2021 Mercedes-Benz GLB 200 AMG Line Premium Auto 1.3L Petrol · RJ71 ACF

The most recent MOT test on 2025-11-24 confirms the vehicle remains roadworthy, with no defects recorded at 24,817 miles. The preceding test on 2024-12-06 also passed without issues, though the record shows a failed test on 2024-11-29 at just 19,497 miles—an anomaly given the subsequent pass only nine days later. This suggests either a temporary oversight in testing or a minor, quickly resolved issue, but no recurring faults have been documented. The trend over the past year is stable, with no repeated advisories or defects, though the brief failure warrants scrutiny of what may have been addressed between tests. The recorded mileage of 24,817 miles over approximately five years—roughly 4,963 miles annually—is unusually low for a vehicle of this age, particularly given the GLB’s typical usage patterns. The gap between the 2024 failure (19,497 miles) and the 2024 pass (19,580 miles) indicates minimal driving between tests, which could imply extended periods of non-use or storage. This low mileage may mask deeper issues, as components like suspension bushes, coil springs, and brake calipers degrade over time regardless of distance travelled. Conversely, it could also mean the vehicle has been well-maintained in a controlled environment, but this cannot be confirmed without service records. Given the lack of defects in recent tests, the primary focus for an in-person inspection should centre on the suspension system, particularly the rear axle, as AMG-line vehicles often experience premature wear in bushings and dampers. The brief 2024 failure suggests a potential oversight in pre-test checks, so verifying the condition of brake binding, caliper wear, and disc thickness—especially rear—is critical. Corrosion around wheel arches, subframe mounts, and exhaust systems should also be examined, as prolonged non-use can accelerate rust formation. Finally, the automatic transmission fluid and differential oil should be checked for degradation, as low mileage does not guarantee these have been refreshed according to manufacturer intervals.