DecodedCars2027 Mercedes-Benz GLS-Class
Trims, performance, features, fuel economy, safety and known problems — with the pros and cons against similar 2027 models.
- Class
- Standard Sport Utility Vehicle 4WD
- Engines
- 3.0L 6-cyl turbo
- Drivetrain
- All-Wheel Drive
- Fuel
- Hybrid
- MPG (best)
- 21 combined · 19 city / 24 hwy
- Length
- –
- Curb weight
- –
- 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 26 similar 2027 models — not a review. How we calculate this →
Overview
The 2027 Mercedes-Benz GLS-Class is a standard SUV offered with a 3.0L 6-cyl turbo engine, including a hybrid version and all-wheel drive.
EPA rates its most efficient version at 21 MPG combined (19 city / 24 highway), 8% better than the 2027 standard SUV average of 19.4 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 2027
No changes to engines, powertrains, drivetrains, size, EPA ratings or NHTSA crash rating compared with the 2026 GLS-Class — a carry-over year in the data.
Compared with 2026; trim, feature and price changes aren't covered. See the 2026 GLS-Class →
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 | +8% | $3,900 | 424 |
EPA estimates; "vs. class" is combined MPG against the 2027 EPA class average. How we calculate this →
Safety ratings & technology
NHTSA has not published 5-Star ratings for the 2027 Mercedes-Benz GLS-Class.
Similar 2027 standard SUVs
| Model | Best MPG / range | NHTSA overall | Recalls |
|---|---|---|---|
| 2027 Mercedes-Benz GLS-Class (this car) | 21 MPG | Not rated | 0 |
| 2027 Mercedes-Benz G-Class | 15 MPG | Not rated | 0 |
| 2027 Land Rover Range Rover | 22 MPG | Not rated | 5 |
| 2027 BMW X5 | 26 MPG | Not rated | 0 |
| 2027 Land Rover Defender | 18 MPG | Not rated | 0 |
| 2027 Cadillac Escalade | 17 MPG | Not rated | 0 |
| 2027 Volvo XC90 | 25 MPG | Not rated | 0 |
Recalls (0)
No vehicle recalls on file with NHTSA for the 2027 Mercedes-Benz GLS-Class.
Check your VIN for open recalls at NHTSA ↗Not every 2027 Mercedes-Benz GLS-Class is affected — only a VIN check confirms your car.
Owner-reported problems
No owner complaints for the 2027 Mercedes-Benz GLS-Class in NHTSA's database since 2015.
Other GLS-Class years
Compare all years →| Year | MPG (best) | Length | Overall | Recalls | Complaints |
|---|---|---|---|---|---|
| 2026 GLS-Class | 21 | 205.9 in | 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 →