Torque is a measurement of an engine’s power, closely related to horsepower. More torque indicates a more powerful vehicle and is also a good indication of its acceleration.
Although there are many aspects that determine the power, a higher number of cylinders is generally a good indication of the potential power of the engine.
Horsepower is the most common unit for measuring the power of an engine.
A turbocharger compresses the air entering the cylinders, allowing more air (and therefore more fuel) to be added - resulting in a more powerful explosion. This leads to an increase in horsepower without increasing the size and weight of the engine.
This measurement is the total volume of all the engine's cylinders, also known as the engine displacement. This is one of many aspects of an engine that determine its horsepower, but generally speaking a greater size indicates more power.
A Stop-Start system automatically turns off the engine when stopping in traffic or at a red light, and seamlessly starts it again when pressure is applied to the accelerator. This saves fuel and is more ecological.