2007 Mercedes-Benz C 1.8L Petrol · MA07 WNP

The most recent MOT, conducted on 27 March 2026, resulted in a failure. The test recorded a dangerous leak from the off‑side rear brake pipe and a major defect where brake performance could not be assessed, indicating a serious deficiency in the hydraulic braking system. Over the preceding six years the MOT record shows a steady accumulation of advisories – persistent corrosion of rear brake pipe and sub‑frame, progressive wear of front and rear suspension arm pins, bushes and ball‑joint dust covers, and a tyre now at the legal minimum tread depth. This pattern points to a worsening trend, particularly in the rear braking circuit and under‑body corrosion, rather than a stable or improving maintenance regime. At 74 495 miles the car averages just under 4 000 miles per year, which is markedly low for a 2007 model. Such light usage often reflects periods of infrequent driving or prolonged storage, conditions that can accelerate corrosion of brake lines, sub‑frame and exhaust components, as well as promote fluid degradation and battery sulphation. The low mileage does not offset the age‑related wear items evident in the MOT history and suggests that many wear‑items may be near the end of their service life despite the modest odometer reading. A prospective buyer should give immediate attention to the rear braking system. Both rear brake pipes exhibit corrosion and, in the latest test, a leak that rendered the system unsafe; replacement of the pipes, inspection of the rear brake hoses for cracking, a complete bleed of the hydraulic circuit and a thorough check of the rear calipers and discs for rust or uneven wear are essential. The off‑side rear tyre is down to 2 mm tread and will need replacement, and the remaining tyres should be examined for sidewall cracking, age (check the DOT code) and uniform wear. The suspension shows consistent advisory notes on front and rear arm pins, bushes and ball‑joint dust covers; any audible clunk, looseness when steering or over bumps, or uneven tyre wear could indicate that these components are close to failure and should be replaced or at least inspected by a competent technician. Given the vehicle’s age and low utilisation, additional time‑based checks are prudent. Verify the condition of the 12 V battery, looking for reduced cranking power or swelling; assess the state of all engine and transmission fluids, as they may have deteriorated despite low mileage. Inspect the under‑body for any progression of the noted rear sub‑frame corrosion, especially around mounting points, and ensure that any plastic protective covers are intact. Finally, confirm that a full service history exists, with recent oil, filter and coolant changes, and that any previous corrosion‑related repairs have been documented, to give confidence that the car has been maintained in line with its age and usage profile.