2018 BMW 440 3.0L Petrol · NG68 AEP

The vehicle is currently unroadworthy following a significant failure in its most recent MOT test on 29 May 2026. While the car previously maintained clean records, the current trend shows a sharp decline in the engine management and emissions systems. The tester recorded multiple failures regarding carbon monoxide levels and lambda readings at both idle and fast idle. This indicates a potential combustion issue, faulty oxygen sensors, or a degrading catalytic converter that requires immediate diagnostic attention to meet legal road standards. The mileage pattern remains consistent with an eight-year-old premium vehicle, averaging approximately 8,000 miles per annum. Records show a gap of roughly 6,700 miles between February 2024 and June 2025, followed by a more rapid accumulation of over 4,000 miles between June 2025 and May 2026. This suggests the vehicle has been used more frequently recently, which often correlates with the wear of mechanical components and the onset of the emissions-related faults seen at the 63,644-mile mark. A buyer must prioritize a thorough inspection of the exhaust system and engine performance to address the recent emissions failure. The history from February 2024 at 49,551 miles noted worn front brake discs and a structural tyre failure on the nearside rear, indicating that consumable components are reaching the end of their service life. Given the lambda failure, a specialist should check the spark plugs, ignition coils, and fuel injectors to ensure the engine is not suffering from a deeper mechanical fault beyond a simple sensor replacement.