DecodedCars2026 Mercedes-Benz GLS-Class
Trims, performance, features, fuel economy, safety and known problems — with the pros and cons against similar 2026 models.
- Class
- Standard Sport Utility Vehicle 4WD
- Body styles
- Amg 63 4matic 4dr SUV, Gls 450 4matic 4dr SUV, Gls 580 4matic 4dr SUV
- Engines
- 3.0L 6-cyl turbo, 4.0L 8-cyl turbo
- Drivetrain
- All-Wheel Drive
- Fuel
- Hybrid
- MPG (best)
- 21 combined · 19 city / 24 hwy
- Length
- 205.1–205.9 in
- Curb weight
- 5,468–6,074 lb
- NHTSA rating
- Not rated
- Recalls
- 0 campaigns
Pros & cons
What's good
- Hybrid version availableOffered as a hybrid as well as gas.
Watch out for
- Premium fuel requiredEvery gasoline version is rated for premium, which raises running costs.
Calculated from EPA, NHTSA and vPIC data against 23 similar 2026 models — not a review. How we calculate this →
Overview
The 2026 Mercedes-Benz GLS-Class is a standard SUV offered with 2 engines (3.0L 6-cyl turbo and 4.0L 8-cyl turbo), including a hybrid version and all-wheel drive.
It measures about 206 inches long and 80 inches wide on a 123-inch wheelbase, with a curb weight of roughly 6,074 lb (Amg 63 4matic 4dr SUV).
EPA rates its most efficient version at 21 MPG combined (19 city / 24 highway), 5% better than the 2026 standard SUV average of 20 MPG, for an estimated $3,900 a year in fuel.
There are no recalls or owner complaints on file with NHTSA for this model year.
What changed for 2026
No changes to engines, powertrains, drivetrains, size, EPA ratings or NHTSA crash rating compared with the 2025 GLS-Class — a carry-over year in the data.
Compared with 2025; trim, feature and price changes aren't covered. See the 2025 GLS-Class →
Dimensions & weight
| Body | Length | Width | Height | Wheelbase | Track F / R | Curb weight | Weight F/R |
|---|---|---|---|---|---|---|---|
| Amg 63 4matic 4dr SUV | 205.9 in | 79.9 in | 71.7 in | 123.2 in | 66.9 / 68.1 in | 6,074 lb | 53/47 |
| Gls 450 4matic 4dr SUV | 205.1 in | 79.9 in | 71.7 in | 123.2 in | 66.9 / 68.1 in | 5,468 lb | 53/47 |
| Gls 580 4matic 4dr SUV | 205.1 in | 79.9 in | 71.7 in | 123.2 in | 66.9 / 68.1 in | 5,754 lb | 53/47 |
Transport Canada CVS (Open Government Licence – Canada), Canadian-market figures.
Will it fit your garage? Check with your measurements →Engines, MPG & running costs
| Version | Engine | Transmission | Drive | City / Hwy / Comb | vs. class | Fuel / yr | CO₂ g/mi |
|---|---|---|---|---|---|---|---|
| GLS450 4matic Hybrid | 3.0L 6-cyl turbo | Automatic 9-spd | All-Wheel Drive | 19 / 24 / 21 | +5% | $3,900 | 428 |
| AMG GLS63 4matic Plus Hybrid | 4.0L 8-cyl turbo | Automatic 9-spd | All-Wheel Drive | 15 / 20 / 17 | -15% | $4,850 | 538 |
| GLS580 4matic Hybrid | 4.0L 8-cyl turbo | Automatic 9-spd | All-Wheel Drive | 14 / 20 / 16 | -20% | $5,150 | 539 |
| GLS600 4matic Maybach Hybrid | 4.0L 8-cyl turbo | Automatic 9-spd | All-Wheel Drive | 13 / 18 / 15 | -25% | $5,500 | 585 |
EPA estimates; "vs. class" is combined MPG against the 2026 EPA class average. How we calculate this →
Safety ratings & technology
NHTSA has not published 5-Star ratings for the 2026 Mercedes-Benz GLS-Class.
Similar 2026 standard SUVs
| Model | Best MPG / range | NHTSA overall | Recalls |
|---|---|---|---|
| 2026 Mercedes-Benz GLS-Class (this car) | 21 MPG | Not rated | 0 |
| 2026 Land Rover Range Rover | 23 MPG | Not rated | 5 |
| 2026 Audi Q7 | 22 MPG | Not rated | 1 |
| 2026 Tesla Model X | 352 mi | Not rated | 0 |
| 2026 Lexus LX | 20 MPG | Not rated | 1 |
| 2026 Lexus GX | 17 MPG | Not rated | 0 |
| 2026 Lincoln Navigator | 17 MPG | Not rated | 2 |
Recalls (0)
No vehicle recalls on file with NHTSA for the 2026 Mercedes-Benz GLS-Class.
Check your VIN for open recalls at NHTSA ↗Not every 2026 Mercedes-Benz GLS-Class is affected — only a VIN check confirms your car.
Owner-reported problems
No owner complaints for the 2026 Mercedes-Benz GLS-Class in NHTSA's database since 2015.
Other GLS-Class years
Compare all years →| Year | MPG (best) | Length | Overall | Recalls | Complaints |
|---|---|---|---|---|---|
| 2027 GLS-Class | 21 | – | Not rated | 0 | 0 |
| 2025 GLS-Class | 21 | 205.9 in | Not rated | 0 | 0 |
| 2024 GLS-Class | 21 | 205.1 in | Not rated | 0 | 0 |
| 2023 GLS-Class | 20 | 205.1 in | Not rated | 0 | 0 |
| 2022 GLS-Class | 20 | 205.1 in | Not rated | 0 | 0 |
| 2021 GLS-Class | 21 | 205.1 in | Not rated | 0 | 0 |
| 2020 GLS-Class | 21 | 205.1 in | Not rated | 0 | 0 |
| 2019 GLS-Class | 18 | 202 in | Not rated | 0 | 0 |
| 2018 GLS-Class | 19 | 202 in | Not rated | 0 | 0 |
| 2017 GLS-Class | 19 | 202 in | Not rated | 0 | 0 |
Sources: EPA, NHTSA, Transport Canada, Wikimedia Commons. Not affiliated with NHTSA, the EPA or Mercedes-Benz. How we calculate this →