2018 Mercedes-Benz C 1.9L Diesel · LM68 AAX

The most recent MOT test on 2025-10-13 resulted in a clean pass, but the vehicle’s roadworthiness record reveals a pattern of persistent, wear-related advisories rather than outright failures. While the test itself did not flag any critical defects, the recurring advisories—particularly concerning tyre wear and brake pipe corrosion—suggest a maintenance trend that has not fully resolved over the past three years. The front and rear tyres have been flagged as worn close to or beyond legal limits, with inner edges showing significant perishing, indicating either aggressive driving habits, excessive cornering forces, or prolonged periods of low-speed use that accelerates tyre degradation. The brake pipe corrosion advisories from 2024 also persist, hinting at either poor maintenance practices or environmental exposure that accelerates rust formation, which could compromise hydraulic integrity if left unaddressed. The vehicle’s recorded mileage of 55,944 miles over approximately eight years represents a moderate annual usage rate of around 7,000 miles per annum, which is typical for a car of this age and class. Such a mileage profile does not inherently indicate excessive wear, but it does mean that consumables like tyres, brake pads, and suspension components have been subjected to consistent use over time. However, the presence of advisories on tyre wear—especially the perishing noted on the front tyres—could be exacerbated by lower mileage if the vehicle has been parked for extended periods, leading to uneven tyre pressure or cornering stress. The brake pipe corrosion advisories, meanwhile, may reflect either infrequent fluid changes or exposure to damp conditions, both of which can accelerate rust formation in the hydraulic system. To proceed with a thorough inspection, the prospective buyer should prioritise checking the tyre condition further, as the perishing on the inner edges of the front tyres could indicate underlying issues such as incorrect tyre pressure, improper alignment, or excessive load distribution. During a test drive, listen for uneven tyre wear patterns, which may suggest misalignment or suspension misalignment, and observe for any signs of vibration or pulling to one side. The brake system should be inspected for any signs of binding calipers, excessive brake dust, or uneven brake disc wear, as the corrosion advisories on the brake pipes may suggest hydraulic fluid degradation or moisture ingress, which could lead to reduced braking performance if not addressed. Additionally, verify that the brake fluid level is correct and that there are no leaks around the brake master cylinder or calipers. For fluid servicing, given the vehicle’s age and the advisories present, the brake fluid should be replaced according to the manufacturer’s schedule, typically every two years or 40,000 miles, whichever comes first. The brake fluid in a Mercedes-Benz can absorb moisture over time, leading to corrosion in the brake lines and reduced effectiveness, so this is a critical maintenance task. The tyre advisories also warrant immediate attention, as perished rubber can compromise tyre integrity and safety, particularly if the vehicle is driven at higher speeds. The buyer should also consider checking the vehicle’s standing corrosion, especially around the wheel arches, brake components, and undercarriage, as the corrosion advisories suggest potential areas of concern. Finally, a visual inspection of the suspension for signs of worn bushes, coil springs, or damaged struts would be prudent, as excessive mileage can accelerate wear in these components, leading to clunking noises or reduced ride quality.