BMW 40,000 kilometers to replace spark plugs

  9
 August 2, 2024
My BMW 530 Li is currently driving 40,000 kilometers. As early as 20,000 kilometers away, the 4s shop asked for a replacement of the spark plug. At that time, it was unbelievable and asked the staff of the 4s shop what kind of original spark plug it was. The staff said it was a Shuangyijin spark plug, thinking that the Shuangyijin spark plug would have to take 50,000 kilometers to replace it, so there was no replacement.
Recently, I feel that fuel consumption is a bit high and wonder if it has something to do with the spark plug. According to the data, this high-power engine (b48) has higher requirements on the spark plug, so it was decided to replace the spark plug.
I consulted some professionals and bought ngk’s iridium platinum spark plug. The master inspected the original spark plug that was removed and found that the side electrode was a little ablated and there were many carbon deposits on the surface. The master asked me if I often parked my car to turn on the air conditioner. I said it was very rare. Maybe it was because I drove in the city and there were often traffic jams. I usually add Sinopec’s No. 95 gasoline.
Picture above.

It was discovered that the original spark plug was actually a domestically produced championship brand.
Driving today, I noticed an obvious change. In the past, when I was starting slowly at a low speed, the rear wheel would crack when driving about half a meter. It seemed to be pressing against a stone, which puzzled me. Because I am usually used to turning on auto hold, I think it was for this reason that I turned off auto hold. The result was much smoother, but there were still crackles from time to time. There was a traffic jam on the road today, and I was still used to turning on the auto hold. When I started slowly, the original feeling of the rear wheel popping was gone. I tried it many times, but it was the same. This surprised me. Is it related to replacing the spark plug? Please ask the gods to help answer.