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2023 Mercedes-Benz GLS-Class Overview, Reviews, Ratings & Specs

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Jovan | October 6, 2025
The 2023 Mercedes-Benz GLS-Class is a full-size luxury SUV, often referred to as the "S-Class of SUVs." Introduced in its current generation in 2020, it offers opulent comfort and advanced technology. Key trims include the GLS 450 4MATIC and the more powerful GLS 580 4MATIC, with pricing typically starting in the high $80,000s. Its popularity stems from its spacious interior, refined ride, and status as a benchmark for large luxury SUVs.
The Good

The GLS excels in luxurious comfort, a smooth and powerful performance from its potent engines, and a sophisticated, elegant design. Its advanced technology and safety features offer peace of mind, while its spaciousness appeals to families seeking practicality and a premium experience.

The Bad

Potential buyers should be aware of its high purchase price and associated ownership costs, including insurance and maintenance. Some may find the infotainment system complex initially, and while generally reliable, any luxury SUV can present costly repairs if issues arise outside of warranty.

2023 Mercedes-Benz GLS-Class: Quick Overview

  • Engine Options:
  • GLS 450 4MATIC: 3.0-liter turbocharged inline-6 with EQ Boost mild-hybrid system
  • Horsepower: GLS 450 4MATIC: 362 hp
  • Torque: GLS 450 4MATIC: 369 lb-ft
  • GLS 580 4MATIC: 4.0-liter biturbo V8 with EQ Boost mild-hybrid system
  • Horsepower: GLS 580 4MATIC: 483 hp
  • Torque: GLS 580 4MATIC: 516 lb-ft
  • Fuel Economy (EPA Estimated MPG City/Highway):
  • GLS 450 4MATIC: Approximately 19/23
  • GLS 580 4MATIC: Approximately 16/21
  • 0-60 Times (Approximate):
  • GLS 450 4MATIC: 5.9 seconds
  • GLS 580 4MATIC: 5.2 seconds
  • Towing Capacity: Up to 7,700 lbs
  • Key Trim-Level Features (GLS 450 4MATIC):
    • 3.0L Inline-6 Turbo Engine with EQ Boost
    • 9-Speed Automatic Transmission
    • 4MATIC All-Wheel Drive
    • Air suspension (AIRMATIC)
    • 12.3-inch digital instrument cluster
    • 12.3-inch infotainment touchscreen with MBUX
    • Navigation
    • Apple CarPlay and Android Auto
    • Power-adjustable front seats with memory
    • Heated front seats
    • Sunroof
    • LED headlights and taillights
    • Power liftgate
    • Keyless entry and ignition
    • Surround view camera system
    • Blind-spot monitoring
    • Active brake assist
    • Traffic sign assist
  • Key Trim-Level Features (GLS 580 4MATIC - adds/enhances upon GLS 450):
    • 4.0L V8 Biturbo Engine with EQ Boost
    • Larger wheels
    • Nappa leather upholstery
    • Enhanced interior trim options
    • Active ambient lighting
    • Head-up display
    • Optional massaging seats
    • Optional Burmester High-End 3D Surround Sound system

2023 Mercedes-Benz GLS-Class Specifications

Vehicle Information
Year 2023
Make Mercedes-Benz
Model GLS-Class
Trim -
Style SUV
Type Sport Utility Vehicle
Category Standard Sport Utility Vehicle
Manufacturing Details
Made In United States
Manufacturing City VANCE
Dimensions
Doors 4-Door
Curb Weight 2629.93 kg
Gross Vehicle Weight Rating 3628.74 kg
Overall Height -
Overall Length 524.26 cm
Overall Width -
Wheelbase Length 313.44 cm
Standard Seating 7
Engine & Performance
Engine 3.0-L I6
Engine Size 3L
Engine Cylinders 6
Transmission Automatic
Transmission Type Automatic
Transmission Speeds 9-Speed
Drivetrain All-Wheel Drive
Additional Features
Anti-Brake System 4-Wheel ABS
Steering Type Rack & Pinion
Pricing
Manufacturer Suggested Retail Price (MSRP) $139,000 USD
Invoice Price -
Delivery Charges $1,150 USD

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What Problems Does the 2023 Mercedes-Benz GLS-Class Have?

