==Common types of longitudinally placed engines==
This is a list of typical examples of types of engines which can be placed in motor vehicles:
* [[straight engine|in-line or straight engine]] -— where [[straight-two|two]], [[straight-3|three]], [[straight-4|four]], [[straight-5|five]], [[straight-6|six]], and even [[straight-8|eight]] cylinders are placed in a single plane,
* [[V engine]] -— where [[V-twin|two]], [[V4 engine|four]], [[V6 engine|six]], [[V8 engine|eight]], [[V10 engine|ten]], [[V12 engine|twelve]], or even [[V16 engine|sixteen]] cylinders are placed in two separate planes, looking like a "V" when viewed from the end of the crankshaft,
* [[flat engine|flat or boxer engine]] -— where [[flat-twin|two]], [[flat-4|four]], [[flat-6|six]] or more cylinders are arranged in two diametrically horizontally opposed planes,
* [[W engine]] -— where two (narrow angle) vee engines are siamesed together (within 180°), where at [[W8 engine|eight]], [[W12 engine|twelve]] or [[W16 engine|sixteen]] cylinders are arranged in four separate planes,
==References==
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