The # of Cylinders doesn't really matter.Plenty of Porsches have been 4 cylinders.![]()
It's the amount of liters you displace relative to the amount of HP / Torque you can extract from the work done by the engine.
Koenigsegg TFG "Tiny Friendly Giant"
It has a I-3 configuration "Inline 3-cylinder".
It displaces 2.0 liters and has BIG Cylinders.
The engines "Dry Weight" is 154 lbs (70 kg)
Yet w/o Turbo, naturally aspirated; it makes 300 hp.
w/ Turbos, it goes up to 600 hp.
It's Small, Light Weight, and uses some of the most advanced metallurgy & design principles.
It's basically the most advanced Cylinder based ICE around.
It is truly a next generation ICE design in every sense of the word.