1998 Mercedes SL 5.0L Petrol · R145 ABT

Persistent corrosion-related advisories across the braking and exhaust systems define the current mechanical profile of this Mercedes SL, which secured a pass on 19 January 2026 despite ongoing concerns regarding structural and component degradation. While the vehicle has avoided major test failures, the recurring nature of the rust-related warnings suggests that environmental exposure has begun to impact the longevity of peripheral metal components. The recent identification of a partially functioning high-level stop lamp and front brake disc wear indicates that while the car remains roadworthy, the maintenance focus has shifted toward addressing the cumulative effects of age rather than simple preventative servicing. With an average annual accumulation of approximately 2,373 miles over its 28-year lifespan, the vehicle exhibits a classic low-usage profile that necessitates a careful assessment of static-related deterioration. This limited mileage often results in components remaining undisturbed for long periods, which can lead to seized linkages, perished rubber seals, and internal corrosion within fluid-based systems that do not benefit from regular thermal cycling. Prospective buyers should be aware that the low odometer reading does not preclude the need for comprehensive mechanical scrutiny, as the primary risks here are linked to the extended idle time rather than high-speed wear or mechanical fatigue. During your test drive, pay particular attention to the braking performance, as the recent advisories concerning the back plates and disc condition point to potential binding or uneven friction surface contact. Listen for any grinding or scraping noises when applying the brakes firmly, and ensure the pedal feel is consistent without any pulsing or judder, which would indicate warped or corroded discs. Given the history of tyre edge wear recorded in 2022, verify that the vehicle tracks straight on a level road surface; any tendency to pull to one side or uneven steering feedback could signify that the suspension geometry has been compromised or that the bushes have hardened and cracked due to age. The reported suspension rust and the previous advisory regarding the central exhaust skin require a physical inspection of the underside, ideally on a ramp. You should look for signs of flaking or deep-seated oxidation on the chassis members and suspension arms, as these are critical areas for a vehicle of this vintage. While the exhaust advisory was noted in 2025, ensure that the system remains secure and free from blowing at the joints, as the low-mileage nature of the car can cause moisture to collect within the silencers, leading to internal rot that may not be immediately visible from the exterior. Any knocking sounds heard from the underside when traversing uneven road surfaces should be treated as a priority, as they likely indicate that the ageing suspension components are no longer providing sufficient damping or structural support.