2015 Mercedes-Benz C 2.1L Diesel · PR11 WAT

A pattern of recurring advisories on the front suspension is the defining mechanical theme across this 2015 Mercedes-Benz C-Class MOT record. The 2026 test on 8 May recorded slight play at both the offside and nearside front suspension arm ball joints on the rear arm, mirroring identical advisories from the 2025 test a year earlier for both front ball joints. Two prior tests in 2024 and 2023 returned no advisories at all, which suggests the wear has developed relatively recently and is now established on both sides. Earlier entries from 2022 also noted under trays restricting inspection access, a recurring note from 2023 as well, meaning the full underside of the front suspension cannot be visually confirmed at test time. With eight consecutive passes and no failures, the car remains technically roadworthy, but the trajectory at the front suspension is the mechanical item to monitor most closely. Against an 11-year platform age, the recorded 63,549 miles equates to roughly 5,777 miles per year, which sits at the lower end of typical accumulation for this class of vehicle. The MOT history covers every year consecutively from 2020 onward with no extended off-road gaps, indicating continuous use rather than long periods of standing. Low annual mileage does reduce wear on high-cycle items such as the clutch, dual-mass flywheel, and engine internals, but it does not insulate rubber and polyurethane components from age-related degradation. The front suspension arm ball joint play now visible on both sides is consistent with the hardening and shrinkage that affects these bushes and joints over a long service life regardless of mileage, which is why a relatively low-mileage car of this age should still be physically inspected underneath. For a prospective buyer, the priority on any inspection is a hands-on check of the front suspension. With the car raised, the offside and nearside rear control arms and their ball joints should be physically levered with a pry bar to confirm whether the slight play recorded by the tester is still minor or has progressed to the point of needing replacement. On the road, listen for clonks or knocking from the front wheels over speed humps, cats eyes, and uneven tarmac, and feel for vagueness or a slight knocking through the steering wheel on rough surfaces. Uneven front tyre wear, particularly on the outer edges, would also be consistent with deteriorating suspension geometry, and the 2022 test recorded exactly this pattern on the offside front 225/40/18 and offside rear 255/35/18 tyres, so a close check of current tread depth and wear pattern across all four corners is worthwhile. Because the under trays were repeatedly flagged as restricting inspection, budget for their removal during a pre-purchase inspection to allow a full visual check of the subframe, anti-roll bar drop links, and brake pipes for any developing corrosion. The braking system has not featured in any advisory or failure throughout the recorded history, but the calipers, discs, and flexible brake hoses are now over a decade old and should be examined for seized slide pins, lipped or corroded disc edges, and any signs of perished rubber hoses. On a test drive, the pedal should feel firm and progressive without excessive travel, and the car should pull up in a straight line without judder through the steering on moderate braking. Given the under trays obscure much of the underside, a ramp or lift inspection at an independent specialist is strongly advisable before purchase, both to verify the true condition of the flagged front suspension components and to confirm the structural integrity of the subframe and rear axle, areas that the MOT history does not directly address but which are relevant on a Mercedes of this age.