New Mercedes-Benz GLS for Sale nearMount Morris, IL

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 $53,555, and its nationwide average price reached a low of $52,162 over the past year. 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 earns strong marks from owners for its comfort, smooth ride, and premium feel across the lineup. The all-generations owner rating is 4.69/5 across every model year in the data.

Owners consistently praise the GLS for its luxurious cabin, impressive performance, and high-quality craftsmanship. Across the model years, the most common compliments center on comfort, ride quality, and the sense of refinement you get behind the wheel.

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

The main trade-offs that show up in expert reviews are fuel economy, third-row access, and technology usability, especially in recent years where the GLS leans heavily into comfort and luxury. 34.7% 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 premium build quality. Expert reviews also reinforce that impression with repeated praise for the cabin materials, driving refinement, and overall luxury character.

• Owners rate the Mercedes-Benz GLS between 4.5 and 5.0 out of 5 stars across all model years in the data.

For used buyers, the long-term ownership picture looks strongest when you choose a well-kept example with a clean history and a thorough pre-purchase inspection.

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

Across all model years, accident-free inventory is solid at 84.1% — always verify the vehicle history report.

Older model years carry meaningfully higher accident rates, so always verify the vehicle history report on pre-2021 models.

Key things to evaluate:

• Safety package: Mercedes’ innovative Pre-Safe, Crosswind Assist, and Active Emergency Stop Assist technologies.
• Infotainment: Wireless Apple CarPlay and Android Auto and a navigation system with augmented reality enhancement.
• Fuel efficiency: It’s EPA-rated at 21 mpg combined, but with the standard Dynamic Select system in the Comfort driving mode for most of the test-drive, we observed 19.4 mpg on our mountainous Southern California evaluation route.

Which Mercedes-Benz GLS trim should I buy?

The 2026 Mercedes-Benz GLS offers these trims:

• GLS 450: The entry point, with a turbocharged 3.0-liter inline-six, mild-hybrid assist, standard 4Matic all-wheel drive, a nine-speed automatic transmission, and standard Airmatic adaptive suspension; it suits buyers who want the core GLS experience with strong comfort and capability.
• GLS 580: The step-up choice for buyers who want more power and a richer luxury feel.
• AMG GLS 63: The performance-focused trim for buyers who want the most athletic character in the lineup.
• Maybach GLS 600: The most opulent version, aimed at buyers who want the highest level of exclusivity and luxury.

What Mercedes-Benz GLS do most buyers choose?

The Mercedes-Benz GLS years with the most listings are 2025, 2024, and 2023.

Those higher-volume years tend to be the most popular used picks because they give you the broadest selection of listings and a strong mix of pricing and equipment. They also make it easier to compare condition, mileage, and deal quality across multiple examples.

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

The GLS shows broad year-over-year price declines across the model years in this table, which is good news if you’re shopping used. The drops are especially pronounced on several older and mid-cycle years, while the newest models are also moving down from their prior-year prices. That creates more room for value-minded buyers to find a well-equipped GLS at a lower entry point than before.

The 2023, 2017, and 2025 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’ standard equipment list, including Mercedes’ innovative Pre-Safe, Crosswind Assist, and Active Emergency Stop 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 −10.99% versus a year ago, and the 2024 model is at −11.31%.
• Deal availability: The 2025 model has 34.2% good and great deals, and the 2024 model has 33.8%.
• Sweet-spot year: The 2025 model has the most listings at a current average price of $79,593. The Mercedes-Benz GLS offers a quiet and comfortable cabin, strong refinement, and a spacious three-row layout that makes it especially appealing for family use.

Consider waiting if:

• Powertrain/efficiency: A turbocharged 3.0-liter inline-six 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 is coupled with a nine-speed automatic transmission and standard 4Matic all-wheel-drive (AWD), accelerating the GLS 450 0-60 mph in a manufacturer-estimated 5.8 seconds.
• 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’ standard equipment list, including Mercedes’ innovative Pre-Safe, Crosswind Assist, and Active Emergency Stop Assist technologies.
• Starting price: Prices range from $91,600 to $181,350, including the very reasonable $1,350 destination charge for this Alabama-built SUV.

If you're buying used today, the 2025 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.

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