Quote:
Originally Posted by bandit86
I heard the 2011 mustang 4.0 6 banger was a 40mpg car out of the gate, I thought someone would have cashed in on that already
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I wouldn't hold my breath for that, specifically, but let's consider some 6-cyl engines are very close in displacement to the smallest V8 within the range of its manufacturer. With fewer moving parts and internal frictions, maybe a V6 into a full-size car could fare much better than a V8 regarding fuel economy, and not so bad performance-wise.