1995 Mercedes SL 5.0L Petrol · M268 AGL

A consistent theme of corrosion-related advisories across the underside and steering components defines this R129 chassis Mercedes SL, even though it has passed each of its recent tests. The January 2026 examination recorded no defects at all, yet the 2024 and 2025 tests both flagged the nearside front inner track rod end ball joint with slight play, a recurring issue that was present at both the failure in January 2024 and the subsequent pass three days later. Both the 2024 and 2025 advisories also note brake pipe corrosion at the rear and progressive surface corrosion on the rear subframe mounting areas and offside rear suspension spring mounting, all currently classed as not excessive but warranting close monitoring. Minor headlamp lens defects on both front lamps were noted in 2025, and a January 2024 dangerous failure for an excessively worn nearside front tyre, which had been returned to the same test centre and passed only three days later, suggests the tyre issue was rectified promptly but highlights the need for diligent tread inspection. Taken together, the trajectory is one of a chassis developing age-related corrosion while remaining roadworthy, with the steering and braking components most likely to demand attention next. Against an age of 31 years, the recorded 159,597 miles equates to roughly 5,148 miles per year, which is notably low for a vehicle of this vintage and points to either extended periods of light use or significant standing time between MOTs. There are no large gaps in the testing history visible here, but a low annual accumulation typically allows original rubber components such as bushes, gaiters, fuel lines, and brake flexi hoses to degrade through age rather than mileage, and it often coincides with the kind of underbody surface corrosion observed across the recent advisories. The combination of low mileage and a 31-year-old monocoque demands careful inspection for perished rubber and seals as much as for component wear. A prospective buyer should focus the physical inspection on the items the MOT history has repeatedly flagged. The nearside front inner track rod end ball joint has shown slight play for two consecutive years, so on a test drive, listen for any knocking or clonking from the front end over uneven surfaces and feel for vagueness or self-centring instability in the steering. On the lift, the joint should be rocked by hand with the wheel unloaded to confirm the play has not worsened beyond the previously recorded tolerance. The rear brake pipe corrosion advisories, along with the general underbody rust noted in 2023, indicate the metal brake lines along the underside will need thorough visual scrutiny, ideally checking for pitting, flaking, and any weeping joints. Given the vehicle's age, the front and centre brake pipes and the flexible hoses should also be examined, as corrosion tends to affect the whole system. The recurring advisories on the rear subframe mounting prescribed areas and the offside rear suspension spring mounting mean the jacking points, spring seats, and surrounding metalwork warrant close inspection for any progression in rust depth, particularly around structural load-bearing surfaces. Lift the rear carpet and inspect the boot floor and battery tray for moisture ingress, a common R129 issue that accelerates underbody corrosion from above. During the road test, pay attention to any rear suspension clonks or a harsh, unsettled ride over bumps, which could indicate worn spring or shock absorbers concealed by the cosmetic condition. Finally, confirm the recent tyre replacement quality and inspect all four tyres for even shoulder wear, as the edge wear flagged on both fronts in 2023 can be symptomatic of worn suspension bushes or alignment geometry altered by ageing subframe mountings.