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Automotive glossary

Three-Cylinder Engine

A three-cylinder engine is a small, light engine with three cylinders, often turbocharged, used in many compact cars.

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What is Three-Cylinder Engine?

Fewer cylinders mean less internal friction and weight. It has a natural rocking motion that is often damped by a balance shaft or mounts. Many engines of about 1.0 litre use this layout. Three-cylinder engines are also used as compact range extenders and in some hybrids.

How it works

With 240-degree firing intervals, the engine fires evenly but creates an end-to-end rocking couple.

Why it matters for your car

Some vibration at idle is normal; strong shaking may point to mount or misfire problems. Follow oil change intervals closely on small turbo engines.

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