2007 Mercedes-Benz C 2.1L Diesel · SP07 DMP

The most recent MOT on 16 February 2026 recorded a pass but also a major failure for front‑brake imbalance of 38 per cent across the axle, which is a safety‑critical defect. Over the last four years the car has moved from clean passes to a series of increasingly serious faults – tyre tread and ply loss in 2025, worn front suspension ball joint in 2023 and deteriorating brake hoses in 2022 – indicating a trend of deteriorating condition rather than improvement. The recurrence of front‑end issues (brake balance, suspension ball joints and anti‑roll bar dust‑cover) suggests that wear on the steering and braking assemblies is accelerating. At 127,591 mi the vehicle averages roughly 6,700 mi per year, a modest utilisation for a 2007 model. The mileage is low enough that the engine and drivetrain are unlikely to have suffered high‑stress wear, but the age of the car means many rubber and polymer components have been in service for well over a decade. Prolonged periods of inactivity, which are common with low‑mileage cars, can lead to tyre perishing, seal hardening and corrosion of hidden parts, so the mileage figure should be viewed in the context of calendar age rather than wear alone. A prospective buyer should concentrate on the front braking system and suspension. Verify that the brake pedal is firm and free from pulsation, and listen for any grinding or squealing that could indicate warped discs or uneven pad wear. Inspect the brake discs for scoring and measure disc thickness; replace pads and discs if the imbalance is not rectified by simple pad replacement. Examine the front lower ball joint on the nearside for excessive play – a worn joint will produce a clunk when turning or over bumps and can affect wheel alignment, leading to the tyre wear already recorded. The upper anti‑roll bar linkage dust cover should be intact; if it is missing or damaged, dirt can infiltrate the bushings and accelerate wear, so replacement is advisable. All four tyres should be examined closely: the nearside front tyre is already below the legal tread limit and the off‑side front tyre shows exposed ply, while the rear tyres exhibit side‑wall cracking. Given the age of the rubber, it is prudent to replace the entire set rather than rely on patch repairs. Beyond the recorded defects, a thorough pre‑purchase check should include a visual inspection for rust on the chassis, wheel arches and suspension mounting points, especially if the car has spent time standing. Test the 12 V battery for cranking voltage and check for any signs of electrolyte leakage or corrosion on terminals. Verify that the coolant, engine oil and brake fluid have been changed within the manufacturer’s time‑based intervals – fluids can degrade even without mileage and cause internal corrosion. Finally, request a full service history and consider a professional mechanical inspection to confirm that any latent issues, such as deteriorated brake hoses or hidden suspension wear, are addressed before purchase.