2005 Mercedes CLS 5.4L Petrol · SP55 YWZ

The 2005 Mercedes CLS presents a generally stable mechanical condition, though its most recent MOT test on 2025-07-11 at 123,144 miles reveals emerging wear that requires attention. Passing the test, the tester flagged an offside steering rack gaiter deteriorated to the point of preventing dirt ingress, alongside rear brake discs worn, pitted, or scored. These advisories indicate a lack of recent preventative maintenance on critical components, despite the vehicle passing. With the MOT now approaching its expiry in July 2026, the current roadworthiness relies on the owner addressing these specific defects since the last inspection. The recorded mileage of 123,144 miles equates to a low annual average of roughly 5,864 over the vehicle's 21-year lifespan. This sparse usage suggests long periods of standing, which can cause seals to dry out and brake discs to pit from surface corrosion. The MOT history reveals a notable gap between 2016-05-21 at 109,314 miles and 2023-10-31 at 122,569 miles, covering seven years and 13,260 miles. During this interval, the vehicle likely sat idle for extended periods, contributing to the deterioration of rubber components like the steering gaiter observed in 2025. A prospective buyer must inspect the undercarriage thoroughly, as the repeated mention of an undertray fitted across multiple tests obscures the structural integrity of the floor pan and subframe. Low-mileage vehicles often suffer from seized suspension components and exhaust corrosion due to infrequent use, rather than high-mileage wear. The tester flagged a supplementary restraint system warning lamp fault in October 2023, yet the November 2023 test passed without rectifying the issue, suggesting the fault was masked rather than repaired. Buyers should verify the SRS system's full functionality and check the condition of the coil springs and suspension bushes, which commonly corrode on vehicles left standing. The failure for low tyre tread in 2023 points to skipped basic upkeep, as tyres perish from age long before the tread wears out on such a low-mileage vehicle. The pitted rear brake discs and deteriorated steering gaiter further support a pattern of neglecting routine component replacements. Inspect the braking system for binding calipers and verify the steering rack for excessive play. Do not overlook the exhaust system, as short journeys and standing periods accelerate catalytic converter degradation, risking a future emissions failure.