Used car guide
2018 Mercedes-Benz GLS: petrol or diesel?
Petrol, diesel and hybrid versions go wrong in different ways, so each has its own figures from the MOTs these cars had during 2023–2025. Pick the one you’re looking at: the fuel is on the logbook and in the car’s MOT history.
Petrol
88% pass first time (all 2018 cars: 83%)
Nothing stands out above the usual rate
215 MOTsSee the petrol guide ›
Diesel
86% pass first time (all 2018 cars: 83%)
Stands out: drive shaft (cv) joints 8.2×
1,491 MOTsSee the diesel guide ›
Hybrid versions had too few MOTs for figures of their own, or weren’t sold.
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Other years
Every year of the Mercedes-Benz GLS compared
| Year | MOT tests | Most flagged |
|---|---|---|
| 2026 | – | Too new for MOT data |
| 2025 | – | Too new for MOT data |
| 2024 | – | Too new for MOT data |
| 2023 | – | Too new for MOT data |
| 2022 | 358 | Tyres 26% |
| 2021 | 537 | Tyres 26% |
| 2020 | 1,189 | Tyres 24% |
| 2019 | 1,158 | Tyres 23% |
| 2017 | 1,879 | Tyres 26% |
| 2016 | 1,195 | Tyres 25% |