2018 Maserati Quattroporte 3.0L Diesel · H15 STU

A recurring advisory on the off‑side rear tyre – noted as slightly damaged, cracking or perishing in the 2022, 2023 and 2024 MOTs – dominates the mechanical narrative of this Quattroporte. The pattern shows the same issue persisting for three successive years, yet the most recent test on 22 October 2026 recorded a clean pass with no defects, suggesting that the tyre condition either improved or was replaced after the last advisory. The absence of any other failures or advisories across six recorded tests points to an otherwise stable road‑worthiness record. With only 18,918 miles logged over eight years, the average annual accumulation is roughly 2,365 miles, well below the typical usage for a performance saloon of this age. The MOT history is uninterrupted, indicating the vehicle has been kept on the road and inspected each year, but the low mileage could imply periods of limited use or extended storage. Light use reduces cumulative wear on engine, transmission and suspension components, yet it can also allow moisture‑related corrosion to develop on brake discs, calipers and wheel bearings if the car sits for long stretches. Prospective buyers should give the off‑side rear tyre the highest priority. Inspect the tread depth and sidewall for any visible cracks, bulges or dry rot, and feel for irregular wear that might signal mis‑alignment or worn suspension bushes. Verify that the tyre size matches the manufacturer’s specification and that the wheel rim is free of dents or corrosion. A thorough visual and tactile check of the tyre pressure monitoring sensor (if fitted) is also advisable, as a failing sensor can mask pressure loss that accelerates sidewall damage. Because the vehicle has seen relatively little mileage, it is prudent to assess the braking system for signs of surface rust on the discs and any uneven pad wear that could have arisen from infrequent heating cycles. Listen for any judder or pulsation when applying the brakes, and check that the pedal feel is firm and consistent. Examine the front and rear suspension for play in the ball joints, worn bushings or cracked coil‑spring mounts, especially on the off‑side where the tyre advisory originated; any knocking over bumps or a noticeable pull to one side under braking may indicate underlying wear that has not yet triggered an MOT failure.