2004 Porsche 911 3.6L Petrol · EU04 AHA

The most recent MOT, carried out on 4 February 2026, resulted in a clean pass with no recorded defects, mirroring the identical outcome of the preceding five‑year series of tests. This uninterrupted succession of passes indicates a consistently stable maintenance regime, with no evidence of deteriorating components or emerging safety concerns over the last five annual inspections. At 70,689 miles the 2004 Porsche 911 averages roughly 3,200 miles per annum, a figure markedly below the typical usage pattern for a vehicle of its vintage. Such low annual mileage often points to either light, occasional driving or extended periods of storage. While reduced wear on consumables such as brake pads, clutch discs and tyre tread is a benefit, prolonged inactivity can accelerate the ageing of elastomeric parts, corrosion of metal components and the gradual loss of fluid integrity, all of which are time‑dependent rather than mileage‑dependent. Prospective buyers should give particular attention to the condition of the tyre sidewalls and tread, as rubber compounds can perish after a decade regardless of mileage, leading to cracking, bulging or loss of grip. Inspect the wheels for any signs of corrosion on the rims and check that the tyre pressures hold steady when the car is warmed up. The 12‑volt battery, likely to be over twenty years old, should be load‑tested; a weakened cell can cause starting difficulties and may have been stressed by intermittent charging cycles. Examine the engine bay for any dried or leaking seals around the valve cover, oil filter housing and rear main bearing, as rubber can become brittle when the car sits for long stretches. Given the vehicle’s age, a thorough review of the service book is essential to confirm that the timing belt (or chain, depending on the specific 911 variant) and water pump have been replaced at the manufacturer’s intervals, and that the coolant, brake fluid and gearbox oil have been refreshed on a calendar basis. Inspect the suspension for any play in the front and rear wishbones, worn bushings or cracked coil springs, which may manifest as clunking noises over bumps. The brake discs should be examined for surface rust or scoring, and the calipers checked for even piston movement to avoid binding. Finally, listen for any abnormal engine or exhaust notes that could indicate a misfire, exhaust leak or failing catalytic converter, and verify that all electronic systems, including the ABS and stability control modules, operate without fault lights on the instrument cluster.