Exhausts have been long viewed as a sign of power. Size matter people will claim and it is often percieved as a case of the more the merrier.
This corsa has a very usual quad exhaust arrangement – the exhausts are an isosoleze trapezoid with rounded corners and the inner exhausts are inverted. For power you would want one exhaust per cylinder but in this and most show car applications the single exhaust is split and diverted into multiple tail pipes.
this is mint website 4 the cars