavy inventory, the Q8 is worth a look.

These recommendations are based on CarGurus' proprietary market data from November 10, 2026, CarGurus experts' opinions, and generative AI.