2008 Mercedes-Benz C 1.8L Petrol · KU58 KBK

The mechanical story of this 2008 Mercedes C-Class is dominated by front brake deterioration and a fractured front coil spring, with the front braking system flagged in every test recorded across 2023 and 2024. The most recent test on 2025-09-19 resulted in a pass, but it carried advisories for front and rear brake pipes corroded and covered in grease or other material on both nearside and offside, a tell-tale sign that moisture has been present on the underbody and that the metal lines are beginning to deteriorate. The September 2024 test sequence is particularly significant: the vehicle failed on 2024-09-19 with a Major defect for imbalanced front brakes across axle 1 and a Dangerous defect for front brake discs seriously weakened on both sides, before passing the very next day on 2024-09-20 with no defects recorded. This implies the discs were replaced immediately after the dangerous failure, but the underlying issue of how the discs were allowed to reach that state remains relevant. An earlier failure in September 2023 recorded a Major defect for a fractured offside front coil spring, alongside a Major for the nearside front passenger door being unable to be opened from either inside or outside the vehicle, suggesting a separate door latch or mechanism failure. With 90,457 miles recorded across approximately 18 years, annual mileage works out at roughly 5,025 miles per year, which is notably low for a vehicle of this age. Such modest accumulation typically reflects either genuine light use or extended periods of standing, and both interpretations carry mechanical consequences. The annual MOT cadence throughout 2023, 2024, and 2025 shows the vehicle was on the road each year, but the low annual mileage raises the possibility of components seizing or degrading through underuse. Rubber brake hoses, suspension bushes, coil springs, and flexible brake lines are all susceptible to age-related hardening and cracking independent of mileage, and this vehicle's record bears that out, with brake hose ferrule corrosion, brake pipe corrosion, and a coil spring failure all occurring despite low mileages. For a prospective buyer, the front braking system is the clear priority. On a test drive, listen for any grinding, pulsing through the pedal, or pulling to one side under firm braking, which would indicate warped or poorly seated discs, while a spongy pedal or excessive lever travel could point to remaining imbalance across the axle. Inspect the front discs visually for a sharp lip on the outer edge and run a finger across the surface to feel for steps or hot spots. The brake pipe advisories from 2025 indicate the metal lines under the vehicle are coated in grease to mask surface corrosion, so on inspection look underneath for flaking, bubbling, or perforation along the pipe runs, particularly at flexible-to-rigid joins and where pipes pass near suspension components. A vehicle of this age with corroded brake pipes is approaching the threshold where replacement of sections or the full underbody line set becomes likely within the next inspection cycle. Beyond the braking concerns, the fractured coil spring and inoperative door recorded in 2023 warrant specific checks. With the vehicle on level ground, examine the front spring seats and lower suspension arms for cracking or corrosion, and on a test drive listen for any clonking over bumps or speed humps, which would indicate worn top mounts, drop links, or anti-roll bar bushes given the low mileage. Operate the front passenger door multiple times from both inside and outside to confirm the latch mechanism is functioning fully, as a repeat failure here would point to a worn actuator or catch. The accumulation of brake, suspension, and corrosion advisories against a low-mileage backdrop suggests this car should be inspected on a ramp before purchase, with particular focus on subframe mounting points, brake line integrity from end to end, and the general condition of the front hubs and bearings given the heavily worked front brakes.