Hello, I got my first car 3 days ago. a smart fortwo & pulse gasoline 45hp BJ 2002 with 80 000 km running. I’ve often heard that the smarts have problems with the motor and also on the internet many smarts were offered, which already have an exchange motor. I think that a smart is a super car for the city, which costs little in maintenance & that is important for me. I took a familiar to the test drive, which looked at it and said that Now I picked him up for good today and had a little bit of fear, because the engine was really extremely loud and made light grinding noises. Some say this is normal with the smart, because still I am afraid that I have to put in a lot of money again because what is wrong.. is this normal ???