DecodedCars2021 Mercedes-Benz G-Class
Trims, performance, features, fuel economy, safety and known problems — with the pros and cons against similar 2021 models.
- Class
- Standard Sport Utility Vehicle 4WD
- Body styles
- 550 4dr SUV, 63 Amg 4dr SUV
- Engines
- 4.0L 8-cyl turbo
- Drivetrain
- 4-Wheel Drive
- Fuel
- Premium Gasoline
- MPG (best)
- 18 combined · 17 city / 19 hwy
- Length
- 181.9 in
- Curb weight
- 5,479–5,820 lb
- NHTSA rating
- Not rated
- Recalls
- 0 campaigns
Pros & cons
What's good
- 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 13 similar 2021 models — not a review. How we calculate this →
Overview
The 2021 Mercedes-Benz G-Class is a standard SUV offered with a 4.0L 8-cyl turbo engine and 4-wheel drive.
It measures about 182 inches long and 76 inches wide on a 114-inch wheelbase, with a curb weight of roughly 5,479 lb (550 4dr SUV).
EPA rates its most efficient version at 18 MPG combined (17 city / 19 highway), 4% worse than the 2021 standard SUV average of 18.8 MPG, for an estimated $4,550 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 2021
- Best combined MPG up from 14 to 18
Compared with 2020; trim, feature and price changes aren't covered. See the 2020 G-Class →
Dimensions & weight
| Body | Length | Width | Height | Wheelbase | Track F / R | Curb weight | Weight F/R |
|---|---|---|---|---|---|---|---|
| 550 4dr SUV | 181.9 in | 76 in | 77.6 in | 113.8 in | 64.6 / 64.6 in | 5,479 lb | 53/47 |
| 63 Amg 4dr SUV | 181.9 in | 78 in | 77.6 in | 113.8 in | 65 / 65 in | 5,820 lb | 54/46 |
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 |
|---|---|---|---|---|---|---|---|
| G550 | 4.0L 8-cyl turbo | Automatic 9-spd | 4-Wheel Drive | 17 / 19 / 18 | -4% | $4,550 | 494 |
| AMG G63 | 4.0L 8-cyl turbo | Automatic 9-spd | 4-Wheel Drive | 13 / 16 / 14 | -26% | $5,850 | 637 |
EPA estimates; "vs. class" is combined MPG against the 2021 EPA class average. How we calculate this →
Safety ratings & technology
NHTSA has not published 5-Star ratings for the 2021 Mercedes-Benz G-Class.
Similar 2021 standard SUVs
| Model | Best MPG / range | NHTSA overall | Recalls |
|---|---|---|---|
| 2021 Mercedes-Benz G-Class (this car) | 18 MPG | Not rated | 0 |
| 2021 Tesla Model Y | 326 mi | Not rated | 23 |
| 2021 Land Rover Defender | 19 MPG | Not rated | 9 |
| 2021 BMW X3 | 27 MPG | ★★★★★ | 10 |
| 2021 Porsche Macan | 21 MPG | Not rated | 1 |
| 2021 BMW X4 | 25 MPG | Not rated | 7 |
| 2021 Jaguar I-Pace | 234 mi | Not rated | 6 |
Recalls (0)
No vehicle recalls on file with NHTSA for the 2021 Mercedes-Benz G-Class.
Check your VIN for open recalls at NHTSA ↗Not every 2021 Mercedes-Benz G-Class is affected — only a VIN check confirms your car.
Owner-reported problems
No owner complaints for the 2021 Mercedes-Benz G-Class in NHTSA's database since 2015.
Used 2021 Mercedes-Benz G-Class buyer's checklist
- Run the VIN at nhtsa.gov/recalls. No recalls on file, but check anyway.
- Before you pay: service records, a history report and an independent inspection.
Generated by DecodedCars from NHTSA recalls and owner complaints for the 2021 Mercedes-Benz G-Class. Not a substitute for a professional inspection.
Other G-Class years
Compare all years →| Year | MPG (best) | Length | Overall | Recalls | Complaints |
|---|---|---|---|---|---|
| 2027 G-Class | 15 | – | Not rated | 0 | 0 |
| 2026 G-Class | 18 | 181.9 in | Not rated | 0 | 0 |
| 2025 G-Class | 18 | 181.9 in | Not rated | 0 | 0 |
| 2024 G-Class | 14 | 181.9 in | Not rated | 0 | 0 |
| 2023 G-Class | 14 | 181.9 in | Not rated | 0 | 0 |
| 2022 G-Class | 16 | 181.9 in | Not rated | 0 | 0 |
| 2020 G-Class | 14 | 181.9 in | Not rated | 0 | 0 |
| 2019 G-Class | 14 | 181.5 in | Not rated | 0 | 0 |
| 2018 G-Class | 13 | 174.8 in | Not rated | 0 | 0 |
| 2017 G-Class | 13 | 174.8 in | Not rated | 0 | 0 |
| 2016 G-Class | 13 | 174.8 in | Not rated | 0 | 0 |
| 2015 G-Class | 13 | 174.8 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 →