Originally Posted by pretendporsche
I can't make out.
I see the title is 179mph ish.
Hatchbacks are poor for aerodynamics. Look at the Focus RS etc claimed top speed of 163mph but in tests managed 157mph.
It takes a lot to gain big small amounts.
A 911 with 345bhp tops out at 180mph and an Audi R8 V8 only a few MPH faster.