What are the disadvantages of a three-cylinder engine?

[HenryDella]

The disadvantages of a three-cylinder engine include high cost, high vibration levels, and low acceleration performance, as detailed below: High cost: The manufacturing and maintenance costs are higher than those of a typical four-cylinder engine. To achieve high output with a small displacement and address the strong vibrations caused by structural asymmetry, many new technologies are required. High vibration levels: Unbalanced working conditions make it more prone to vibrations. Due to the unequal number of cylinders on both sides of the engine, it is more likely to experience shaking during operation, and the engine noise may also be louder. Although balance shaft technology is used to mitigate excessive vibration, the vibration levels are still higher than those of four-cylinder or six-cylinder engines. Low acceleration performance: Smaller intake volume results in generally weaker starting and acceleration performance. Compared to a four-cylinder engine, the absence of one cylinder leads to a smaller intake volume, which also limits acceleration performance during the starting phase.