소비자는 알 수 없는 가성비 제품의 두 얼굴 / BMW 5series gt

Hello, this is Maintenance Box. This vehicle is a BMW 5GT vehicle. It was brought in for inspection and repair due to complex problems such as lack of power and white smoke. General consumers are not aware of cost-effective products. If you manage your vehicle, it will have a big butterfly effect later. I recorded this process in a video.