2026 Mercedes-Benz GLS450 review
Mercedes-Benz GLS450 highlights
Customer rating
(not yet rated)
Mileage (EPA estimate)
19 city, 24 highway, 21 combined
Pricing for current inventory
(no current inventory)
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All Mercedes-Benz GLS450 years
What is new for the 2026 Mercedes-Benz GLS450?
- GLS450 trims have been upgraded with Parking Sensors, Automated Parking, and 20 Inch Plus Wheels as standard equipment this year.
- Remote Start and Navigation System features are now available as options on select trims.
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Ratings & reliability
Customer ratings
The 2026 Mercedes-Benz GLS450 is not yet rated. Help future customers learn about a car you've owned and write a review.
RepairPal gave the Mercedes-Benz GLS450 an overall reliability rating of 3.5 out of 5 stars, which RepairPal describes as Above Average. This rating ranks Mercedes-Benz GLS450 5th out of 20 among Luxury Fullsize SUVs.
RepairPal reports that the average total annual cost for repairs and maintenance on a Mercedes-Benz GLS450 is $937, compared to an average of $779 for Luxury Fullsize SUVs and $591 for all the vehicles RepairPal considered in its dataset.
According to RepairPal, Mercedes-Benz GLS450 owners bring their vehicles into a repair shop for unscheduled repairs an average of 0.6 times per year, compared to an average of 1.8 times for Luxury Fullsize SUVs and 1.3 times for all the vehicles RepairPal considered in its dataset.
RepairPal reported that the probability of a repair being a severe or major issue is 15% for the Mercedes-Benz GLS450, compared to an average of 17% for Luxury Fullsize SUVs and 14% for all the vehicles RepairPal considered in its dataset.
Mercedes-Benz GLS450 features and specs
Curious how Mercedes-Benz GLS450 trims differ? Use our side-by-side vehicle comparison to see the differences and similarities
4D Sport Utility 4WD/AWD
Standard Features
- Overhead Airbags
- A/C Seat(s)
- Lane Departure Warning
- Rear Air Conditioning
- Leatherette Seats
- Rear Defroster
- Power Windows
- Smart Key
- Panoramic Sunroof
- Power Seat(s)
- ABS Brakes
- Parking Sensors
- Rear View Camera
- Air Conditioning
- Traction Control
- Third Row Seat
- Power Folding Third Row
- Side Airbags
- Power Mirrors
- Power Locks
- Blind Spot Monitor
- Adjustable Suspension
- Front Seat Heaters
- Memory Seat(s)
- Automated Parking
- Automated Cruise Control
- Alloy Wheels
- Power Hatch/Deck Lid
- 20 Inch Plus Wheels
- Automatic Transmission
- Turbo Charged Engine
- 4WD/AWD
- Satellite Radio Ready
- AM/FM Stereo
- Apple CarPlay
- Android Auto
- Auxiliary Audio Input
- Burmester Audio
- Bluetooth Technology
- Seat Massagers
- Leather Seats
- Quad Seats
- Rear Seat Heaters
- Heated Steering Wheel
- Rear A/C Seat(s)
- Remote Start
- Head Up Display
- Running Boards
- Tow Hitch
- Navigation System
Drive Wheels
All Wheel Drive (4WD/AWD)
Engine size
3.0L
Horsepower
375
Torque (ft-lbs)
369
Engine type
Turbo Gas
Fuel capacity
23.8
Wheelbase
123.4"
Overall length
205"
Width
79.9"
Height
71.8"
Leg room
F 40.3"/M 41.9"/R 34.6"
Head room
F 39.4"/M 40.2"/R 38.9"
Front tires
P275/45HR21
Rear tires
P315/40HR21
Seating capacity
7
Max towing capacity
770/7700 lbs.
Transmission
Automatic
2026 Mercedes-Benz GLS450 FAQ
The 2026 Mercedes-Benz GLS450 has a maximum towing capacity of 7700 pounds, when properly equipped. Various factors may impact towing capacity, including weight of passengers, cargo, and options/accessories.
The Mercedes-Benz GLS450 received a rating of 3.5 out of 5 stars from RepairPal, which RepairPal describes as Above Average. This rating ranks the Mercedes-Benz GLS450 as 5 out of 20 among Luxury Fullsize SUV
Here is what's new for the 2026 Mercedes-Benz GLS450:
- Parking Sensors
- Automated Parking
- 20 Inch Plus Wheels
- Remote Start
- Navigation System
The 2026 Mercedes-Benz GLS450 offers the following fuel efficiency options: • Gas: 19 city / 24 highway MPG Actual mileage may vary based on driving conditions, vehicle condition, and driving habits.
We hope you found this information helpful. This content is intended to inform and is not meant to indicate that a particular vehicle is currently available or recommended for you.
Statements of fuel economy or EV range are based on EPA and other third-party estimates for vehicles when new. Fuel economy and EV range will degrade with time and vary based on age, driving conditions, vehicle history, and other conditions. See fueleconomy.gov for more info.
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