The N52 engine was BMW's last naturally-aspirated straight ... Trust us if you do not want to front $3,000+ just to replace a cylinder head that has a known defect. Remember when we said saving ...

The BMW N52 inline-six engine has certainly earned its reputation of being not only one of BMW's most reliable engines, but one of the most reliable engines to come out of Germany as a whole.

In a world where most six-cylinder engines were V6s, BMW stuck with inline-six engines, offering a perfect blend of smoothness and performance. BMW's N52 was ... with smaller front brake discs ...