2006 Audi S4 4.2L Petrol · HA02 ANA

The most recent DVSA examination on 22 May 2026 resulted in a clean pass with no advisories or defects recorded, and the 2025 test was similarly clear, indicating that the vehicle has settled into a stable mechanical state after earlier issues were addressed. The 2022 and 2021 tests also passed without comment, which suggests a generally well-maintained pattern over the last several years. However, the earlier 2019 entry is worth noting as it contains a major failure related to the supplementary restraint system warning lamp, indicating an airbag or SRS control fault that was rectified to allow the subsequent pass. While the recent trend is reassuringly clean, a prospective buyer should verify documentary evidence that the airbag system repair was carried out by a competent specialist, as intermittent SRS faults can recur and are safety-critical. The recorded mileage of 106,109 miles over approximately twenty years equates to an average annual usage of around 5,305 miles, which is notably low for a vehicle of this age. Such modest accumulation typically implies either light regular use or extended periods of standing, and both scenarios carry distinct mechanical implications. Low mileage reduces wear on major drivetrain components but can accelerate degradation of perishable items such as rubber seals, brake system internals, and fluids that deteriorate with calendar age rather than use. It is also worth confirming there are no significant unexplained gaps in the recorded mileages between tests, as inconsistencies could suggest clock irregularities or periods without proper servicing. Given the low-mileage profile and the vehicle's age, several physical checks are advisable before purchase. The tyres should be inspected closely for sidewall perishing and cracking, as rubber compounds harden and degrade over time regardless of tread depth, and an MOT only assesses tread and general condition rather than fine age-related deterioration. The braking system, particularly the front discs and pads which were flagged with advisories in 2019 for pitting, scoring, and thinning pads, warrants careful examination for binding calipers, uneven disc corrosion, and seized slider mechanisms that commonly develop when a vehicle is used infrequently. The undertray and front lip spoiler noted as loose or missing in 2018 should be checked for secure fitting, as unsecured panels can mask underlying components or indicate broader neglect of fastening integrity. Other age-sensitive items demand particular attention on this Audi. The 12V battery is highly likely to be due for replacement if it has not been changed recently, as units of this age typically suffer reduced capacity and cranking performance, especially after periods of standing. All fluid systems, including engine oil, coolant, brake fluid, and the quattro drivetrain fluids, should be checked for age-related degradation and service history stamps, as brake fluid in particular is hygroscopic and should be renewed on a calendar basis regardless of mileage. The earlier advisories for oil leaks, though not deemed excessive, suggest the engine may have weeping seals or gaskets that could develop into more significant leaks; a thorough under-bonnet inspection for fresh residue on the sump, cam chain covers, and turbo oil lines would be prudent. Finally, a careful test drive should be conducted to identify any suspension clonks over uneven surfaces, brake shudder under light pedal pressure, or irregular pulling that could indicate corroded brake discs or worn suspension bushes accelerated by low usage.