The 2013 320Li with the N20 engine is generally reliable. Though some reported common problems in similar used BMW models include potential oil leaks from valve cover gaskets, oil pans or vacuum pumps (more likely after 100,000 km), occasional electronic system glitches, and routine brake pad wear that can impact maintenance cost over time. However, this specific used car has only 80,000 km on the odometer, zero ownership transfers, and has passed comprehensive inspections confirming no major accidents, fire or water damage. It features like-new seats with zero wear and full 4S shop maintenance history, indicating meticulous care that minimizes these common problems and solidifies its status as a reliable used car worth buying.