2015 Mercedes-Benz CLA 2.1L Diesel · MM65 AAN

The defining mechanical story of this CLA is a consistent pattern of front tyre wear, culminating in a particularly concerning failure in March 2025 where the nearside front tyre suffered sidewall separation, the offside front inner road wheel was found fractured, and the offside front tyre was below the legal tread depth. Although the vehicle passed its most recent assessment on 2026-03-30, that test issued advisories on the nearside front, nearside rear, and offside front tyres, all noted as being worn close to the legal limit or worn on edge. This combination of a fractured wheel, a structural tyre bulge, and repeated edge-wear advisories over consecutive tests points toward either persistent geometry misalignment, neglected rotation schedules, or frequent high-load cornering that has been degrading the front axle consumables faster than average. With 121,139 miles accumulated over approximately 11 years, the vehicle averages around 11,000 miles annually, which is consistent with regular mixed-use driving. There are no extended gaps in the testing history that would suggest prolonged periods off the road, indicating that the mechanical components, particularly the braking, suspension, and drivetrain, have been subjected to steady, real-world wear. The mileage trend appears smooth and continuous rather than erratic, which is generally favourable, though this level of annual usage means that typical high-mileage wear items such as suspension bushes, anti-roll bar links, and engine mountings should be assumed to be approaching the later stages of their service life. For a prospective buyer, the front axle geometry should be the primary focus during inspection. The recurring edge-wear advisories on both front tyres across multiple tests strongly suggest the need for a four-wheel alignment check, and on a test drive any pulling to one side under acceleration or braking, uneven steering return, or vibrations through the steering wheel at speed would confirm ongoing alignment concerns. Given the fractured wheel recorded in 2025, the replacement wheel and surrounding components such as the wheel bearings and brake discs should be inspected closely for any play or run-out, and the brake pedal feel should be tested for judder which could indicate warped discs resulting from the impact that fractured the original wheel. The minor oil leak flagged in 2023 should also be monitored, particularly if it originates from the front crank seal, timing cover, or turbo oil feed pipes which are known areas on this generation of Mercedes petrol and diesel engines. During a cold start, listen for any chain rattle from the timing area, and check for fresh oil residue on the lower engine and gearbox joiners. Finally, on a physical inspection, examine the underside of the front subframe, brake pipes, and suspension arms for any surface corrosion, as the combination of UK road conditions and higher annual mileage makes these components vulnerable, and any knocking over bumps or excessive looseness in the front suspension when rocked by hand would indicate worn bushes or drop links that will require attention.