2005 Mercedes-Benz S-Class 3.2L Diesel · YR55 LMY

The 2005 Mercedes S-Class presents a stable and improving maintenance trend, culminating in a clean pass on 12 September 2022 at 125,280 miles with zero defects recorded. That is a significant turnaround compared to the string of advisories and minor failures logged in the preceding years. The 2021 test at 123,056 miles was also completely clean, suggesting the last two MOT cycles addressed earlier corrosion and wear issues rather than simply masking them. The vehicle appears to have been under more attentive ownership recently, though the gap between the September 2022 pass and today, 16 June 2026, means the current MOT has expired and a fresh inspection is essential before any purchase decision. The mileage profile tells an unusual story for a 21-year-old luxury saloon. At roughly 5,966 miles per year, annual use sits well below the UK average of around 7,000 to 8,000 miles. More striking is the sharp drop in usage after August 2020, when the odometer read 111,718 miles. By September 2021 it had climbed to 123,056 miles, a jump of 11,338 miles in just over twelve months, yet by September 2022 it had moved only 2,224 miles to 125,280. That near-plateau over the final recorded year suggests the car may have stood for extended periods. Prolonged sitting can cause flat-spotted tyres, seized brake calipers, perished rubber hoses, and localised corrosion in brake lines and exhaust components, all of which have appeared on this vehicle's earlier MOT records. Buyers should focus their physical inspection on the areas that historically flagged defects. The rear exhaust mountings were defective in August 2020, so check for fresh cracks, perished rubber, and exhaust movement when the engine is revved gently. Brake pipe corrosion was noted in November 2019 and again, more broadly, in November 2018 when all pipes were described as greased, a sign previous owners may have applied cosmetic coatings rather than replacing corroded metal. Inspect every visible brake line, especially along the underside and at rear junctions, for active corrosion or weeping. The rear brake hoses showed slight deterioration in 2018, and rubber components of that age will have aged further regardless of mileage. Suspension wear is another area to examine closely. Front suspension arm pins and bushes were worn across all front bushes in November 2018, and the front anti-roll bar was flagged as corroded but not seriously weakened. With the car now sitting at 125,280 miles and potentially stationary for long stretches, those bushes and joints may have deteriorated further. Listen for clunking over speed bumps and check for uneven tyre wear that would indicate misalignment from worn suspension geometry. The front tyres were worn to the legal limit and on their edges in 2018, a pattern consistent with worn bushes or tracking issues rather than simple neglect. A thorough underside inspection, ideally on a ramp, will reveal whether the recent clean MOT records reflect genuine mechanical care or simply a fresh coat of grease over ageing components.