2005 Mercedes-Benz C 1.8L Petrol · PE05 ALO

The vehicle holds a valid MOT following a successful retest on 7 April 2026 at 145,531 miles, though the initial failure that same day stemmed from an inoperative engine MIL. The maintenance trajectory shows a clear worsening trend. While early tests recorded isolated consumable wear such as defective wiper blades and worn tyres, recent inspections reveal systemic deterioration in critical mechanical areas. The April 2026 pass carries extensive advisories for corroded rear sub-frame and underbody suspension components, alongside damaged steering rack gaiters and deteriorated anti-roll bar dust covers. Previous owners consistently addressed immediate failures to secure a pass but neglected progressive corrosion, allowing minor advisories to compound into widespread structural and mechanical wear. The mileage accumulation aligns with typical usage for a 21-year-old vehicle, averaging approximately 6,930 miles annually. Records show steady, predictable intervals between tests, with no sudden jumps or prolonged gaps that would suggest hidden mileage or extended storage. The vehicle progressed from 84,107 miles in March 2019 to 145,531 miles in April 2026, indicating consistent road use rather than intermittent or high-speed motorway running. This steady accumulation matches the observed wear pattern, where continuous exposure to road salt and moisture has gradually compromised the chassis and suspension mounting points. A thorough physical inspection must prioritise the rear sub-frame and underbody suspension mounting points, as the tester repeatedly noted corrosion that remains within legal limits but risks structural weakening. Examine the steering assembly closely, since damaged rack gaiters and flagged play in the inner joints and track rod ends point to accelerated wear inside the steering mechanism. The brake system requires careful scrutiny, given the chronic corrosion and grease contamination on the rear brake pipes recorded across multiple years. Verify the engine MIL status and trace the persistent oil and coolant leaks identified in the 2025 and 2026 tests. Replace the corroded coil springs and cracked tyres before winter driving, as the current advisories indicate the chassis is operating at the edge of compliance.