Used 2020 Mercedes-Benz GLS for SaleNationwide

How much does the 2020 Mercedes-Benz GLS cost?

Prices have softened 16.18% compared to this time last year, making it a favourable time to shop this model year.

There are 52 listings available, which gives you a useful amount of inventory to compare before you buy.

Is the 2020 Mercedes-Benz GLS a good car?

Yes — the 2020 Mercedes-Benz GLS earns a 5/5 user rating, which supports a strong case for shoppers who want a roomy, three-row luxury SUV with up to 2,400 litres of cargo space. The overview also points to a family-focused layout, a comfort-first cabin, and a blend of luxury-sedan refinement with some off-road capability, so it suits you well if space and comfort matter most. With 30.8% of listings marked as good or great deals, you have a decent chance of finding a competitively priced example.

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 generous standard equipment. For used buyers, the main long-term ownership risk is that a large, complex luxury SUV can be costly to maintain if it has been neglected.

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 and still find worthwhile listings.

• Deal availability: 30.8% of listings are priced as good or great deals.
• Inventory: There are 52 listings available.
• Price trend: Prices have softened 16.18% compared with last year.

If you find a listing below $52,456 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 $52,456 CAD sits slightly below last year's $62,582 CAD.

That price movement suggests the market has already adjusted downward, which can make future resale more sensitive to condition, mileage, and equipment. If you buy well now, you may have less depreciation pressure than someone who paid closer to last year’s average. Well-kept examples with desirable features should still appeal to shoppers looking for a spacious 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:

• 30.8% of listings are priced as good or great deals.
• Price trend: Prices have softened 16.18% compared with last year.
• Owners rate it 5/5 — a strong satisfaction signal.

Consider the 2021 if:

• At $68,492 CAD, the 2021 costs more than the current year's $52,456 CAD average.
• It adds an S-Class-like luxury focus with even more emphasis on comfort.

The bottom line: The 2020 is the better value if you want the GLS experience at a lower entry price and with solid deal availability. If you want the newer-year luxury positioning and are comfortable paying more, the 2021 is the premium path; if you’re price-sensitive, the 2020 is the smarter buy.

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

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