2017 Mercedes-Benz A-Class 1.5L Diesel · OU67 OEO

The mechanical profile of this 2017 Mercedes-Benz A-Class centres on a pattern of steering and suspension irregularities that have progressively surfaced across successive MOT tests, with the most recent examination on 3 July 2026 recording a passed result but flagging slight play in the nearside front suspension arm ball joint. This latest advisory continues a trajectory established at the September 2024 test, where play in the nearside front steering rack inner joint was noted on both the pass and fail entries from the same date. That 2024 attempt resulted in a failure driven by dangerously worn tyres at both nearside rear and offside front positions, alongside a major defect for an insufficient windscreen washer supply, while a separate major failure in April 2023 was attributed to a fractured offside rear coil spring. The cumulative effect of these entries is a record that demonstrates recurring front-end wear and at least one instance of catastrophic suspension component failure, suggesting that the steering and suspension assemblies warrant particular scrutiny rather than being dismissed as isolated events. Against an age of nine years, the recorded mileage of 83,496 miles equates to an annual accumulation of approximately 9,277 miles, which sits within typical parameters for a vehicle of this vintage and indicates consistent rather than sporadic use. The testing history shows no significant gaps that would imply extended periods off the road, and the mileage progression between tests aligns broadly with expected annual accumulation, ruling out long stationary lay-ups that can independently degrade braking systems, tyres, and underbody components. However, the combination of average-to-slightly-elevated mileage with the recurring front suspension advisories points to ordinary wear patterns being expressed through components that may have been approaching the limits of their service life, which is a relevant consideration for any prospective buyer evaluating remaining component longevity. Given the documented play in both the nearside front suspension arm ball joint and the nearside front steering rack inner joint, a thorough physical inspection should focus on the front suspension and steering geometry. On a test drive, listen for clonking or knocking noises from the front end when traversing speed bumps, potholes, or uneven road surfaces, as these are characteristic symptoms of worn ball joints and wishbone bushes. The steering should be assessed for any vagueness, looseness, or delayed response around the straight-ahead position, and the wheel should be rocked by hand at standstill to detect any perceptible clunking from the rack inner joints, which would confirm the advisories have progressed beyond slight play. Uneven tyre wear across the front axle, particularly on the nearside, should also be examined carefully, as worn inner or outer edges are a common consequence of deteriorated suspension linkages. The 2023 failure for a fractured offside rear coil spring demands a specific check for any residual sagging at the rear, particularly when the vehicle is loaded with passengers or luggage, and any audible thuds over undulating surfaces could indicate a secondary coil fatigue issue. The dangerous tyre tread failures recorded in 2024, while remedied at the time of test, should prompt verification of all four current tyres for adequate tread depth and any signs of uneven wear that might tie back to the steering and suspension concerns already identified. The major defect for the windscreen washer system is a relatively straightforward functional check, but its presence alongside the dangerous tyre failures on the same test is worth noting as an indicator of cumulative deferred maintenance items. A precautionary inspection of the rear coil springs, front lower wishbones, drop links, and anti-roll bar bushes by a specialist would be advisable prior to purchase, given the documented history of component failures in these areas.