The 2018 Mercedes-Benz GLS-Class is a luxury SUV that offers three rows of seating. As the successor to the GL-Class, it embodies Mercedes-Benz's commitment to opulence and capability. Available body styles include the standard SUV. Key trims comprise the GLS 450, GLS 550, and the high-performance AMG GLS 63. Pricing ranged from approximately $70,000 to over $125,000 when new. Its spacious cabin, refined ride, and powerful engine options contribute to its popularity.
The Good
The 2018 GLS-Class provides strong performance and impressive comfort, making long journeys a pleasure. Its elegant design and luxurious interior appeal to emotional buyers, while its spaciousness and available safety features cater to practical needs. Reliability is generally good, and it holds its value reasonably well for a luxury SUV. Fuel efficiency is adequate for its size.
The Bad
Potential weaknesses of the 2018 GLS-Class include higher maintenance costs compared to non-luxury SUVs. Some owners have reported issues with the infotainment system and air suspension. Watch out for potential oil leaks, especially in higher-mileage examples. The third-row seating, while present, may not be comfortable for taller adults on longer trips.
2018 Mercedes-Benz GLS-Class: Quick Overview
- Engine Options:
- GLS 450: 3.0-liter V6 Biturbo
- GLS 550: 4.7-liter V8 Biturbo
- AMG GLS 63: 5.5-liter V8 Biturbo
- Horsepower:
- GLS 450: 362 hp
- GLS 550: 449 hp
- AMG GLS 63: 577 hp
- Fuel Economy (MPG, City/Highway/Combined - estimates):
- GLS 450: 17/22/19
- GLS 550: 14/19/16
- AMG GLS 63: 13/17/14
- 0-60 Times (seconds - estimates):
- GLS 450: 6.1
- GLS 550: 5.2
- AMG GLS 63: 4.5
- Towing Capacity: 7,500 lbs (all models)
- Trim-Level Features:
- GLS 450: Standard features include a sunroof, power liftgate, rearview camera, COMAND infotainment system with an 8-inch display, Apple CarPlay/Android Auto, and MB-Tex upholstery.
- GLS 550: Adds leather upholstery, multi-contour front seats with massage function, a Harman Kardon Logic 7 sound system, and adaptive damping.
- AMG GLS 63: Includes AMG-specific styling cues, an upgraded suspension, performance brakes, AMG sport seats, and a Nappa leather interior. Also features more aggressive tuning for engine and transmission.
- Common Features Across Trims:
- Heated front seats
- Power-folding third-row seats
- Navigation system
- Blind-spot monitoring
- Pre-Safe system
2018 Mercedes-Benz GLS-Class Specifications
Vehicle Information
| Year | 2018 |
| 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 | - |
| Gross Vehicle Weight Rating | - |
| Overall Height | 184.91 cm |
| Overall Length | 516.13 cm |
| Overall Width | 214.12 cm |
| Wheelbase Length | 307.59 cm |
| Standard Seating | 7 |
Engine & Performance
| Engine | V-6 |
| Engine Size | 5.5L |
| Engine Cylinders | 6 |
| Transmission | Automatic |
| Transmission Type | Automatic |
| Transmission Speeds | 7-Speed |
| Drivetrain | All-Wheel Drive |
Additional Features
| Anti-Brake System | 4-Wheel ABS |
| Steering Type | Rack & Pinion |
Pricing
| Manufacturer Suggested Retail Price (MSRP) | $125,300 USD |
| Invoice Price | $116,529 USD |
| Delivery Charges | $995 USD |
Vehicle History Report
Vehicle
Specifications
Specifications
Ownership
History
History
All History
Events
Events
NMVTIS Title
History Check
History Check
Salvage/Rebuilt
Check
Check
Accident
Check
Check
Theft
Check
Check
Open Lien
Check
Check
Past Sale
Listings
Listings
Safety
Recalls
Recalls
Odometer
Check
Check
Market Price
Analysis
Analysis
What Problems Does the 2018 Mercedes-Benz GLS-Class Have?
Frequently reported problems for the 2018 Mercedes-Benz GLS-Class include issues related to the air suspension system, which can lead to sagging or failure over time. Problems with the infotainment system, particularly the COMAND interface, have also been noted, including freezing, slow response times, and connectivity glitches. Some owners have reported oil leaks, especially in the GLS 550 and AMG GLS 63 models, potentially stemming from turbocharger or valve cover gaskets.
Recalls for the 2018 model year have addressed issues such as potential fuel leaks and problems with the emergency call system (eCall). Long-term reliability concerns often revolve around the complexity of the vehicle's electronics and the potential for costly repairs related to the advanced technology features. The air suspension system, while providing a comfortable ride, is a common source of expensive repairs as the vehicle ages. Proper maintenance, including regular oil changes and inspections, is crucial to mitigating these issues. Additionally, checking the vehicle history for any prior recalls and ensuring they have been addressed is highly recommended when considering a used 2018 GLS-Class.
