2004 BMW Z4 2.2L Petrol · K5 AVG

The vehicle presents a concerning roadworthiness profile characterized by a trend of reactive rather than proactive maintenance. While it passed its latest test in June 2025 at 128,937 miles, this followed a significant failure just eleven days prior. That failure revealed critical faults, including an inoperative engine management light and a faulty SRS warning lamp, alongside a failing parking brake ratchet. The persistence of corroded rear brake pipes and oil leaks across multiple years suggests that mechanical issues are only addressed when they threaten an MOT pass rather than as part of a preventative schedule. At 128,937 miles, this 22-year-old Z4 averages a low annual mileage of approximately 5,800 miles. However, the data shows a more recent spike in use between May 2023 and June 2025, where the car covered over 13,000 miles in just two years. This low-average usage combined with the age often leads to the degradation of rubber components and seals, which is evidenced by the recurring deterioration of brake hoses, anti-roll bar linkages, and shock absorbers noted throughout the record. A buyer must conduct a thorough physical inspection of the braking system and underbody. The record repeatedly flags excessive corrosion on the brake pipes and deteriorated front hoses, which indicates a high risk of future failure if the entire system has not been replaced. The persistent oil leaks from the engine, gearbox, and differential require close scrutiny to determine if they are merely weeping or active seal failures. Furthermore, the history of play in suspension arm ball joints and worn rear shocks suggests the suspension is nearing its service life and requires a comprehensive check to ensure the vehicle remains stable at speed.