The Verdict
Worst problem area
Engine
The only complaint filed mentions Engine.
Complaints filed rose from 0 in 2025 to 1 in 2026.
At a glance
- NHTSA complaints
- 1
- Recall campaigns
- 0
- EPA fuel cost per year
- $3,700–$5,150
- Combined MPG
- 15–21
Complaints by model year
Where owners report problems
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Cost, Fuel Economy & Complaint History
| Category | 2024 | 2025 | 2026 | 2027 | vs. 2026 Standard Sport Utility Vehicle 4WD |
|---|---|---|---|---|---|
| Annual fuel cost ($) | 3,700–4,850 | 3,700–5,150 | 3,700–5,150 | 3,700–4,850 | |
| Combined MPG | 16–21 | 15–21 | 15–21 | 16–21 | |
| City / Highway MPG | 14–19 / 18–24 | 13–19 / 18–24 | 13–19 / 18–24 | 14–19 / 19–24 | |
| CO₂ tailpipe (g/mi) | 428–574 | 428–588 | 428–585 | 424–544 | |
| Complaints filed | 0 | 0 | 1 | 0 | |
| Recalls issued | 0 | 0 | 0 | 0 | |
| Crash-involved complaints | 0 | 0 | 0 | 0 | |
| Fire-involved complaints | 0 | 0 | 0 | 0 | |
| Injuries reported | 0 | 0 | 0 | 0 | |
| Deaths reported | 0 | 0 | 0 | 0 | |
| Configurations compared | 4 | 4 | 4 | 3 |
Not compared: this database has no vehicle sales or registration figures, so a raw count mostly reflects how many were sold, not how safe the vehicle is.
Common questions
How many recalls does the 2026 Mercedes-Benz GLS-Class have?
No NHTSA recall campaigns as of Nov 7, 2026.
What gas mileage does the 2026 Mercedes-Benz GLS-Class get?
EPA rates it 15–21 MPG combined across 4 configurations.
How much does it cost to fuel a 2026 Mercedes-Benz GLS-Class?
EPA estimates $3,700–$5,150 a year in fuel costs, using EPA's assumptions.
Similar Vehicles
EPA-Rated Configurations (4)
| Configuration | Transmission | Cylinders | Displacement | Drivetrain | Fuel Type | Vehicle Class | City | Highway | Combined | Annual Fuel Cost | CO₂ |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Configuration 1 | Automatic 9-spd | 8 | 4.0L | All-Wheel Drive | Premium | Standard Sport Utility Vehicle 4WD | 15 mpg | 20 mpg | 17 mpg | $4,550 | 538 g/mi |
| Configuration 2 | Automatic 9-spd | 8 | 4.0L | All-Wheel Drive | Premium | Standard Sport Utility Vehicle 4WD | 13 mpg (low) | 18 mpg (low) | 15 mpg (low) | $5,150 (high) | 585 g/mi (high) |
| Configuration 3 | Automatic 9-spd | 8 | 4.0L | All-Wheel Drive | Premium | Standard Sport Utility Vehicle 4WD | 14 mpg | 20 mpg | 16 mpg | $4,850 | 539 g/mi |
| Configuration 4 | Automatic 9-spd | 6 | 3.0L | All-Wheel Drive | Premium | Standard Sport Utility Vehicle 4WD | 19 mpg (high) | 24 mpg (high) | 21 mpg (high) | $3,700 (low) | 428 g/mi (low) |
Complaints by Category
| Category | Complaints | Crash-Involved | Fire-Involved | Injuries | Deaths |
|---|---|---|---|---|---|
| Engine | 1 | 0 | 0 | 0 | 0 |
| Transmission & Drivetrain | 1 | 0 | 0 | 0 | 0 |
| Fuel System | 0 | 0 | 0 | 0 | 0 |
| Electrical | 0 | 0 | 0 | 0 | 0 |
| Brakes | 0 | 0 | 0 | 0 | 0 |
| Steering | 0 | 0 | 0 | 0 | 0 |
| Suspension, Wheels & Tires | 0 | 0 | 0 | 0 | 0 |
| Airbags & Restraints | 0 | 0 | 0 | 0 | 0 |
| Driver Assistance & Speed Control | 0 | 0 | 0 | 0 | 0 |
| Body, Seats & Latches | 0 | 0 | 0 | 0 | 0 |
| Visibility & Lighting | 0 | 0 | 0 | 0 | 0 |
| Other | 0 | 0 | 0 | 0 | 0 |
A complaint that names more than one category is counted in each, so the rows can add up to more than the total number of complaints.
Recalls
No recalls have been issued for this model-year.