2004 Porsche 911 3.6L Petrol · C4 MYK

An intermittent pattern of component failures and corrosion advisories defines the mechanical history of this vehicle, culminating in a failed emissions test on 22 July 2026. While the most recent test on 23 July 2026 resulted in a pass with no recorded defects, the preceding failure regarding an exhaust lambda reading outside specified limits indicates a recent period of engine management or combustion irregularity. This follows a dangerous failure in April 2023 involving a structural bulge in the nearside front tyre, suggesting that while the vehicle is capable of passing inspection, it has experienced specific, acute safety and emissions issues within the last three years. The recorded mileage of 36,995 miles over a 22-year period represents an exceptionally low annual average of approximately 1,682 miles. Such a low rate of accumulation suggests the vehicle has spent significant periods stationary or has been used only for very infrequent, short-distance trips. Mechanically, this usage profile means that while drivetrain components may show minimal wear from mileage, other elements such as rubber seals, suspension bushings, and fluid integrity may be more influenced by age and periods of inactivity rather than mechanical friction. Specific attention must be paid to the braking system due to recurring advisories regarding corrosion on the central brake pipes. Records from April 2022 and May 2021 flagged corrosion on the central rear and front-to-rear brake pipes, noting they were covered in grease or other materials. During a test drive, it is essential to check for any changes in pedal feel, such as sponginess or a lack of firmness, which could indicate that the reported corrosion has progressed to a point of fluid ingress or pressure loss. A thorough visual inspection of the brake lines for any signs of weeping or significant surface degradation is necessary to ensure the structural integrity of the hydraulic system. The recent emissions failure also warrants a focused investigation into the engine's combustion efficiency. Although the vehicle passed the subsequent test, the previous lambda reading failure suggests a potential for intermittent sensor issues or fuel trim irregularities. On the road, listen for any uneven idling when the engine is warm or any hesitation during acceleration. Additionally, given the low mileage and the history of tyre structural failure, a close inspection of all tyre sidewalls for any signs of cracking or bulging is advised to ensure the rubber has not perished due to age or prolonged storage.