Bhai being very honest, run away as far as possible. we here at Pakwheels also love Bimmers. but the thing is the car is a 26 year old German Manufacture, you dont know what kind off jugaads our mechanics have done to make it run all these years. the biggest issue with these cars will be the electrical ones. Parts are almost non-existent and if available they are real expensive.
One of my friends had a mercedes 230D 1986. the outer door handles costed him 25000 a pair. Maintaining the car even as a second driver will be a huge problem sometimes people have to wait even for the parts to get imported for months just to make their cars drive-able
Buy a Toyota or a Honda Product you will be much better off