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My 2015 Mazda3 has a 2.0 engine rated at 13.0:1 compression ratio. It does just fine with regular gasoline. No hint of a problem.
That has helped lead to a 4.6 cents-per-mile fuel cost over the ~40,000 miles I've driven it, which, admittedly, was before China's bat virus kicked us in the butt.
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