While the 2023 Mercedes-Benz GLS-Class is generally considered reliable, as with many complex luxury vehicles, there are some areas to be aware of. For recent model years, including 2023, common themes in owner feedback and technical service bulletins can sometimes revolve around the sophisticated electronics and the EQ Boost mild-hybrid system. Owners have occasionally reported issues with the MBUX infotainment system, such as glitches, freezing screens, or connectivity problems with Apple CarPlay and Android Auto. The adaptive air suspension, while providing excellent comfort, can be a potential source of repair down the line, although major failures are not overwhelmingly common. Some drivers have noted minor electrical gremlins, such as interior lighting malfunctions or issues with power-adjustable seat functions. Recalls for the 2023 model year are typically issued by manufacturers to address specific safety concerns, and these are usually addressed by dealerships. It's important to check the National Highway Traffic Safety Administration (NHTSA) website for any specific recalls that might have been issued for the 2023 GLS-Class. In terms of long-term reliability, Mercedes-Benz vehicles generally require diligent maintenance. Owners who adhere to the recommended service schedule and use genuine Mercedes-Benz parts tend to experience fewer significant issues. However, out-of-warranty repairs on the advanced systems (powertrain, suspension, electronics) can be quite expensive. The complexity of the vehicle means that diagnosis and repair often require specialized tools and expertise, contributing to higher long-term ownership costs compared to less sophisticated vehicles. While specific widespread mechanical failures are not heavily reported for the 2023 GLS, ongoing attention to regular maintenance is key to ensuring its longevity and minimizing potential repair bills.

How long will the 2023 Mercedes-Benz GLS-Class last?

Based on owner data for similar luxury SUVs and Mercedes-Benz's reputation, the 2023 GLS-Class can reasonably be expected to serve its owners well for 150,000 to 200,000 miles with proper and consistent maintenance. Long-term durability is generally strong, particularly for the core powertrain components, which are built to high standards. However, the longevity of its sophisticated electronic systems and air suspension can be more variable. Owners who strictly follow the manufacturer's maintenance schedule, including regular fluid changes, filter replacements, and inspections at authorized Mercedes-Benz service centers, are likely to experience fewer major issues. Neglecting maintenance or using non-genuine parts can accelerate wear and increase the likelihood of costly repairs, especially concerning the complex MBUX system and adaptive suspension components over time.

What Technology & Safety Features are Included?

The 2023 Mercedes-Benz GLS-Class is a technological tour de force, blending cutting-edge features with an intuitive user experience. Central to its tech suite is the Mercedes-Benz User Experience (MBUX) system, featuring dual 12.3-inch screens: one serving as a digital instrument cluster and the other as a vibrant infotainment touchscreen. MBUX offers natural voice control (activated by saying "Hey Mercedes"), augmented reality navigation, and wireless Apple CarPlay and Android Auto integration. Standard tech includes a premium sound system, HD radio, and multiple USB ports.
  • Driver-Assistance & Safety Features (Standard):
  • Active Brake Assist (forward collision warning with automatic emergency braking)
  • Blind Spot Assist
  • Active Lane Keeping Assist
  • Traffic Sign Assist
  • Driver attention monitor
  • Surround view camera system
  • Parking Pilot
  • Crosswind Assist
Optional Features: Many advanced driver-assistance systems are available as part of packages or standalone options. These can include;
  • Distronic Plus (adaptive cruise control with steering assist)
  • Active Lane Change Assist
  • Active Steering Assist
  • Evasive Steering Assist
  • Pre-Safe Plus with Pedestrian Recognition
  • Head-Up Display
  • Night View Assist Plus
  • Burmester High-End 3D Surround Sound system
  • Rear-seat entertainment system
  • Heated and ventilated second-row seats
  • Massaging front seats
Crash-Test Ratings: While specific crash-test ratings for the 2023 GLS-Class from organizations like the NHTSA or IIHS may not be fully released or updated at the time of this writing, previous model years have generally performed very well, earning top marks in various impact tests due to its robust construction and comprehensive safety suite. Mercedes-Benz typically designs its vehicles to meet and exceed stringent safety standards.

What Colors Options are Available?

We’re working on this section!
In the meantime, feel free to explore the other sections for more content.

2023 Mercedes-Benz GLS-Class Prices and Market Value

When new, the 2023 Mercedes-Benz GLS-Class had a starting MSRP typically in the high $80,000s for the GLS 450 4MATIC, with the GLS 580 4MATIC well into the $100,000s. Currently, on the used market, prices for a 2023 GLS will vary significantly based on mileage, condition, options, and trim level. You might find well-equipped models ranging from the $70,000s to over $100,000. The GLS generally experiences moderate depreciation, typical for luxury vehicles. Factors influencing its resale value include brand reputation, the desirability of its features, its maintenance history, and overall market demand for large luxury SUVs. Models with premium packages and lower mileage tend to hold their value better.

2023 Mercedes-Benz GLS-Class Cost of Ownership

Owning a 2023 Mercedes-Benz GLS-Class is generally considered costly. Insurance premiums will be higher than average due to its luxury status and repair costs. Fuel economy, while improving with the EQ Boost, still requires premium gasoline, contributing to significant fuel expenses. Maintenance costs are also substantial; regular servicing at a Mercedes-Benz dealership involves premium pricing for parts and labor. Repairs, especially out of warranty for complex systems like the MBUX or air suspension, can be exceptionally expensive. The GLS is undeniably a costly vehicle to own and operate, reflecting its premium nature.

