2003 BMW 525i Q&A

2003 BMW 525i Question: Driving to a stop red light and when I step on the gas the car won't go it slow

After stopping at the red light stepping on the gas when it is green light the car won't move until you keep on stepping on the gas hard. It is going like 10 20 mph then suddenly it will run normal again -
Answer 1
scan codes and post so we can adv -