Can engine is very very important for a car to function very well. Engine is just like the brain. All human activities cannot function very well without the brain like wise the engine. It supplies power to all parts of the car making it possible for it to function very well.

yes of course car engine is what makes the car to function well, that is why is good to get a better engine for your car to avoid spending of money.
it also works like human brain!
because that is what makes it a car, forgot about the fancy or the design on the car without the engine the car is nothing