BMW X1 (E84) Problems | Weaknesses of the Used E84

Should you buy a used BMW E84? Pros and cons, maintenance costs and common problems of the BMW X1.
Transmission problems: manual and automatic
Engine reliability: 1st-gen BMW X1 had non-turbo 2.0 N46 (143 and 150 HP), N20 180 HP turbo and 3-liter 258-HP N52B30 and 306-HP N55B30 gas engines. 3-Liter X1 is a hard car to find in a good condition. Diesel N47 116-218 HP engines were also installed.