BMW 1 Series - Tech Talk For All Gen Of 1 Series
Hi, I have an F21, 1 Series 125i, 65 plate, with 25k miles.
I have noticed that the inner exhaust pipe is very sooty, the outer exhaust pipe is clean.
Anyone else with an F20/21 petrol engine car noticed this?
Any ideas, please let me know.
I think I will take it to BMW in the New Year.