The most obvious difference between even-firing and odd-firing engines is their sound. But before we dive into that, let's understand what odd- and even-firing means. In a four-stroke engine, one ...

The five-cylinder engine is uncommon relative to the ubiquitous four-cylinder, six-cylinder, or eight-cylinder variants. As an odd-number engine, it certainly is in a class of just three such engines.

If you are a motorhead, an unusual engine will immediately get your attention. Most vehicles today have either an inline or V-shaped configuration, so anything peculiar will immediately stick out. If ...