Used Mercedes-Benz GLS for Sale nearReading, PA

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 $53,305, and its nationwide average price reached a low of $52,195 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 is a strong choice if you want a luxury three-row SUV with broad appeal across 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 luxurious comfort, smooth ride, and high-quality craftsmanship. They also frequently highlight its strong performance and premium driving experience, along with the roomy cabin and family-friendly utility.

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

The main trade-offs across recent expert-tested years center on fuel economy, technology ergonomics, and third-row access.

35.9% of listings are priced as good or great deals.

Are Mercedes-Benz GLS models reliable?

Owners consistently give the GLS very strong marks for comfort, performance, and craftsmanship, and expert feedback echoes that premium, well-executed character. Across the model years in the data, the GLS also earns praise for its smooth ride and upscale cabin experience.

• 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 shaped more by maintenance costs, fuel use, and the condition of individual examples than by the model’s overall owner satisfaction.

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

Across all model years, accident-free inventory is solid at 84.8% — 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:

• Fuel efficiency: 21 mpg combined (19 mpg city, 24 mpg highway)

Which Mercedes-Benz GLS trim should I buy?

The 2027 Mercedes-Benz GLS offers these trims:

• GLS 450 4Matic: The entry six-cylinder model brings 375 horsepower, 413 pound-feet of torque, the standard Superscreen, wireless Apple CarPlay and Android Auto, and standard driver-assistance features; it’s the best-value choice for shoppers who want the core GLS experience.
• GLS 580 4Matic: This V8 trim adds 530 horsepower and 553 pound-feet of torque, plus the stronger performance character that suits buyers who want more effortless acceleration.
• AMG GLS 63: The performance model adds 603 horsepower, 627 pound-feet of torque, a performance-tuned transmission and suspension, a limited-slip differential, and beefier brakes.
• Maybach GLS 680: The ultra-luxury model adds the most exclusive treatment in the lineup, with extra chrome, 22-inch monobloc wheels, and the highest-output V8 tune.

What Mercedes-Benz GLS do most buyers choose?

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

These higher-volume years tend to be the most popular used picks because they give you more inventory to compare and more chances to find the right price, mileage, and equipment mix. They also usually reflect the model years that shoppers are cross-shopping most actively.

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 biggest drops are concentrated in several newer and mid-cycle model years, while the smallest changes are still negative, so values are generally moving lower rather than stabilizing or rising.

The 2017, 2023, and 2021 model years have held their value best, with the smallest year-over-year price changes.

Is the Mercedes-Benz GLS safe?

• 2027: 8/10
• 2026: 7/10
• 2024: 10/10
• 2022: 6/10
• 2021: 9/10

Standard driver-assistance features include lane-keep assist, forward-collision warning, automatic emergency braking, blind-spot monitors, and adaptive cruise control with stop-and-go functionality.

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 −11.39% versus a year ago, and the 2024 model is at −12.66%.
• Deal availability: The 2025 model has 37% good and great deals, and the 2024 model has 36.5%.
• Sweet-spot year: The 2025 model has the most listings at a current average price of $79,176. The Mercedes-Benz GLS offers a roomy, upscale cabin with three-row flexibility and a polished luxury feel.

Consider waiting if:

• Powertrain/efficiency: Mercedes expects the six-cylinder GLS 450 to achieve 21 mpg combined (19 mpg city, 24 mpg highway) in EPA testing, while the GLS 580 has 530 hp and 553 lb-ft of torque.
• Tech: The standard Superscreen is actually three 12.3-inch screens in one dashboard-spanning housing, and wireless Apple CarPlay and Android Auto have been retained.
• Safety: Standard driver-assistance features include lane-keep assist, forward-collision warning, automatic emergency braking, blind-spot monitors, and adaptive cruise control with stop-and-go functionality.
• Starting price: Pricing starts at $95,500 for the GLS 450.

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 October 13, 2026, CarGurus experts' opinions, and generative AI.