Used 2020 Mercedes-Benz GLS for Sale nearSaint Paul, MN

How much does the 2020 Mercedes-Benz GLS cost?

Prices have softened 16.13% compared to this time last year, making it a favorable time to shop this model year.

There are 814 listings available, which gives you a meaningful amount of inventory to compare.

Is the 2020 Mercedes-Benz GLS a good car?

Yes — the 2020 Mercedes-Benz GLS earns a 5/5 user rating, which points to strong owner satisfaction. It stands out as the roomiest vehicle in Mercedes-Benz’s lineup, with three rows of seating for six or seven people and up to 94 cubic feet of cargo space. It also blends S-Class-like comfort with some off-road capability, making it a strong fit if you want a large, upscale SUV with a polished ride and a long list of standard features. With 38.3% of listings marked as good or great deals, you have some room to shop selectively.

Is the 2020 Mercedes-Benz GLS reliable?

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

The 2020 GLS is described as a luxury SUV with a strong emphasis on comfort, space, and standard equipment, including all-wheel drive, air suspension, and advanced driver-assist features. Its cabin quality and technology are major strengths, even if some touch-sensitive controls can be frustrating. For used buyers, the main long-term ownership risk is making sure the vehicle has been maintained carefully, since a complex luxury SUV can become expensive if deferred maintenance has piled up.

What should I look for when buying a used 2020 Mercedes-Benz GLS?

Accident-free inventory is solid at 76.8% — always verify the vehicle history report.

You should prioritize a history report first, then inspect the vehicle closely for signs of prior damage, uneven wear, or neglected maintenance. Pay extra attention to the cabin electronics, touch controls, third-row access, and overall condition, since this model’s luxury features are a major part of its value. A thorough pre-purchase inspection is especially important on a premium SUV like this one.

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

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

• Deal availability: 38.3% of listings are priced as good or great deals.
• Inventory: There are 814 listings available.
• Price trend: Prices have softened 16.13% compared with last year.
• Clean inventory: 76.8% of listings are accident-free.

If you find a listing below $31,843, 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 $31,843 sits slightly below last year's $37,968.

That price drop suggests the market has already absorbed a meaningful amount of depreciation, which can help future sellers if they buy at the right price today. If you shop carefully now, you may reduce the amount of value lost over your ownership period. Strong demand for a roomy, luxury three-row SUV can also help support pricing when it’s time to sell.

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:

• 38.3% of listings are priced as good or great deals.
• Accident-free inventory is solid at 76.8% — always verify the vehicle history report.
• Price trend: Prices have softened 16.13% compared with last year.
• Owners rate it 5/5 — a strong satisfaction signal.

Consider the 2021 if:

• At $46,614, the 2021 costs more than the current year's $31,843 average.
• It adds a more flagship-like luxury focus and broader performance appeal.

The bottom line: If you want the better value, the 2020 is the smarter starting point because it combines a lower average price with solid deal availability and strong owner satisfaction. If you’re willing to spend more for a newer model year with a more upscale positioning, the 2021 is the better secondary path.

These recommendations are based on CarGurus' proprietary market data from October 20, 2026, CarGurus experts' opinions, and generative AI.