2017 Ford Transit 2.2L Diesel · BA66 OSK

The latest MOT test conducted in February 2026 resulted in a failure, primarily due to nearside exhaust emissions exceeding the legal limit and faults with the nearside side repeater. When evaluating the overall maintenance trend, the record shows signs of regression rather than stability. Although the vehicle achieved clean passes in 2023 and early 2025, the recurrence of major exhaust emission failures in both January 2025 and February 2026 is a significant red flag. This pattern suggests an intermittent or worsening issue within the engine management system, fuel delivery, or the exhaust after-treatment system, such as a clogged diesel particulate filter or faulty injectors. The recorded mileage of 160,803 miles for a nine-year-old vehicle indicates an annual usage rate of approximately 17,867 miles. This is considered high mileage, consistent with a commercial workhorse, and implies that the vehicle has been subjected to heavy, consistent use. Mechanically, this level of mileage increases the probability of wear on high-stress components including the turbocharger, clutch assembly, fuel injectors, and various suspension bushings. The accumulation of miles means that the vehicle is entering a phase where major component replacement is more frequent, and the total cost of ownership is likely to escalate. During a test drive, you must pay close attention to the engine's performance and the exhaust output. Listen for any irregular idling, hesitation under load, or visible smoke, as these are symptoms of the emission issues noted in the MOT history. The previous failure involving a rough offside front wheel bearing and an electronic stability control warning lamp means you should listen for any humming or grinding noises from the wheel hubs at speed and ensure the vehicle tracks straight without pulling to one side. Furthermore, given the historical advisories regarding thin brake pads, inspect the brake discs for heavy scoring or warping, which would manifest as a shudder through the pedal during deceleration. Beyond the documented failures, a thorough physical inspection of the chassis and suspension is essential. Check for signs of corrosion on the underside and ensure the suspension bushes and coil springs are not showing signs of excessive play or fatigue, which would cause clunking over bumps. Given the high mileage, verify that the service history is comprehensive and that oil and filter changes have been performed regularly to protect the engine. You should also inspect the tyres for uneven wear patterns, which could indicate alignment issues, and check the condition of all rubber hoses and belts for perishing or cracking, which is common in high-use commercial vehicles.