2005 Mercedes-Benz CLK 2.6L Petrol · SL04 ACL

The vehicle's most recent DVSA examination was conducted on 6 August 2026, where it was issued an MOT pass alongside several advisories relating to tyre condition, rear spring corrosion, general surface corrosion, and front brake pad corrosion. However, a failure recorded on the same date highlighted two major defects that required rectification before the pass certificate could be issued: a nearside rear tyre with a cut deep enough to expose the ply or cords, and an offside front headlamp whose beam aim projection was obviously incorrect. Examining the broader trend across the three most recent test cycles, the maintenance pattern appears to be one of slow but steady deterioration rather than acute decline. The 2024 advisory concerning offside rear brake disc wear was followed in 2025 by front anti-roll bar linkage play and dust cover failure alongside minor battery insecurity, and in 2026 by tyre edge wear, suspension spring corrosion, and broader corrosion advisories. This trajectory is consistent with a vehicle entering the later stages of its economic life, where corrosion-related advisories accumulate gradually each year. With 117,086 miles recorded across approximately 21 years, this Mercedes CLK has averaged around 5,576 miles annually, which is notably low for a car of this vintage and considerably below the typical 7,000 to 10,000 miles per year associated with average private use. Such low annual mileage suggests the vehicle has either been used sparingly as a second car or has experienced prolonged periods of standing between journeys. While low mileage reduces wear on internal combustion components, clutches, and drivetrain parts, it typically accelerates deterioration of items affected by inactivity, including brake disc surface corrosion, brake caliper seizure from seized pistons or guide pins, tyre sidewall perishing from age rather than wear, and 12V battery sulphation from irregular charging cycles. The recorded mileage progression between tests should be reviewed carefully to confirm consistent, modest accumulation and to verify whether significant periods of dormancy have occurred. Several recurring advisories warrant close attention during a pre-purchase inspection. The rear suspension spring corrosion noted in 2026, combined with the front anti-roll bar linkage play and perished dust cover flagged in 2025, indicates that the suspension and anti-roll bar assembly are now in a phase where replacement of bushes, drop links, and potentially the coil springs themselves should be anticipated. On a test drive, listen for clonking or rattling noises from the front suspension over speed bumps and uneven road surfaces, and pay particular attention to vague or wandering steering response that may suggest worn anti-roll bar components. The brake-related advisories, including the corroded front pads and the previously scored offside rear brake disc, suggest the braking system has likely suffered from standing corrosion; during inspection, verify that the calipers are not binding, check for uneven pad wear across each axle, and confirm the discs retain sufficient material without excessive lip or pitting. Given the age of the vehicle, irrespective of the MOT record, the brake fluid, coolant, and automatic transmission fluid (if applicable) will be well beyond their manufacturer service intervals and should be tested or replaced as part of any purchase negotiation. Beyond the recorded defects, the advisories relating to general surface corrosion across various underbody and chassis components, combined with the noted exhaust system corrosion from 2025, point to widespread age-related oxidation that will continue to progress. A thorough underside inspection on a ramp is strongly recommended, with particular attention to structural integrity around jacking points, suspension mounting locations, and the exhaust system itself, as corroded mounting brackets and hangers can lead to exhaust detachment. The nearside rear tyre edge wear advisory, alongside the offside front tyre cracking noted in 2026, suggests that attention should be given to wheel alignment geometry and the condition of all four tyres including sidewall integrity, as 21-year-old tyres are highly susceptible to perishing even where tread depth remains adequate. Finally, given the low annual mileage and likely periods of standing, the 12V battery should be load-tested to confirm its state of health, and the condition of all door, bonnet, and boot seals should be examined for drying and cracking, which is common on vehicles of this age that have spent extended periods outdoors.