Used Mercedes-Benz GLS for Sale nearMilwaukee, 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 $52,984, and its nationwide average price reached a low of $52,138 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 comfort, space, and a premium driving feel.

The all-generations owner rating is 4.7/5 across every model year in the data.

Owners consistently praise the GLS for its luxurious comfort, smooth ride, and impressive performance. They also highlight the powerful engine choices and high-quality craftsmanship that give it a premium feel. Across the model years, owners often point to the GLS as a refined, upscale SUV with strong everyday appeal.

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 ergonomic quirks, along with technology that can feel less intuitive in certain years.

36.8% 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, and expert reviews reinforce its strong luxury-first character. Across the model years, it comes across as a well-executed full-size SUV that delivers a polished ownership experience.

• 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 maintenance costs and the complexity that comes with a high-end luxury SUV.

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: standard driver-assistance features include 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: the standard Superscreen is three 12.3-inch screens in one dashboard-spanning housing, running a new version of the MBUX infotainment system based on Mercedes’ own MB.OS operating system, developed in-house.
• Fuel efficiency: Mercedes expects the six-cylinder GLS 450 to achieve 21 mpg combined (19 mpg city, 24 mpg highway) in EPA testing.

Which Mercedes-Benz GLS trim should I buy?

The 2027 Mercedes-Benz GLS offers these trims:

• GLS 450 4Matic: the entry six-cylinder model, with 375 horsepower, 4Matic all-wheel drive, a nine-speed automatic, standard leather upholstery, heated and ventilated front seats, and the new Superscreen; this is the best-value trim for most buyers who want the core GLS experience.
• GLS 580 4Matic: adds a twin-turbo 4.0-liter V8 with 530 hp and 553 lb-ft of torque, plus the large Mercedes star in the grille center and stronger straight-line performance for buyers who want more power.
• AMG GLS 63: the performance model, with a sporty body kit, unique 21-inch wheels, a performance-tuned transmission and suspension, a limited-slip differential, and beefier brakes.
• Maybach GLS 680: the ultra-luxury model, with extra chrome, 22-inch monobloc wheels, and the most exclusive presentation in the lineup.

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 a broader spread of pricing and equipment. They also tend to attract more attention from used buyers because they balance availability with newer features.

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

The table shows broad double-digit price declines across the GLS lineup, which is good news if you’re shopping used. Newer and older model years alike are moving down from their prior-year levels, so you can find meaningful savings across the range. The pattern also suggests that the GLS is giving up value at a fairly steady pace rather than showing sharp exceptions in one direction or another.

The 2017, 2021, and 2018 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

The 2027 GLS includes standard driver-assistance features such as 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.

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 −12.47% versus a year ago, and the 2024 model is at −15.01%.
• Deal availability: The 2025 model has 35.8% good and great deals, and the 2024 model has 37.6%.
• Sweet-spot year: The 2025 model has the most listings at a current average price of $77,757. The Mercedes-Benz GLS offers a roomy, upscale cabin with three rows of seating and a distinctly premium feel.

Consider waiting if:

• Powertrain/efficiency: Mercedes continues to offer an array of powertrains, all of which have been updated for 2027 to improve responsiveness and reduce noise, vibration, and harshness, and all GLS models feature an integrated starter/generator electric motor, nine-speed automatic transmissions, and 4Matic all-wheel drive (AWD).
• Tech: the standard Superscreen is 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, developed in-house.
• Safety: Mercedes claims the GLS’ sensor suite can handle a more advanced driver-assistance system that will be released as an over-the-air update pending regulatory approval.
• 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 November 10, 2026, CarGurus experts' opinions, and generative AI.