2023 Mercedes-Benz GLS-Class Fuel Efficiency

Fuel Type Gasoline
Fuel Capacity 44.65 liters
City Mileage 5.57 km/l
Highway Mileage 4.34 km/l

2023 Mercedes-Benz GLS-Class Safety Rating

NHTSA
Overall Rating Not Tested
Overall Frontal Star Rating Not Tested
Side Overall Star Rating Not Tested
Overall Rollover Star Rating Not Tested
Combined Front Seat Rating Not Tested
Combined Rear Seat Rating Not Tested
Overall Frontal Star Rating Not Tested
Frontal Barrier Star Ratings Not Tested
Overall Side Star Rating Not Tested
Side Barrier Star Ratings Not Tested
Side Pole Star Rating Not Tested
Combined Side Barrier And Side Pole Star Ratings Not Tested
Rollover Resistance Star Rating Not Tested

2023 Mercedes-Benz GLS-Class Warranty

Basic
Original warranty 48 months / 50,000 miles
Estimated remaining 24 months / 50,000 miles
Powertrain
Original warranty 48 months / 50,000 miles
Estimated remaining 24 months / 50,000 miles
Rust
Original warranty 48 months / 50,000 miles
Estimated remaining 24 months / 50,000 miles

2023 Mercedes-Benz GLS-Class Insurance

Insurance for a 2023 Mercedes-Benz GLS-Class is moderately priced, reflecting its status as a Sport Utility Vehicle with strong safety ratings and
reasonable repair costs.

How Does the 2023 Mercedes-Benz GLS-Class Compare to Other Sport Utility Vehicle?

The 2023 Mercedes-Benz GLS-Class competes in a segment dominated by other high-end luxury SUVs. Its primary rivals include the BMW X7, Audi Q8 (though it's a coupe-like SUV, often cross-shopped), and the Cadillac Escalade.

Performance: The GLS offers refined yet potent powertrains, particularly the V8 in the GLS 580, which rivals or surpasses the performance of competitors. The BMW X7 also offers strong engine options, while the Escalade provides robust V8 power.

Features: Mercedes-Benz is renowned for its luxurious interiors and advanced technology, and the GLS excels here with the MBUX system, high-quality materials, and ample comfort features. The X7 is also very well-appointed, offering a similarly sophisticated cabin. The Escalade, particularly in its latest generation, has significantly stepped up its interior luxury and tech game with its massive digital displays.

Reliability: Historically, Mercedes-Benz and BMW have had similar reliability scores, often falling in the average range for luxury vehicles. Cadillac has been improving, but often still trails slightly in long-term reliability perception compared to German rivals. All these vehicles can be expensive to repair out of warranty.

Price: The GLS typically starts at a price point competitive with the X7, often slightly higher depending on options. The Cadillac Escalade often offers a bit more value for its base price, especially with its standard V8 power and extensive feature set.

Alternatives:
- BMW X7: A very strong competitor offering a slightly sportier driving dynamic and equally luxurious interior. It is a very similar alternative.
- Cadillac Escalade: If sheer presence, a more American luxury feel, and cutting-edge digital displays are prioritized, the Escalade is a compelling choice, often at a slightly more accessible price point.
- Lincoln Navigator: Offers a more spacious interior than many rivals and a very comfortable ride, often at a lower price point, though its technology and driving dynamics might not be as cutting-edge as the GLS.

Final Verdict: Is the 2023 Mercedes-Benz GLS-Class a Good Sport Utility Vehicle?

The 2023 Mercedes-Benz GLS-Class is ideal for affluent families or individuals who prioritize ultimate comfort, cutting-edge technology, and a prestigious brand image in a full-size SUV. It’s perfect for those who need ample passenger and cargo space without compromising on luxury or a smooth, refined driving experience.

It is worth buying if you value its class-leading interior comfort, advanced MBUX infotainment, and sophisticated ride quality. Buying new offers the latest features and full warranty, but it comes at a premium price. A used 2023 GLS, particularly one with a thorough maintenance history, can offer significant value, with depreciation making it more accessible. The GLS 450 is a great balance of power and luxury for most, while the GLS 580 provides effortless acceleration for those seeking more performance.

2023 Mercedes-Benz GLS-Class Owner Reviews

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Jovan

Jovan specializes in interpreting vehicle records and making sense of VIN data. With over 10 years of experience in the automotive data industry, his work ensures that every report is clear, accurate, and useful for car buyers.