2004 Mercedes A-Class 1.7L Diesel · HN54 FPZ

The vehicle presents a mixed but recently stabilising maintenance profile. The most recent test on 1 April 2026 at 104,503 miles passed with only minor advisories: an oil leak not deemed excessive and light misting on the nearside front shock absorber. This follows a clean pass on 11 March 2025 at 97,694 miles with zero defects, suggesting the immediate mechanical condition is sound. However, the record reveals a clear pattern of corrosion-related deterioration that was actively worsening through 2024 and early 2025 before appearing to stabilise. The trend is therefore cautiously improving, but only after a period of significant structural concern. The mileage accumulation is notably low for a 2004 vehicle, averaging roughly 4,750 miles per year. Between the January 2024 test at 91,114 miles and the March 2025 test at 97,699 miles, the car covered approximately 6,585 miles in just over 14 months, indicating a period of more regular use. The subsequent jump to 104,503 miles by April 2026 represents around 6,800 miles in 13 months, confirming sustained recent activity. There are no alarming gaps in the MOT record itself, with tests conducted annually or more frequently, so the mileage pattern appears consistent rather than indicative of long-term storage or clocking concerns. Buyers should focus their physical inspection on the rear suspension and braking system, where the most serious historical defects were concentrated. The January 2025 failure at 97,597 miles flagged excessively corroded nearside and offside rear brake pipes alongside corroded rear coil springs on both sides. These were rectified before the March 2025 pass, but the underlying conditions that caused the corrosion, likely age-related exposure and surface protection breakdown, remain a risk factor. Examine the rear brake lines carefully for fresh replacements and check the coil springs for any renewed pitting or surface corrosion. The rear anti-roll bar was also noted as corroded in January 2024, so inspect its mounting points and link bars for weakness. The front suspension warrants attention too. The April 2026 advisory for light oil misting on the nearside front shock absorber indicates the damper is beginning to seep internally. While not an immediate failure, this will progress and should be monitored against the next test. The lower steering column universal joint showed slight play in both January 2024 tests, so check for any increased movement or clunking during a road test. The centre exhaust silencer was flagged as corroded in 2024, meaning a thorough underside inspection of the full exhaust system is advisable. Overall, the car appears to have received necessary repairs after its 2025 failure, but the corrosion history on critical safety components means a hands-on inspection of the underside, brake system, and suspension is essential before purchase.