DecodedCars2020 Mercedes-Benz G-Class
Trims, performance, features, fuel economy, safety and known problems — with the pros and cons against similar 2020 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)
- 14 combined · 13 city / 17 hwy
- Length
- 181.9 in
- Curb weight
- 5,479–5,820 lb
- NHTSA rating
- Not rated
- Recalls
- 0 campaigns
Pros & cons
What's good
- Few owner complaints0 complaints filed with NHTSA versus about 24 for similar models.
- No recalls so far
Watch out for
- Below-average fuel economyBest version gets 14 MPG combined, 26% below the 2020 standard SUV average of 18.8 MPG.
- Premium fuel requiredEvery gasoline version is rated for premium, which raises running costs.
Calculated from EPA, NHTSA and vPIC data against 11 similar 2020 models — not a review. How we calculate this →
Overview
The 2020 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 14 MPG combined (13 city / 17 highway), 26% worse than the 2020 standard SUV average of 18.8 MPG, for an estimated $5,850 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 2020
- Lightest version 187 lb lighter
Compared with 2019; trim, feature and price changes aren't covered. See the 2019 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 |
|---|---|---|---|---|---|---|---|
| AMG G63 | 4.0L 8-cyl turbo | Automatic 9-spd | 4-Wheel Drive | 13 / 15 / 14 | -26% | $5,850 | 637 |
| G550 | 4.0L 8-cyl turbo | Automatic 9-spd | 4-Wheel Drive | 13 / 17 / 14 | -26% | $5,850 | 609 |
EPA estimates; "vs. class" is combined MPG against the 2020 EPA class average. How we calculate this →
Safety ratings & technology
NHTSA has not published 5-Star ratings for the 2020 Mercedes-Benz G-Class.
Similar 2020 standard SUVs
| Model | Best MPG / range | NHTSA overall | Recalls |
|---|---|---|---|
| 2020 Mercedes-Benz G-Class (this car) | 14 MPG | Not rated | 0 |
| 2020 Land Rover Defender | 19 MPG | Not rated | 7 |
| 2020 BMW X3 | 27 MPG | ★★★★★ | 16 |
| 2020 Porsche Macan | 21 MPG | Not rated | 2 |
| 2020 BMW X4 | 25 MPG | Not rated | 10 |
| 2020 Jaguar I-Pace | 234 mi | Not rated | 8 |
| 2020 Jaguar F-Pace | 24 MPG | Not rated | 2 |
Recalls (0)
No vehicle recalls on file with NHTSA for the 2020 Mercedes-Benz G-Class.
Check your VIN for open recalls at NHTSA ↗Not every 2020 Mercedes-Benz G-Class is affected — only a VIN check confirms your car.
Owner-reported problems
No owner complaints for the 2020 Mercedes-Benz G-Class in NHTSA's database since 2015.
Used 2020 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 2020 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 |
| 2021 G-Class | 18 | 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 →