Recalls for the 2018 model year have addressed issues such as potential fuel leaks and problems with the emergency call system (eCall). Long-term reliability concerns often revolve around the complexity of the vehicle's electronics and the potential for costly repairs related to the advanced technology features. The air suspension system, while providing a comfortable ride, is a common source of expensive repairs as the vehicle ages. Proper maintenance, including regular oil changes and inspections, is crucial to mitigating these issues. Additionally, checking the vehicle history for any prior recalls and ensuring they have been addressed is highly recommended when considering a used 2018 GLS-Class.
How long will the 2018 Mercedes-Benz GLS-Class last?
With proper maintenance, a 2018 Mercedes-Benz GLS-Class can easily reach 150,000 miles or more. Expect about 10-15 years of service with regular upkeep. Long-term durability hinges on diligent maintenance, particularly of the air suspension and complex electronic systems. Weaknesses over time include potential for air suspension failure, infotainment system glitches, and oil leaks. Preventative maintenance, such as regular fluid changes and inspections, is crucial for maximizing longevity. Ignoring maintenance can lead to significantly reduced lifespan and increased repair costs.
What Technology & Safety Features are Included?
The 2018 Mercedes-Benz GLS-Class boasts a comprehensive suite of built-in tech, entertainment, driver-assistance, and safety features. Standard features include the COMAND infotainment system with an 8-inch display, navigation, Apple CarPlay/Android Auto compatibility, and Bluetooth connectivity. The standard sound system is adequate, but the available Harman Kardon Logic 7 surround sound system offers a significant upgrade.
Driver-assistance features include a rearview camera, blind-spot monitoring, lane keeping assist, and Pre-Safe, Mercedes-Benz's anticipatory safety system. Optional features include adaptive cruise control, active lane keeping assist, a surround-view camera, and parking assist. For entertainment, rear-seat entertainment systems were available as an option, providing screens and DVD players for passengers.
In terms of safety, the 2018 GLS-Class offers a robust structure and numerous airbags. The NHTSA (National Highway Traffic Safety Administration) awarded the 2018 GLS-Class a 5-star overall safety rating. The IIHS (Insurance Institute for Highway Safety) ratings vary, but the GLS generally performs well in crash tests, though specific ratings can vary based on the model year and testing criteria. Advanced safety technologies aim to prevent accidents and protect occupants in the event of a collision.
Driver-assistance features include a rearview camera, blind-spot monitoring, lane keeping assist, and Pre-Safe, Mercedes-Benz's anticipatory safety system. Optional features include adaptive cruise control, active lane keeping assist, a surround-view camera, and parking assist. For entertainment, rear-seat entertainment systems were available as an option, providing screens and DVD players for passengers.
In terms of safety, the 2018 GLS-Class offers a robust structure and numerous airbags. The NHTSA (National Highway Traffic Safety Administration) awarded the 2018 GLS-Class a 5-star overall safety rating. The IIHS (Insurance Institute for Highway Safety) ratings vary, but the GLS generally performs well in crash tests, though specific ratings can vary based on the model year and testing criteria. Advanced safety technologies aim to prevent accidents and protect occupants in the event of a collision.
What Colors Options are Available?
Exterior Colors
Black
Polar White
Obsidian Black Metallic
Iridium Silver Metallic
Selenite Grey Metallic
Lunar Blue Metallic
Cinnamon Brown Metallic
designo Diamond White Metallic
designo Cardinal Red Metallic
Emerald Green Metallic
Diamond Silver Metallic
designo Mystic Brown Metallic
Interior Colors
Black Nappa Leather
Espresso Brown Leather
Ginger Beige/Espresso Brown Leather
Crystal Grey Leather
designo Black Nappa Leather
designo Porcelain/Black Nappa Leather
designo Saddle Brown Nappa Leather
designo Mocha Brown Nappa Leather
2018 Mercedes-Benz GLS-Class Prices and Market Value
When new, the 2018 Mercedes-Benz GLS-Class ranged from approximately $70,000 for the GLS 450 to over $125,000 for the AMG GLS 63. Current used market prices vary significantly based on mileage, condition, and trim level, ranging roughly from $35,000 to $65,000. Depreciation is considerable, especially for the higher trims. Factors affecting resale value include the vehicle's condition, maintenance history, mileage, and the presence of desirable options. Models with lower mileage and a clean vehicle history command higher prices. The AMG models tend to hold their value better than the base models due to their performance and exclusivity.
2018 Mercedes-Benz GLS-Class Cost of Ownership
The 2018 Mercedes-Benz GLS-Class is a costly vehicle to own long-term. Insurance premiums are higher than average due to its luxury status and repair costs. Fuel costs are significant, especially for the V8 models. Maintenance, including servicing the air suspension and complex electronics, can be expensive. Repairs, when needed, are typically pricier than those for mainstream SUVs. Overall, expect higher-than-average ownership costs due to insurance, fuel consumption, maintenance, and potential repairs associated with a luxury SUV.
