A naturally aspirated V6 engine was once the default choice for anything larger than a compact, but today the breed is slowly disappearing, replaced by smaller engines bolstered by turbocharging or electrification to make up any performance deficit. Whether it’s tightening emissions rules, buyers chasing better fuel economy, or automakers pushing to electrify their lineups, those big sixes with their effortless power delivery and silky smoothness are getting harder to find.
