Eli5 what makes a car fast?

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Tittle says it all how does a mechanic modify the engine/car components to make it faster.

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Anonymous 0 Comments

More power is the most straightforward. Power comes from burning fuel. This generally means getting more air into the engine so that more fuel can be pushed into the engine(more fuel without more air=all the fuel won’t be burned and is just wasted), or ensuring that the fuel burns more efficiently(e.g. higher compression or better fuel injectors), or reducing friction or other losses (bigger exhaust for example).

Or if “faster” means faster on a track, then cornering and acceleration becomes important. Better cornering helps because you don’t need to slow down as much. Better tires provide better grip. Better suspension keeps tires in contact with the road to maximize the use of the grip. Lower weight helps accelerate faster, take corners faster, and brake faster.

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