2005 Lexus IS250 2.5L Petrol · FH55 LEX

A pattern of late-stage corrosion advisories is the defining mechanical theme in this Lexus IS250's MOT record, with the most recent test on 26 January 2026 passing but flagging brake pipe corrosion front to rear and on both front pipes, all coated in grease or similar material, alongside a general underbody corrosion advisory. Prior to that the record was unusually clean, with eight consecutive passes between 2018 and 2025 and only tyre wear advisories on both fronts and the offside rear noted in January 2024. The sudden appearance of three corrosion-related advisories in a single test after years of defect-free outcomes points to age-related deterioration of the underbody and brake line protection rather than any sudden mechanical failure, and any buyer should treat this as the start of a likely escalating rust pattern on a 21-year-old vehicle. Mileage accumulation across the recorded tests is broadly consistent with the vehicle's age, with the odometer reading 164,848 miles across roughly 21 years, equating to around 7,850 miles annually. The test interval between January 2019 and January 2021 shows a two-year gap with no recorded test, and during that period the mileage rose from approximately 113,000 to 130,000, suggesting the car was in regular use but possibly untested for one cycle. The subsequent annual tests show steady progression through to the current reading, indicating consistent rather than sporadic use. For a car of this age and mileage, the mechanical expectation is elevated wear on consumables such as brake discs and pads, suspension bushes, engine and gearbox mountings, and drive belt components, even where the MOT record itself does not formally flag them. Given the brake pipe corrosion advisories, the priority on inspection is the undervehicle brake line condition. Corrosion under a layer of grease can mask advanced pitting, and a buyer should arrange for the vehicle to be raised on a ramp to physically examine the full length of the front-to-rear pipe, the four lateral sections feeding each wheel, and any unions or clips along the chassis rails and subframe. Surface rust on the underbody as flagged generally should be checked for structural relevance, particularly on the suspension mounting points, front subframe, rear beam mountings, and around the wheel arches. Any bubbling under paint, flaking that reveals deep scaling, or corrosion that allows a fingernail or coin to depress the metal warrants further investigation by a specialist, as brake pipe replacement on a corroded undercarriage can quickly become uneconomical if multiple sections are affected. On a road test, attention should focus on the brake pedal feel and response, as compromised pipe integrity can manifest as a soft or spongy pedal, excessive travel, or any visible fluid seepage at the wheels after a few firm stops. Steering and suspension inputs should be exercised over uneven surfaces, listening for clonks or knocks from the front strut top mounts, lower control arm bushes, or anti-roll bar drop links, and feeling for vagueness or looseness through the rack. The tyres flagged for edge wear in 2024 should be inspected for uneven shoulder wear, which can indicate incorrect alignment, worn suspension bushes, or tired dampers. Finally, because this is a 2.5-litre V6 petrol with high mileage, the engine should be observed from cold for smoke, listened for timing chain rattle on initial start-up, and checked for any oil seepage around the valve cover gasket and sump, none of which formed part of the MOT record but are common wear points on a vehicle of this age and accumulated distance.