Used Mercedes-Benz GLS for Sale nearAllentown, 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 $53,073, and its nationwide low point over the past year was $52,154. 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 large luxury SUV with broad owner appeal and a premium feel. The all-generations owner rating is 4.7/5 across every model year in the data.

Owners consistently praise the GLS for its comfort, smooth ride, and strong performance. The cabin quality and upscale character also come through repeatedly, along with the sense that it delivers a polished, high-end driving experience.

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

The main trade-offs center on fuel economy, higher pricing, and some technology and ergonomic frustrations in recent years. For used shoppers, that means the GLS rewards you most when you prioritize comfort, space, and luxury over efficiency and simplicity.

36.5% of listings are priced as good or great deals.

Are Mercedes-Benz GLS models reliable?

Owners consistently describe the GLS as a comfortable, well-built luxury SUV with strong performance and a premium cabin. Expert feedback also points to a polished driving experience and high-end craftsmanship as recurring strengths.

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

For used buyers, long-term ownership risk is most tied to age, mileage, and how well the vehicle was maintained, so a thorough history check and pre-purchase inspection matter most on older examples.

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

Across all model years, accident-free inventory is solid at 84.2% — 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: lane-keep assist, forward-collision warning, automatic emergency braking, blind-spot monitors, stop-sign and traffic-light recognition, speed-limit tracking, and adaptive cruise control with stop-and-go functionality
• Infotainment: standard Superscreen with three 12.3-inch screens and MBUX infotainment based on MB.OS, plus wireless Apple CarPlay and Android Auto
• 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 six-cylinder model with standard leather upholstery, heated and ventilated front seats, a panoramic glass roof, and the standard Superscreen; this is the best-value trim for most shoppers who want the core GLS experience.
• GLS 580 4Matic: adds the V8 powertrain and extra performance, making it the right pick if you want stronger acceleration and a more muscular character.
• AMG GLS 63: adds the performance model’s sporty body kit, unique 21-inch wheels, performance-tuned transmission and suspension, limited-slip differential, and beefier brakes.
• Maybach GLS 680: adds the ultra-luxury treatment with extra chrome and 22-inch monobloc wheels.

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 color, trim, and price. They also sit close enough to the newest models to keep the GLS’s modern luxury and technology appeal intact.

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

The table shows broad downward movement across the GLS lineup, which can work in your favor if you’re shopping used. Several years have seen double-digit drops, so you may find stronger value in recent model years than their original pricing suggests. The smallest declines are still meaningful, but they show that some versions are holding value a bit better than others.

The 2017, 2021, and 2023 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 −11.58% versus a year ago, and the 2024 model is at −12.86%.
• Deal availability: The 2025 model has 35.8% 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 $78,593. The Mercedes-Benz GLS offers a roomy, three-row cabin with a premium, family-friendly character that makes it especially appealing if you want comfort and space in a luxury SUV.

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 450 produces 375 horsepower and 413 pound-feet of torque.
• Tech: New for 2027, the standard Superscreen is actually three 12.3-inch screens in one dashboard-spanning housing, and the screens run a new version of the MBUX infotainment system based on Mercedes’ own MB.OS operating system.
• 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.

How does the 2024 Mercedes-Benz GLS compare to the 2024 BMW X7?

These recommendations are based on CarGurus' proprietary market data from October 27, 2026, CarGurus experts' opinions, and generative AI.