Smaller engines, typically three or four cylinders ranging from 1.0 to 1.6 litres, are popular in compact cars and family hatchbacks. These engines are generally more fuel-efficient and cost-effective to maintain, thanks to their lighter weight and fewer moving parts. Turbocharging and hybrid technology have further boosted their capabilities, allowing even a 1.0-litre engine to offer performance that rivals older 1.6-litre units.

However, smaller engines may struggle when paired with larger vehicles or during heavy driving conditions, such as towing or long-distance motorway cruising. They can feel strained under load, which may impact fuel economy and durability in the long run. Still, for city driving and light daily use, they often strike a perfect balance between economy and usability.

Larger engines, typically 2.0 litres and up, offer more torque and power, making them ideal for performance cars, SUVs, and luxury vehicles. With more cylinders, such as six or eight, these engines run smoother and often quieter, delivering relaxed performance with fewer gear changes and lower engine revs.

But they come at a cost: increased fuel consumption and often higher servicing expenses. More components like spark plugs and belts mean more potential wear and tear. Additionally, heavier engines can affect handling and ride quality, although this is sometimes compensated for with sportier suspensions in high-end models. Ultimately, larger engines shine when power, refinement, and capability are top priorities.