2004 Mercedes-Benz C 1.8L Petrol · AF04 KHJ

The current roadworthiness status of this 2004 Mercedes-Benz C-Class is compromised following a failed MOT test on 4 April 2026 at 139,141 miles. Curiously, this failure recorded zero defects, which typically indicates an administrative rejection, an abandoned inspection, or an unresolved procedural issue rather than a specific mechanical fault. Prior to this, the maintenance trend remained exceptionally stable, with consecutive passes in 2022, 2023, and 2025 showing no recorded defects whatsoever. The abrupt failure in April 2026 breaks this clean streak and requires immediate clarification from the seller regarding the exact reason for the test outcome. The vehicle's mileage accumulation aligns reasonably well with its 22-year age, averaging roughly 6,325 miles annually. Between March 2022 and November 2023, the car covered approximately 9,700 miles, demonstrating consistent use. However, the mileage pattern shifts notably in the most recent period. From the November 2023 test at 128,174 miles to the April 2025 test at 136,507 miles, the vehicle accrued 8,333 miles over roughly seventeen months. In the subsequent twelve months leading to the April 2026 failure, mileage increased by only 2,634 miles. This sharp reduction suggests the vehicle has been standing for extended periods or used sparingly, which can introduce its own set of deterioration issues. Given the absence of recurring mechanical advisories in the record, a buyer should focus on the risks associated with low-mileage, sporadic use and the unexplained April 2026 failure. Extended periods of standing can cause brake calipers to bind, tyres to develop flat spots, and suspension bushes to perish. A thorough in-person inspection must verify the structural integrity of the undercarriage, checking for corrosion on the sills, subframes, and brake lines, which can deteriorate rapidly regardless of mileage. The braking system requires particular scrutiny; seized calipers and pitted brake discs are common on vehicles that sit idle. Furthermore, the exhaust system and rubber components, such as engine mounts and coolant hoses, must be examined for age-related cracking. Crucially, the buyer must obtain the exact failure notice from the April 2026 test to determine whether the vehicle requires a full retest before it can legally return to the road.