2012 Mercedes-Benz C 1.8L Petrol · LS12 GFU

The most recent DVSA examination on 18 December 2025 returned a pass with no defects recorded, suggesting the immediate roadworthiness standing of the vehicle is currently satisfactory. However, the broader history reveals a mixed picture rather than a stable upward trend. The same date in 2025 was preceded by a failed test just one day earlier citing an insecure headlamp, a non-functioning horn, an airbag or supplementary restraint system warning lamp fault, and a dangerous rear tyre tread depth below the legal 1.6mm minimum. Earlier in 2024 the nearside rear tyre was already noted as worn close to the legal limit at 3mm, indicating that the rapid rear tyre wear is a recurring pattern rather than an isolated event. Two further failed tests in 2022 highlighted significantly corroded rear brake discs, excessively corroded brake pipes, and a dangerous structurally compromised rear tyre, alongside an advisory noting reducing rear brake efficiency on the rollers. Taken together, the pattern points to a vehicle that has experienced repeated issues with rear tyres, rear braking components, and corrosion-related deterioration, suggesting that the maintenance regime may be reactive rather than preventative. With 94,962 miles recorded over approximately 14 years, this C-Class is averaging roughly 6,783 miles annually, which sits broadly in line with typical UK usage for a car of this age. The mileage accumulation appears reasonably steady, with no large annual jumps that would indicate an exceptionally high-mileage working life such as a taxi or motorway commuter role. That said, the recorded odometer readings should be cross-referenced against the service book and any digital service records to confirm continuity, as mileage discrepancies are not uncommon on prestige vehicles of this era. The moderate annual mileage also means consumable wear is likely progressing at a predictable rate, and the buyer should expect that suspension components, bushes, and braking parts will be approaching or past mid-life replacement thresholds. The recurring rear brake and tyre issues warrant close physical inspection before purchase. The rear brake discs were flagged as completely corroded at the 2022 test, and the brake pipes were described as excessively corroded into the flexi hose, with all other pipes covered in grease which can mask corrosion. A thorough inspection beneath the vehicle is therefore essential, ideally on a ramp, to check the condition of all flexible and rigid brake lines, the rear calipers for binding or seized pistons, and the rear brake discs for lipping, surface corrosion, or uneven wear. On a test drive, listen for any rear brake shudder, grinding, or pulling to one side under firm braking, and observe whether the handbrake holds effectively on an incline, as rear caliper handbrake mechanisms on Mercedes of this era are known to seize when the vehicle is used infrequently. The tyre wear pattern also needs careful evaluation. The nearside rear tyre was previously worn on the edge, which often points to rear wheel alignment issues, worn rear suspension bushes, or weak coil springs causing the camber to shift under load. A four-wheel alignment check is advisable, and the buyer should inspect the sidewalls of all four tyres for cracking or perishing given the age of the rubber, regardless of the tread depth. Beyond the documented defects, a fourteen-year-old Mercedes with this mileage profile will be subject to age-related degradation that does not necessarily show in MOT records. Coolant, brake fluid, and transmission fluid all degrade over time rather than purely by mileage, so verify when these were last replaced and whether the service book shows consistent main dealer or specialist stampers, as neglected servicing on a C-Class can lead to premature timing chain stretch, oil consumption, and balance shaft wear on the petrol units. The supplementary restraint system warning lamp that appeared at the 2025 failed test should be diagnosed and cleared, as it may indicate a faulty seatbelt pretensioner, airbag clock spring, or crash sensor, all of which are common failure points on vehicles of this vintage. Check the 12V battery health, as a failing battery can trigger spurious warning lamps including the SRS light, and inspect the undertrays and engine covers for signs of fluid leaks, particularly from the oil filter housing and coolant pump which are known weak points. Finally, examine the bodywork carefully for corrosion around the wheel arches, sills, and boot lid, as Mercedes of this era can suffer from sub-surface corrosion that develops independently of the mechanical service history.