Fuel tank: 21 of 21 variants rated.
Mercedes-Benz GLS 400 4MATIC tops the Mercedes-Benz GLS ranking by Fuel tank, at 100 L (26.4 gal US).
Across 21 ranked variants, Fuel tank spans from 90 L (23.8 gal US) to 100 L (26.4 gal US).
| # | Variant | Year | Body | Fuel | Fuel tank |
|---|---|---|---|---|---|
| 1 | Mercedes-Benz GLS 400 4MATIC | 2015 | SUV | Petrol | 100 L (26.4 gal US) |
| 2 | Mercedes-Benz GLS 500 4MATIC | 2015 | SUV | Petrol | 100 L (26.4 gal US) |
| 3 | Mercedes-Benz GLS 63 AMG | 2015 | SUV | Petrol | 100 L (26.4 gal US) |
| 4 | Mercedes-Benz GLS 350 d 4MATIC | 2015 | SUV | Diesel | 100 L (26.4 gal US) |
| 5 | Mercedes-Benz GLS 580 4MATIC | 2026 | SUV | Petrol | 90 L (23.8 gal US) |
| 6 | Mercedes-Benz GLS 63 AMG 4MATIC+ | 2026 | SUV | Petrol | 90 L (23.8 gal US) |
| 7 | Mercedes-Benz Maybach GLS 680 | 2026 | SUV | Petrol | 90 L (23.8 gal US) |
| 8 | Mercedes-Benz GLS 350 d 4MATIC | 2026 | SUV | Diesel | 90 L (23.8 gal US) |
| 9 | Mercedes-Benz GLS 450 d 4MATIC | 2026 | SUV | Diesel | 90 L (23.8 gal US) |
| 10 | Mercedes-Benz GLS 450 4MATIC Exclusive Line | 2023 | SUV | Petrol | 90 L (23.8 gal US) |
| 11 | Mercedes-Benz GLS 450 4MATIC AMG Line | 2023 | SUV | Petrol | 90 L (23.8 gal US) |
| 12 | Mercedes-Benz GLS 580 4MATIC AMG Line | 2023 | SUV | Petrol | 90 L (23.8 gal US) |
| 13 | Mercedes-Benz Maybach GLS 600 4MATIC | 2023 | SUV | Petrol | 90 L (23.8 gal US) |
| 14 | Mercedes-Benz GLS 63 AMG 4MATIC+ | 2023 | SUV | Petrol | 90 L (23.8 gal US) |
| 15 | Mercedes-Benz GLS 450 d 4MATIC Exclusive Line | 2023 | SUV | Diesel | 90 L (23.8 gal US) |
| 16 | Mercedes-Benz GLS 450 d 4MATIC AMG Line | 2023 | SUV | Diesel | 90 L (23.8 gal US) |
| 17 | Mercedes-Benz GLS 450 4MATIC | 2020 | SUV | Petrol | 90 L (23.8 gal US) |
| 18 | Mercedes-Benz Maybach GLS 600 4MATIC | 2020 | SUV | Petrol | 90 L (23.8 gal US) |
| 19 | Mercedes-Benz GLS 63 AMG 4MATIC+ | 2020 | SUV | Petrol | 90 L (23.8 gal US) |
| 20 | Mercedes-Benz GLS 580 4MATIC | 2019 | SUV | Petrol | 90 L (23.8 gal US) |
| 21 | Mercedes-Benz GLS 400 d 4MATIC | 2019 | SUV | Diesel | 90 L (23.8 gal US) |