The straight-six is widely regarded as the smoother engine because its firing order naturally balances reciprocating forces. This leads to a linear, vibration-free power delivery.
; primary and secondary forces cancel out. The Differences Between V6 and Straight-Six Engines
The simpler design of the straight-six—fewer moving parts and more space around the engine block—generally makes it easier and potentially cheaper for amateur mechanics to maintain. Engineering and Application The straight-six is widely regarded as the smoother