Originally Posted by ovekvam
I think it makes sense with 3 cylinder engines in cars. BMW used to make 2 L six cylinder engine. They were smooth, but not very effective. A 2 L four is better in most ways. By the same reasoning, it is natural to make a 1.5 L engine with only three cylinders.
With turbo chargers, a 1.5 L engine now has enough power and torque for compact cars. The big cars will still have bigger engines with more cylinders.
I would say it has a commercial sense for the manufacturer, but no more. It is known that downsized turbo engines, like say audi's 1.4t are good on paper, but still thirsty and short on torque in the real world. Im sorry, I still enjoy my 2 liter M52B20 inline 6
Thats how dowinsized stuff works in real world: