2003 Mercedes-Benz CLK 3.2L Petrol · YC53 FPB

Chronic corrosion and a steady procession of front suspension wear items dominate the mechanical story of this 2003 Mercedes-Benz CLK. Across the recorded tests between 2022 and 2026, advisories and failures cluster around the same handful of components, suggesting a long-running pattern rather than isolated incidents. The most recent test on 15 July 2026 was a pass, but it carried an advisory for an offside rear coil spring showing corrosion. Looking back through the record, an offside front suspension ball joint was recorded with excessive wear as a major failure in April 2024, the nearside front inner anti-roll bar pin or bush was noted as worn in May 2025, and central exhaust joint seepage was flagged in the same 2025 test. Subframe mounting areas at the rear were also recorded as corroded but within limits during 2025. The recurring theme is front-end wear and structural surface corrosion rather than a clean bill of health, and the trend shows these advisories compounding rather than resolving between tests. Recorded mileage stands at 166,035 miles over roughly 23 years, which equates to around 7,200 miles annually, consistent with typical use for the vehicle's age. Tests have been taken annually without any multi-year gaps, indicating the car has remained in regular service rather than being laid up. There are no large unexplained mileage jumps between tests, so the usage profile appears steady, which means wear rates on consumables such as suspension bushes, brake components, and engine and gearbox seals are likely to be in line with expectations for a high-mileage vehicle of this vintage. The advisories for gearbox and rear differential oil seepage in 2022, combined with later engine oil leak advisories, are typical findings on a Mercedes of this age and mileage and should be read as signs of normal long-term sealing degradation rather than acute faults. A prospective buyer should focus the physical inspection on the suspension and underbody, particularly the front anti-roll bar links, lower ball joints, and coil springs, as these are the components that have appeared repeatedly in the MOT record. On a test drive, listen for clonking or knocking from the front end over uneven surfaces, which would suggest worn anti-roll bar pin or bush deterioration progressing beyond the slight play previously noted. Steering should feel precise with no vibration through the wheel; any looseness or shimmy could point to deeper wear in the front suspension assembly. The underbody should be examined on a ramp with attention to the rear subframe mounting areas flagged in 2025, checking for any progression of corrosion, particularly around suspension pick-up points, as well as the condition of the coil spring recorded as corroded in 2026. An assistant should also confirm there is no binding or uneven braking and that the brake pedal feels firm, given the dashboard brake wear warning noted in 2024. Finally, the oil leaks that have been noted at several tests warrant monitoring rather than immediate concern. Slight seepage from the engine, gearbox, and rear differential has been a recurring advisory since at least 2022, and any escalation in drips left on the ground, a stronger smell of burning oil under the bonnet, or a falling level on the dipstick between services would suggest these seals are worsening. The headlamp aim too high failures in 2024 and the broken offside headlamp bracket advisories from 2023 and 2024 indicate prior attention to front-end lighting, so verify that both headlamps are correctly aligned and securely mounted. The supplementary restraint system warning lamp failure in April 2024 is a notable safety-related item, and confirmation that the airbag system has been professionally diagnosed and cleared since that test is advisable. The exhaust joint minor leak flagged in 2025 should also be revisited, listening for any increase in exhaust noise or fumes entering the cabin on the test drive.