2018 Mercedes-Benz GLS-Class Fuel Efficiency
Fuel Type
Gasoline
Fuel Capacity
99.93 liters
City Mileage
5.53 km/l
Highway Mileage
7.65 km/l
2018 Mercedes-Benz GLS-Class Safety Rating
NHTSA
2018 Mercedes-Benz GLS-Class Warranty
Basic
Original warranty
48 months / 50,000 miles
Estimated remaining
Expired
Powertrain
Original warranty
48 months / 50,000 miles
Estimated remaining
Expired
Rust
Original warranty
48 months / 50,000 miles
Estimated remaining
Expired
2018 Mercedes-Benz GLS-Class Insurance
Insurance for a 2018 Mercedes-Benz GLS-Class is moderately priced, reflecting its status as a Sport Utility Vehicle with strong safety ratings and
reasonable repair costs.
reasonable repair costs.
How Does the 2018 Mercedes-Benz GLS-Class Compare to Other Sport Utility Vehicle?
The 2018 Mercedes-Benz GLS-Class competes with the BMW X7, Audi Q7, Cadillac Escalade, and Land Rover Range Rover. In terms of performance, the AMG GLS 63 is a standout, rivaling the Range Rover Sport SVR. Features are generally comparable across the segment, though Mercedes' COMAND system has detractors. Reliability can be a concern, with the Audi Q7 often perceived as slightly more reliable. The Escalade offers more cargo space and a lower price point.
Compared to the BMW X7, the GLS offers a slightly more traditional SUV design, while the X7 boasts a more modern and tech-forward interior. The Audi Q7 excels in handling and technology integration, but its third-row space is tighter. The Cadillac Escalade provides significantly more space and towing capacity, but lacks the same level of luxury refinement. The Range Rover offers superior off-road capabilities.
Alternatives depend on priorities. For maximum space and value, the Cadillac Escalade is compelling. For a sportier driving experience, the BMW X7 or Audi Q7 are excellent choices. If off-road capability is a must, consider the Land Rover Range Rover. The GLS strikes a good balance, but may not be the best in any single category.
Compared to the BMW X7, the GLS offers a slightly more traditional SUV design, while the X7 boasts a more modern and tech-forward interior. The Audi Q7 excels in handling and technology integration, but its third-row space is tighter. The Cadillac Escalade provides significantly more space and towing capacity, but lacks the same level of luxury refinement. The Range Rover offers superior off-road capabilities.
Alternatives depend on priorities. For maximum space and value, the Cadillac Escalade is compelling. For a sportier driving experience, the BMW X7 or Audi Q7 are excellent choices. If off-road capability is a must, consider the Land Rover Range Rover. The GLS strikes a good balance, but may not be the best in any single category.
Ranks #555 SUV
| 1 | 2023 Toyota 4Runner | (5.0★) |
| 2 | 2023 Honda CR-V Hybrid | (5.0★) |
| 3 | 2023 Lexus GX | (0.0★) |
| 4 | 2024 Mazda CX-90 PHEV | (0.0★) |
| 5 | 2024 Subaru Crosstrek | (5.0★) |
| 6 | 2024 BMW iX | (0.0★) |
| 7 | 2023 Ford Bronco Sport | (3.0★) |
| 8 | 2023 Mercedes-Benz EQB | (0.0★) |
| 9 | 2024 Chevrolet Trax | (5.0★) |
| 10 | 2023 Audi A4 allroad | (0.0★) |
| 11 | 2023 Hyundai Kona N | (0.0★) |
| 12 | 2023 Nissan ARIYA | (5.0★) |
| 555 | 2018 Mercedes-Benz GLS-Class | (0.0★) |
Final Verdict: Is the 2018 Mercedes-Benz GLS-Class a Good Sport Utility Vehicle?
The 2018 Mercedes-Benz GLS-Class is ideal for families seeking a luxurious and spacious SUV with a prestigious badge. It's worth buying, especially on the used market, if you prioritize comfort and a refined driving experience, but are prepared for potentially higher maintenance costs. The GLS 450 offers a good balance of performance and efficiency, making it a practical choice. Carefully inspect any used GLS for air suspension and electronic issues before purchasing. Consider a certified pre-owned model for added peace of mind. If reliability is a top priority, exploring alternatives like the Audi Q7 might be prudent. Otherwise, the GLS offers a compelling blend of luxury, space, and performance.
Cathleen V
Cathleen is an exceptional freelance writer covering hot topics in the automotive world from a gearhead's perspective. Her articles delve into various aspects of automotive technology and history, offering readers detailed insights into engine performance, reliability, and maintenance. Through her engaging and informative writing, Cathleen provides valuable information to automotive enthusiasts and consumers alike, helping them make informed decisions about vehicle maintenance and purchases.