2012 Chrysler 300 C 3.0L Diesel · J3 OOC

This Chrysler 300 C has demonstrated a stable roadworthiness trend over the past three MOT cycles, with the most recent test on 2023-06-29 confirming full compliance at 215,886 miles. The absence of defects across all three tests—including the 2023 failure, which curiously recorded no issues despite the retest—suggests either meticulous maintenance or a vehicle that has not yet exhibited critical failures. However, the 2023 failure itself is unusual, as it was followed by an immediate retest without any noted remedial work, raising questions about the nature of the original concern. The lack of advisories or recurring faults in the record implies no obvious pattern of neglect, though the high mileage demands thorough scrutiny of high-wear components. The recorded mileage of 215,886 miles over approximately 14 years equates to an average of 15,420 miles annually, which is elevated for a vehicle of this age. The gap between the 2022 test at 205,465 miles and the 2023 failure at 215,862 miles represents roughly 10,400 miles in under a year, indicating rapid usage. This accelerated mileage accumulation could accelerate wear on suspension bushes, coil springs, and drivetrain components, particularly if the vehicle was subjected to heavy loads or aggressive driving. The absence of intermediate MOTs or service records means there is no visibility into whether maintenance was performed between tests, leaving critical components like brake calipers, binding brakes, and exhaust emissions systems open to speculation. Given the lack of recorded defects, a buyer should prioritise an in-person inspection of suspension integrity, particularly the rear axle and bushings, which are common failure points at this mileage. The binding brakes advisory in the 2023 failure—despite no defects being logged—warrants immediate attention to rear brake calipers, rotor runout, and hydraulic fluid condition. Corrosion checks are essential, especially around wheel arches, subframes, and exhaust mounts, as prolonged high mileage increases the risk of structural fatigue. Tyre tread depth and uniformity should also be verified, as the vehicle has not failed on this criterion, but uneven wear could indicate alignment or suspension issues. Finally, the engine bay and exhaust system should be examined for leaks, as emissions-related failures are often silent until they become severe.