2017 Land Rover Discovery 3.0L Diesel · OY17 TBU

A developing concern is the deterioration of the front lower rear suspension arm ball‑joint dust covers on both the nearside and offside, flagged as advisories in the February 2026 MOT. While the test was passed, the presence of worn dust covers suggests that the underlying ball‑joint bearings may soon be exposed to contaminants, a condition that can accelerate wear and potentially lead to suspension looseness if not addressed. Earlier MOTs show a separate issue with the rear braking system – thin rear pads and lipped, uneven rear discs were noted in April 2023 – but no further failures have been recorded since, indicating that the brakes have either been serviced or the wear has stabilised. At 75,687 miles recorded over roughly nine years, the vehicle averages about 8,400 miles per annum, a mileage rate that sits comfortably within normal usage patterns for a Discovery of this age. The MOT history shows annual testing with no significant gaps, confirming that the mileage progression has been steady rather than subject to long periods of inactivity or sudden high‑kilometre surges, which can stress drivetrain and suspension components. For the suspension dust‑cover issue, a prospective buyer should inspect the front lower rear arms for any play in the ball joints when the wheel is rocked vertically and laterally, listen for clunking noises over bumps, and feel for uneven tyre wear that might indicate misalignment. Visual examination of the dust covers for cracks, corrosion or missing pieces is essential, and any signs of moisture ingress warrant replacement of the dust cover and a thorough check of the ball‑joint condition. Given the Discovery’s off‑road pedigree, also verify that the surrounding chassis and subframe are free of rust that could compromise mounting points. Regarding the rear braking advisories, the buyer should measure pad thickness (new pads are typically 10‑12 mm) and inspect the discs for scoring, warping or excessive rim‑run that could cause pulsation through the pedal. During a test drive, pay attention to any squealing, grinding or a soft pedal feel when applying the rear brakes, and watch for a pull to one side that might indicate uneven disc wear. If the pads are approaching the minimum legal limit (1.6 mm) or the discs show pronounced lipping, budgeting for a pad and disc replacement would be prudent to maintain safe stopping performance.