LS-swapping a BMW is often seen as a reliability upgrade because it replaces BMW’s high-strung, maintenance-heavy engines with a Chevrolet LS V8, known for being simple, robust, and inexpensive to maintain. Many BMW engines—especially inline-sixes and V8s like the N54, N62, or S65—can be costly to repair when issues arise (think rod bearings, VANOS, cooling systems, or timing chains). In contrast, the LS platform uses pushrod architecture, fewer moving parts, and has a massive aftermarket for af