2019 Mercedes-Benz CLS 400 D AMG Line 4MATIC Auto 2.9L Diesel · UIB 110

The 2019 Mercedes-Benz CLS 400 D AMG Line 4MATIC has demonstrated overall stability through five consecutive MOT tests spanning from January 2023 to January 2026, with four clean passes preceding the single failed examination on 2023-01-10. The most recent test on 2026-01-19 also returned a passing result with no recorded defects, indicating continued compliance with DVSA standards despite the intervening interval. This pattern of regular successful assessments contrasts with the earlier failure, suggesting the vehicle has maintained acceptable roadworthiness levels since its last confirmed lapse of performance. At 115,119 miles after seven years of ownership, the vehicle accumulates approximately 16,446 miles annually—a rate significantly higher than typical usage for a seven-year-old large luxury sedan. Such elevated mileage accelerates normal wear across the powertrain, suspension system, and braking components, meaning components that would normally require attention within three to five years may now exhibit noticeable degradation. The gap between the 2023 failed MOT and the subsequent passes indicates a period where the vehicle remained below regulatory thresholds before encountering an issue that triggered the failure, followed by recovery through proper maintenance to restore compliance. Based on the high mileage accumulation, particular attention should be given to the suspension bushings and control arm pivots, as excessive travel and hard-pitting in worn mounts become more probable with such cumulative distance. During a test drive, listen for any knocking or clunking over speed bumps or uneven pavement, as these symptoms often signal deteriorating suspension bushings or worn tie rod ends. The brake system warrants close monitoring too, particularly the rear brake lines and caliper housings, since heavy mileage subjects these components to greater thermal cycling and fluid exposure, potentially leading to minor leaks or reduced braking consistency. Before committing, arrange an independent inspection that specifically checks the subframe for rust penetration—high mileage vehicles are prone to subframe corrosion, especially in areas exposed to road salt and wet conditions—and verify that the rear suspension bushings show no signs of cracking or extrusion. Test drive the vehicle slowly around a familiar route to assess steering feedback and look for any pulling to one side, which could indicate misalignment or worn ball joints. Given the high mileage and the earlier failed MOT, confirming the condition of the main brakes, including pad thickness and rotor surface, will help determine whether replacement is imminent before purchase.