2004 SEAT Altea Stylance TDI 1.9L Diesel · AEZ 2275

This 2004 SEAT Altea Stylance TDI presents a notably clean MOT history across the recorded tests, with all three available examinations dating from August 2021 through March 2024 resulting in pass certificates and no advisories or defects recorded against the vehicle. The absence of any flagged items across multiple consecutive tests suggests that the areas typically vulnerable on a vehicle of this age and platform, including front suspension components, brake pipes, underbody corrosion, and exhaust integrity, have either been addressed proactively or have not yet deteriorated to a reportable threshold. However, the relatively short recorded testing window of under three years limits the extent to which long-term degradation trends can be established, and any structural issues developing between tests would remain undocumented. With the recorded mileage stated as unknown, it is not possible to calculate a precise annual accumulation rate against the vehicle's twenty-two year service life, though the consistency of the testing pattern at roughly annual to eighteen-month intervals suggests a car that has remained in active use rather than being laid up for extended periods. A lack of recorded odometer readings in the available test data means that mileage consistency or sudden jumps cannot be verified through the MOT record alone, which is particularly relevant for a diesel Altea of this generation where high-mileage examples commonly exhibit turbo wear, dual-mass flywheel fatigue, and injector leakage. Any prospective buyer should therefore scrutinise the physical dashboard mileage against the service book and V5C documentation to establish whether the vehicle has covered an average, low, or disproportionately high figure relative to its age. Given that the MOT history is free of advisories relating to specific components, a physical inspection should focus on the typical wear points for this chassis, with particular attention to the front MacPherson struts, lower wishbone bushes, and anti-roll bar drop links, which are known to deteriorate on Altea and Golf Mk5-derived platforms of this era and can produce knocking or clonking over uneven surfaces. On a test drive, listen for any clonking from the front suspension over speed humps, vagueness in the steering around the straight-ahead position, or any tendency for the vehicle to wander or pull, as these can indicate worn top mounts or perished bushes that an MOT inspection may not have specifically flagged. The diesel powerplant should be evaluated from cold for excessive smoke, uneven idle, or timing belt cover ticking, and a sustained road test under load should confirm smooth turbo delivery without any hesitation, overboost warning lights, or whistling noises suggestive of a failing turbo actuator. Braking performance should be assessed both at low speed and during a firm higher-speed stop, with particular attention to pedal feel, any pulsation through the brake pedal indicating disc runout, and any pulling to one side which could point to a binding caliper slide pin or a seized handbrake mechanism on the rear drums. A thorough underbody examination with the vehicle raised is essential, even though no corrosion advisories have been recorded, as the Altea is known to suffer from chassis rail and rear axle mounting surface corrosion that can develop between tests. Verify that the dual-mass flywheel operates without an audible rattle on idle and that the clutch takes up smoothly without judder, as replacement of these components on a TDI of this age represents a substantial cost. Finally, confirm that the timing belt and cam belt service intervals have been observed within the manufacturer schedule, as neglect of this critical maintenance item on a 2004 TDI engine would carry catastrophic consequences regardless of the clean MOT history.