A 3 cylinder engine is much more fuel-efficient compared to a 4 cylinder engine of the same size. This is because of two primary factors, reduced frictional losses and lighter weight. Since there is one cylinder less, the frictional losses caused by metal surfaces coming in contact within the engine block is lesser.
on 19 Feb 2020
But to deliver the same power the 3 cyl engine's cylinders shall be of higher size meaning more friction.
For this, we would suggest you walk into the nearest dealership as they will be the better person to assist you. You can click on the following link to see the details of the nearest dealership and selecting your city accordingly - Car Showrooms