DecodedCars2023 Mercedes-Benz GLS-Class
Trims, performance, features, fuel economy, safety and known problems — with the pros and cons against similar 2023 models.
- Class
- Standard Sport Utility Vehicle 4WD
- Body styles
- 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)
- 20 combined · 18 city / 23 hwy
- Length
- 205.1 in
- Curb weight
- 5,468–5,754 lb
- NHTSA rating
- Not rated
- Recalls
- 0 campaigns
Pros & cons
What's good
- Hybrid version availableOffered as a hybrid as well as gas.
- No recalls so far
Watch out for
- Premium fuel requiredEvery gasoline version is rated for premium, which raises running costs.
Calculated from EPA, NHTSA and vPIC data against 21 similar 2023 models — not a review. How we calculate this →
Overview
The 2023 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 205 inches long and 80 inches wide on a 123-inch wheelbase, with a curb weight of roughly 5,468 lb (Gls 450 4matic 4dr SUV).
EPA rates its most efficient version at 20 MPG combined (18 city / 23 highway), 6% better than the 2023 standard SUV average of 18.8 MPG, for an estimated $4,100 a year in fuel.
NHTSA has not published a 5-Star overall rating for this model year.
There are no recalls or owner complaints on file with NHTSA for this model year.
What changed for 2023
No changes to engines, powertrains, drivetrains, size, EPA ratings or NHTSA crash rating compared with the 2022 GLS-Class — a carry-over year in the data.
Compared with 2022; trim, feature and price changes aren't covered. See the 2022 GLS-Class →
Dimensions & weight
| Body | Length | Width | Height | Wheelbase | Track F / R | Curb weight | Weight F/R |
|---|---|---|---|---|---|---|---|
| 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 | 18 / 23 / 20 | +6% | $4,100 | 433 |
| GLS580 4matic Hybrid | 4.0L 8-cyl turbo | Automatic 9-spd | All-Wheel Drive | 16 / 21 / 18 | -4% | $4,550 | 499 |
| GLS600 4matic Maybach Hybrid | 4.0L 8-cyl turbo | Automatic 9-spd | All-Wheel Drive | 15 / 20 / 17 | -10% | $4,850 | 528 |
| AMG GLS63 4matic Plus Hybrid | 4.0L 8-cyl turbo | Automatic 9-spd | All-Wheel Drive | 14 / 19 / 16 | -15% | $5,150 | 560 |
EPA estimates; "vs. class" is combined MPG against the 2023 EPA class average. How we calculate this →
Safety ratings & technology
NHTSA has not published 5-Star ratings for the 2023 Mercedes-Benz GLS-Class.
Similar 2023 standard SUVs
| Model | Best MPG / range | NHTSA overall | Recalls |
|---|---|---|---|
| 2023 Mercedes-Benz GLS-Class (this car) | 20 MPG | Not rated | 0 |
| 2023 Land Rover Range Rover | 23 MPG | Not rated | 17 |
| 2023 Audi Q7 | 21 MPG | Not rated | 3 |
| 2023 Tesla Model X | 348 mi | Not rated | 17 |
| 2023 Land Rover Discovery | 22 MPG | Not rated | 6 |
| 2023 Lexus LX | 19 MPG | Not rated | 5 |
| 2023 Lincoln Navigator | 19 MPG | Not rated | 8 |
Recalls (0)
No vehicle recalls on file with NHTSA for the 2023 Mercedes-Benz GLS-Class.
Check your VIN for open recalls at NHTSA ↗Not every 2023 Mercedes-Benz GLS-Class is affected — only a VIN check confirms your car.
Owner-reported problems
No owner complaints for the 2023 Mercedes-Benz GLS-Class in NHTSA's database since 2015.
Used 2023 Mercedes-Benz GLS-Class buyer's checklist
- Run the VIN at nhtsa.gov/recalls. No recalls on file, but check anyway.
- Hybrid system. Check for hybrid-system warning lights and ask whether the high-voltage battery has been replaced or is still under warranty.
- Before you pay: service records, a history report and an independent inspection.
Generated by DecodedCars from NHTSA recalls and owner complaints for the 2023 Mercedes-Benz GLS-Class. Not a substitute for a professional inspection.
Other GLS-Class years
Compare all years →| Year | MPG (best) | Length | Overall | Recalls | Complaints |
|---|---|---|---|---|---|
| 2027 GLS-Class | 21 | – | Not rated | 0 | 0 |
| 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 |
| 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 →