2004 Mercedes-Benz S-Class 3.2L Diesel · 3 PXW

The 2004 Mercedes S-Class remains roadworthy as of its most recent MOT on 2025-11-04, passing with minor advisories. However, the maintenance trend shows a worsening pattern over the past two years, with recurring issues in braking systems and suspension components, indicating that while the vehicle is currently compliant, ongoing attention is required to maintain safety and reliability. The vehicle has accumulated 352,039 miles over 22 years, averaging approximately 16,000 miles annually—a high but not uncommon figure for a luxury saloon used in mixed urban and long-distance driving. The MOT history reveals a consistent testing cycle every 12 months, with no significant gaps, allowing for a clear assessment of wear progression. The mileage increased by 10,787 miles between the 2024 and 2025 tests, suggesting active use during that period, though no major defects were recorded in the 2024 test itself. Key concerns include deteriorating rear brake components, with thin pads and scored discs noted in 2023, followed by binding rear brakes in 2025. Suspension bush wear was flagged in 2022, and while not causing excessive movement, it may affect ride quality and alignment. Structural corrosion on the nearside rear body panel is present but not critical, though it warrants monitoring. Tyre wear on both rear wheels is approaching legal limits, indicating potential alignment or suspension issues. A buyer should conduct a thorough inspection of the rear brake system, including calipers and discs, and verify parking brake functionality. Suspension components, particularly the rear lower arms and associated bushes, should be assessed for play or wear. The body corrosion should be evaluated for any progression, and the tyres should be replaced immediately to ensure compliance and safety.