2014 Ford S-MAX 2.0L Diesel · AF14 JKX

A clear and accelerating corrosion pattern dominates the mechanical history of this 2014 Ford S-Max, with body integrity, underbody hardware, and braking components all showing progressive deterioration across successive tests. The most recent examination on 17 March 2026 recorded a pass, but it was accompanied by an advisory for corroded rear integral body structure, and the same date saw a prior failed attempt owing to misaligned windscreen washer jets. Looking back to the July 2025 test, advisories were raised for a corroding exhaust system, front subframe corrosion, a nearside brake pipe showing corrosion covered in grease or other material running front to rear, and a pitted nearside front brake disc. By the July 2024 pass, corrosion advisories had spread to the rear suspension, both front inner brake discs were scored, the offside rear pads were thinning, and an offside rear inner tyre was showing wear and damage on its inner edge. The trajectory is unambiguously worsening, with corrosion migrating from localised exhaust surface rust into structural and safety-critical areas including the subframe, brake pipework, and body shell. With 71,611 miles accumulated over roughly twelve years, the vehicle averages around 5,968 miles annually, which is low for its age and suggests either predominantly short urban journeys or extended periods of limited use. While lower mileage generally preserves the engine, gearbox, and major drivetrain components, it places greater stress on ancillaries that suffer from underuse. Brake discs and pads suffer from prolonged surface corrosion, suspension bushes and ball joints dry out and crack from lack of regular articulation, and brake fluid degrades through lack of periodic flushing. The recorded mileage gaps between tests, combined with corrosion spreading across both the body structure and undercarriage, point towards a vehicle that may have spent considerable time stationary outdoors, allowing moisture to attack ferrous components throughout. For a prospective buyer, the brake pipe corrosion advisory is the most pressing concern, as the DVSA inspector specifically noted degradation front to rear on the nearside line. On inspection, the full length of all brake pipes should be examined for blistering, flaking, or rust pitting, particularly along the underside and where the lines pass through the subframe or body mounting points. The front subframe corrosion advisory warrants a careful visual check from beneath the vehicle, ideally on a ramp, looking for any loss of metal thickness around mounting points, mounting brackets, or where suspension arms attach. The scored front inner brake discs should be checked for a definite lip on the outer edge, any judder or vibration through the steering wheel under firm braking, and pulsing through the brake pedal, all of which would indicate the discs have worn beyond safe limits and require replacement rather than machining. The rear integral body structure corrosion and the central rear suspension component corrosion should also be physically inspected, as these areas commonly suffer from water ingress and salt accumulation around the rear axle, spare wheel well, and suspension mounting points. A test drive should focus on detecting clonks, knocks, or excessive vertical movement from the rear suspension over uneven surfaces, as corroded bushes and weakened components often produce audible symptoms before they become visibly critical. The thinning offside rear brake pad advisory suggests the braking system has been used relatively little, so the offside rear caliper should be checked for seized slider mechanisms by confirming the pad moves freely within its bracket. Finally, the misaligned washer jets that caused the recent failure are a trivial rectification, but the washer fluid reservoir, pump operation, and the condition of the wiper blades should be confirmed as fully functional, while the deteriorating front registration plate should be replaced to avoid future advisory recurrence.