2001 Alfa Romeo 166 V6 Super 3.0L Petrol · J9 DDW

A quarter-century-old Alfa Romeo 166 with five MOT tests recorded since 2021 and two failures within that window, both with no defects recorded against them, presents an ambiguous picture rather than a clean roadworthiness narrative. The most recent outcome on 30 January 2026 was a pass with no advisories, and the January 2025 test also passed cleanly, which suggests the car has been brought to a presentable standard ahead of each annual assessment. However, the two consecutive failures in late 2023 and early 2025, separated by exactly 16 months with no test in between, indicate that the vehicle has at times been presented for test in an unroadworthy condition and then rectified off-site. The pattern is intermittent rather than chronic, but a prospective buyer should not interpret the latest pass as confirmation of lasting mechanical integrity; the underlying reasons for the two failures remain undocumented in the record. Recorded mileage of 12,178 miles across approximately 25 years equates to an annual accumulation of around 487 miles, which is exceptionally low and consistent with long periods of inactivity interspersed with occasional use. The MOT record reflects this rhythm: tests occur in clusters (late 2021, late 2022, late 2023, early 2025, early 2026) rather than on a strict yearly cycle, suggesting the vehicle has been taken out of VED or SORN periods and brought back into use sporadically. Mechanically, this usage profile is significant for a vehicle of this vintage. Standing for extended periods allows brake discs to corrode on the surface, brake calipers to bind or seize, suspension bushes and ball joints to deteriorate from lack of articulation, rubber brake lines to perish internally, and seals throughout the drivetrain to dry out. The very low mileage also means each annual MOT sample is small and may not expose weaknesses that develop under sustained load. The advisory trail points to specific components that warrant close physical inspection. The nearside rear anti-roll bar linkage ball joint has shown slight play at both 2021 and 2022 tests, indicating persistent wear at that joint, and the offside front lower suspension arm ball joint was also flagged in 2022. On a test drive, listen for clonks or knocks from the rear under load, particularly over speed humps and uneven road surfaces, and feel for imprecise steering response or wandering at speed which would suggest the front joint has progressed beyond slight play. The nearside front brake pipe was recorded as corroded but covered in grease or other material in 2022; although not flagged since, protective grease masking corrosion is a temporary measure, and the pipe should be physically inspected for rust pitting, particularly at unions and along the chassis run. The 2022 major failure for a rear exhaust gas leak means the rear exhaust section has been replaced at least once, and on inspection check for blue soot around joints indicating incomplete sealing. The 2021 advisories for a worn steering column top bearing and an oil leak (noted as not excessive) should also be verified: rotate the steering lock to lock with the vehicle stationary to feel for notchiness or roughness from the column, and inspect the underside for fresh oil accumulation, particularly around the sump, cam covers, and any engine-to-gestany seals. Given the test gaps and intermittent usage, a buyer should also commission a compression test or at minimum an oil analysis to confirm internal engine condition, as low-mileage engines that have stood for long periods can suffer from bore glazing, dried valve stem seals, and stale lubricant that has lost its protective qualities. Inspect the brake calipers for free movement of pistons and check the handbrake travel, as calipers that have seized from disuse are common on lightly used classics. Tyres older than five years from their DOT stamp should be replaced regardless of tread depth, as the rubber compound hardens and cracks with age on a vehicle that sees so little road use. Finally, verify that the timing belt and service items have been changed on calendar age rather than mileage alone, as most Alfa Romeo V6 24v engines of this era require belt replacement every three to five years irrespective of mileage covered.