Used Mercedes-Benz GLS for Sale nearJanesville, WI

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 $53,640, and its nationwide average price reached a low of $52,197 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 a strong reputation with owners for comfort, luxury, and performance across its model years.

The all-generations owner rating is 4.69/5 across every model year in the data.

Owners consistently praise the GLS for its smooth ride, premium cabin feel, and strong power delivery. Reviewers also repeatedly highlight the high-quality craftsmanship and the way the SUV blends luxury with everyday usability. Across the model years, owners often point to the GLS as a refined three-row SUV with a premium driving experience.

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

The main trade-offs center on fuel economy, third-row access, and technology that can feel less intuitive in some years. Some recent models also bring a high price tag, and a few reviews mention cargo space and ergonomics as recurring concerns.

34.2% of listings are priced as good or great deals.

Are Mercedes-Benz GLS models reliable?

Owners consistently praise the GLS for its comfort, craftsmanship, and strong performance, and expert reviews echo that it delivers a quiet cabin and composed ride. Across the model years, the GLS also earns strong owner satisfaction scores, which supports its reputation as a well-liked luxury SUV.

• 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, long-term ownership risk is best managed by checking service history carefully and choosing a well-maintained example, especially on older model years.

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-2020 models.

Key things to evaluate:

• Safety package: Mercedes’ innovative Pre-Safe, Crosswind Assist, Active Emergency Stop Assist, and Car-to-X Communication system.
• 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 base version brings a turbocharged 3.0-liter inline-six with mild-hybrid assist, 375 horsepower, standard 4Matic AWD, a nine-speed automatic transmission, standard Airmatic adaptive suspension, dual 12.3-inch displays, MBUX, wireless Apple CarPlay and Android Auto, and a long list of standard safety systems. It’s the best-value trim for many buyers who want the GLS’s core luxury and capability.
• GLS 580: This trim adds more power and a higher level of performance-oriented luxury.
• AMG GLS 63: This performance-focused trim adds the most aggressive power and sportier hardware in the lineup.
• Maybach GLS 600: This is the most opulent version, with the highest level of luxury and exclusivity.

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 easiest places to shop because you get more inventory to compare and more chances to find the right trim and price. They also tend to attract the broadest mix of shoppers, which helps keep selection strong.

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

The table shows broad year-over-year price declines across the GLS lineup, which can work in your favor if you’re shopping used. The drops are especially pronounced on several model years, while a few newer and older examples show smaller declines. Overall, the pattern points to a market where used buyers can find meaningful value.

The 2023, 2017, and 2021 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 −11.24% versus a year ago, and the 2024 model is at −11.55%.
• Deal availability: The 2025 model has 34.4% good and great deals, and the 2024 model has 34.9%.
• Sweet-spot year: The 2025 model has the most listings at a current average price of $80,117. The Mercedes-Benz GLS offers a quiet and comfortable cabin, strong passenger space, and a refined driving character that suits family use and long-distance travel.

Consider waiting if:

• Powertrain/efficiency: A turbocharged 3.0-liter inline-six provides the 2026 GLS 450’s motive force, with 375 horsepower and 369 pound-feet of torque, and it’s EPA-rated at 21 mpg combined.
• Tech: Wireless Apple CarPlay and Android Auto and a navigation system with augmented reality enhancement are standard.
• Safety: Nearly 40 safety and driver-assistance systems appear on the 2026 GLS’ standard equipment list, including Mercedes’ innovative Pre-Safe, Crosswind Assist, Active Emergency Stop Assist technologies, and Car-to-X Communication system.
• 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 11, 2026, CarGurus experts' opinions, and generative AI.