2012 BMW 520 2.0L Diesel · BL12 WCE

The BMW 520d’s MOT history presents a mixed but ultimately concerning picture of its structural integrity. The most recent test in December 2024 at 179,651 miles passed without defects, yet this follows a critical failure just two months earlier—October 2023—when a fractured offside front coil spring was recorded at 156,317 miles. This is not an isolated incident; the same component class (front suspension) was not flagged in prior tests, suggesting either deferred maintenance or a latent failure mode. While the December 2024 pass implies the coil spring was replaced, the rapid progression of wear in high-mileage suspension components—especially in a vehicle of this age—demands scrutiny. The absence of further advisories or defects since the 2023 failure is encouraging, but the coil spring failure alone raises questions about whether other suspension bushes or ball joints may be approaching their service limits. The mileage accumulation here is aggressive for a 14-year-old vehicle, averaging roughly 12,832 miles per year—a figure more typical of a commercial fleet than private use. The gap between the 2022 and 2023 tests (just two days apart) is unusual and suggests the vehicle was driven to a second test after failing on tyre tread, indicating either a lack of proactive maintenance or a deliberate attempt to pass inspection. The rapid mileage climb from 154,947 miles in October 2022 to 156,317 miles by October 2023 (a 1,370-mile increase in under a year) further implies heavy usage, which would accelerate wear on brakes, drivetrain, and steering components. The most recent 23,332-mile jump between December 2023 and December 2024—despite the coil spring failure—hints at either rushed repairs or a reluctance to address underlying issues promptly. For a prospective buyer, the priority must be a thorough inspection of the front suspension, particularly the coil springs and associated mountings, given the documented fracture. Binding or uneven wear in the steering rack, uneven tyre wear, or clunking noises over bumps would signal deeper issues. The rear brakes were not flagged beyond the 2022 tyre failures, but given the high mileage, brake caliper binding or glazed discs should be checked. Structural corrosion—especially around wheel arches, sills, and exhaust mounts—should be examined closely, as BMWs of this era are prone to surface and crevice rust. The absence of advisories on emissions or exhaust integrity in recent tests is positive, but a visual check for leaks or excessive soot staining is prudent. Finally, the vehicle’s service history should be verified for evidence of suspension or steering work beyond the MOT-recorded coil spring replacement.