2007 Mercedes-Benz GL 3.0L Diesel · S16 AAT

The vehicle’s most recent MOT test, conducted on 2025-12-31 at 148,089 miles, confirms it passed without any recorded defects, though it had previously failed a test just eight days earlier at the same mileage. This abrupt reversal suggests either a minor oversight in the first inspection or a temporary operational issue that resolved itself before the retest. The pattern of alternating passes and fails in consecutive years—most notably in 2024 and 2025—indicates a lack of consistent mechanical issues, but the repeated retests at identical mileages warrant scrutiny of whether underlying problems were overlooked or whether the vehicle’s condition fluctuated due to seasonal factors or temporary component failures. There is no evidence of progressive deterioration in core systems, but the history does not rule out intermittent faults in areas like braking, suspension, or emissions that may not always manifest during a single MOT inspection. The mileage progression of approximately 7,794 miles per year aligns with typical usage for a vehicle of this age, though the gaps between tests reveal little about long-term maintenance habits. The most notable interval is between the 2023 and 2024 tests, where the vehicle accumulated 3,803 miles in just 11 months, followed by a slower 2,917 miles over the next 12 months. While this variation is not extreme, it suggests periods of higher usage that could accelerate wear on suspension bushes, coil springs, and drivetrain components. The absence of any advisory notes or defects in the MOT records means there are no formal warnings about structural corrosion or failing systems, but the lack of service history or pre-MOT inspections makes it impossible to confirm whether critical components like the transfer case, differential seals, or exhaust manifold have been attended to. Given the vehicle’s age and mileage, a buyer should prioritise an independent inspection of the suspension geometry and condition of the coil springs and bushes, as these are common failure points in high-mileage Mercedes-Benz models. The repeated retests at identical mileages in 2024 and 2025 raise suspicion of binding rear brakes or uneven wear on brake discs, which could indicate misalignment or worn-out caliper slides. Structural integrity should also be assessed, particularly around the wheel arches, subframe, and sills, where corrosion can compromise safety without always being detected during a standard MOT. Finally, the emissions system—though not explicitly flagged—should be tested for leaks or failing catalytic converters, as these often develop gradually and may not appear until a vehicle is under stress or during a specific driving cycle.