2012 Mercedes-Benz CLS 3.0L Diesel · 54 JAN

Chronic corrosion of the front brake pipes has emerged as the primary mechanical concern for this vehicle, marking a shift from a previously flawless testing record. While the car passed its latest inspection on 2026-02-24, the reappearance of advisories for both nearside and offside front brake pipes suggests a persistent degradation of the braking system's structural integrity. This trend indicates that the corrosion is not being adequately remediated, despite the vehicle maintaining its roadworthiness certificate. A total recorded mileage of 55,633 miles over fourteen years represents a low annual accumulation rate of approximately 3,974 miles. Such low usage often implies the vehicle has spent significant periods stationary or has been used for short journeys, which can contribute to the type of surface corrosion seen on the brake lines. Mechanically, while the drivetrain and engine components may have seen less wear than average, the low mileage increases the likelihood of rubber components perishing and fluid-related degradation due to inactivity. Immediate attention must be given to the front brake pipes, as the record specifically notes they are covered in grease or other material, a common tactic used to mask corrosion from inspectors. A physical inspection should be conducted to determine if the pipes require replacement to prevent a sudden failure. Additionally, the nearside front tyre has a history of cuts and perishing, which now manifests as cracking in the latest report, necessitating a close examination of the sidewall integrity. During a test drive, pay close attention to the brake pedal for any sponginess or inconsistent pressure that could indicate compromised lines. Check for any uneven steering or vibrations at speed, which may be linked to the recorded tyre damage. Ensure the braking system responds linearly and without judder, as the recurring corrosion advisories suggest the front braking assembly is the most vulnerable area of the vehicle's current mechanical state.