a three cylinder engine includes a vibration alleviation unit for alleviating vibrations in a vehicle . the vibration alleviation unit is disposed at least one of upon the crankshaft and upon a part that operates in unison with the crankshaft . the three cylinder is supported by engine mounts that are positioned upon at least both ends of the engine in the direction of the crankshaft axis . given that k v and k h represent spring constants of one of the engine mounts in the pitch and yaw directions of the crankshaft , m v and m h represent components of a primary couple that occurs in the three cylinder engine in the pitch and yaw directions , and m v0 represents the sum of m v and m h , then spring constants of the engine mounts are set such that k v & gt ; k h and the vibration alleviation unit is set so as to satisfy the condition 0 & lt ; m v / m v0 & lt ; 0 . 5 .