2020 BMW X3 M Competition Auto 3.0L Petrol · YC70 AEG

A pattern of long-term roadworthiness interrupted by recent brake component wear defines this vehicle's MOT history. After two consecutive years of passing with no recorded defects in 2023 and 2024, the most recent test on 14 November 2025 flagged an advisory regarding the rear brake discs being worn, pitted, or scored on both sides. This indicates that while the vehicle has maintained a clean compliance record for the majority of its recent history, the braking surfaces are now reaching a point of measurable degradation that will require attention. The recorded mileage of 67,031 miles for a 2020 model represents an annual average of approximately 11,172 miles, which aligns with typical UK usage for a vehicle of this age. This consistent accumulation suggests regular road use rather than long periods of stationary storage, which generally reduces the likelihood of age-related deterioration in rubber seals or fluid stagnation. However, this level of mileage means that mechanical components subject to friction and heat, such as the braking system and suspension bushings, are entering a phase of the lifecycle where wear becomes more frequent. Given the specific advisory regarding the rear brake discs, a prospective buyer should focus heavily on the braking system during a test drive. Listen for any rhythmic clicking or grinding noises coming from the rear of the vehicle when moving at low speeds, and feel for any pulsations or judder through the brake pedal when applying pressure at motorway speeds. The pitting and scoring mentioned in the 2025 report can affect both stopping performance and the longevity of the brake pads, so it is important to verify if the discs are nearing the minimum thickness threshold. Beyond the brakes, the consistent mileage profile warrants a close inspection of the suspension and drivetrain components for any signs of premature wear. While no specific suspension defects have been flagged in the MOT history, the transition from a clean record to a brake advisory suggests that consumable parts are beginning to require replacement. During a test drive, pay close attention to any knocks or clunks when traversing uneven surfaces or during low-speed cornering, which could indicate wear in the suspension linkages or bushes that have not yet reached the threshold for an official MOT advisory.