2003 Mercedes-Benz CLK 1.8L Petrol · HN53 ATZ

The vehicle presents a worsening maintenance trend characterized by recurring mechanical and structural issues. While the most recent test on 18 October 2025 at 129,703 miles resulted in a pass, the vehicle failed just eight days prior at 129,601 miles due to excessive exhaust emissions and incorrect headlamp aim. The presence of multiple advisories in the latest record, specifically regarding sub-frame corrosion and brake pipe degradation, indicates that while the car is currently legal, the underlying condition of its chassis and braking system is deteriorating. The mileage pattern shows a relatively low annual average of approximately 5,600 miles, which is consistent with a vehicle of this age. Between the 2024 test at 125,704 miles and the 2025 tests, the vehicle covered roughly 4,000 miles. This low usage pattern often correlates with the type of corrosion seen here, as vehicles that sit for extended periods are more susceptible to surface rust and seized components. The data shows a consistent annual testing cycle, providing a clear window into the vehicle's declining condition over the last several years. A prospective buyer must prioritise a thorough inspection of the structural integrity and braking system. The tester flagged rear sub-frame corrosion in both October 2025 and October 2023, and the offside brake pipe has been noted as corroded and covered in grease since October 2023. This suggests a pattern of attempting to mask or manage corrosion rather than resolving it. The recurring issues with suspension components, including track rod ends and various bushes, further suggest that the front-end geometry and stability require close scrutiny. The recent failure regarding exhaust emissions in October 2025 also warrants investigation into the engine's combustion efficiency and the condition of the catalytic converter. Given the history of worn tyres and suspension play, the buyer should check the overall condition of all consumables and the integrity of the chassis. The combination of structural corrosion and emissions issues suggests that while the car has been driven sparingly, it has not been subject to rigorous preventative maintenance.