2015 Mercedes-Benz CLS220 Amgline Prem+ Bluetec A 2.1L Diesel · RP51 KBP

The most recent DVSA MOT test, conducted on 28 March 2026, resulted in a Pass with no defects or advisories recorded, which is the strongest possible outcome and indicates that the vehicle met all statutory roadworthiness requirements on the day of inspection. The intermediate entry of 19 January 2026 is a Fail, although it carries no recorded defects within the data set provided, suggesting the failure may have related to administrative or presentation issues that were subsequently rectified, given the clean Pass less than three months later. Reviewing the broader pattern across the 2022 to 2026 tests, all entries show Passes with no advisories apart from that single interim failure, which points to a generally stable and well-maintained vehicle. The absence of recurring or persistent advisory items relating to suspension components, brake wear, corrosion, or exhaust emissions suggests that the owner has addressed servicing and component replacement proactively rather than allowing minor defects to accumulate test-on-test. With 69,898 miles recorded over approximately eleven years, this CLS-Class has covered an average of around 6,354 miles per annum, which is broadly typical for a premium diesel saloon of this vintage and falls comfortably within expected parameters for a vehicle of its type and age. There are no significant gaps in the recorded MOT history that would suggest long periods off-road, nor are there any indications of unusually rapid mileage accumulation between tests, both of which can be telling indicators of mechanical condition. A steady, moderate annual mileage such as this generally implies proportionate wear on major drivetrain consumables, and the diesel powertrain will not have been subjected to excessive short-trip duty that often accelerates DPF, turbo, and EGR issues. Conversely, because the mileage is not unusually high, it is reasonable to expect that original or long-standing components such as the timing chain, dual-mass flywheel, and suspension subframes have not been stressed by extreme use, though age-related degradation remains a consideration independent of distance covered. Given the largely clean MOT record but the age and standing-time risk implicit in any diesel luxury saloon, a prospective buyer should carry out a focused physical inspection prior to purchase. Begin with the tyres: even if they show legal tread depth, an eleven-year-old vehicle may still be running rubber of considerable calendar age, and sidewalls should be checked carefully for perishing, cracking, or UV degradation, particularly on the inner shoulder which is difficult to see. Inspect all four brake discs for lipping, surface corrosion, and any evidence of binding calipers, as vehicles used for predominantly gentle urban driving frequently develop corroded or seized caliper pistons that present as pulling under braking or uneven pad wear. The 12V battery should be load-tested, as Mercedes-Benz vehicles of this era are highly sensitive to battery state-of-health and a failing cell can produce a cascade of electrical warnings and module communication faults even when the engine starts normally. Under the bonnet, inspect for any evidence of fluid leaks from the oil filter housing, injector return lines, and the commonly troublesome diesel AdBlue system, as well as checking the coolant level and condition for signs of recent top-up or emulsification. The diesel particulate filter should be verified as functional, ideally by confirming recent regeneration cycles have completed without stored fault codes, and a diagnostic scan with a Mercedes-compatible tool is strongly advised to reveal any latent issues not visible on the MOT record. On the test drive, listen for suspension clonks over speed humps and uneven surfaces, which would indicate worn front lower control arm bushes, anti-roll bar drop links, or coil spring fractures, all known concerns on the CLS chassis. Pay particular attention to the seven-speed automatic gearbox, ensuring shifts are smooth and torque-converter lock-up is unobtrusive, and verify that the air suspension, if fitted, settles evenly and does not drop overnight. Finally, confirm that the digital service history is present and stamped within the correct intervals, and request evidence of recent replacement of the brake fluid, coolant, and transmission fluid in line with Mercedes-Benz time-based servicing schedules rather than purely mileage-driven intervals.