The N52 engine was BMW's last naturally-aspirated straight-six, focusing on weight reduction, increased power, and fuel efficiency. Known for reliability, the N52 featured innovations like ...

These performance muffler options could be the key to unlocking a sporty tone with your E8X or E9X BMW 1 or 3 Series.

The N52 is reliable, as far as BMW engines go. But that doesn't mean there aren't problems with it. Here are the years to watch out for in particular.