I'm no expert I've only had my evo 5 months now, maybe an idea to get it serviced and checked over by an evo specialist just to be safe, I have a local specialist so this I had them have a quick look over soon as I got it.
As for the cupra r keeping up with AWD cars like the impreza and evo people just think they are twice as fast as any other car, in the real world you loose quite a lot of power from the engine by the time it's at the wheels in an AWD, in comparison a FWDcar looses much less power by the time it's transferred to the front wheels, therefore once rolling (assuming its dry and grip isn't an issue) a Fwd car with less power will keep up with an AWD car with more power. If. You race off the lights I guarantee you will be amazed at the gap you create.
Off the top of my head
fwd power loss from flywheel to wheel is 5%ish
Rwd 15%
And AWD 20-25%
(Just roughly as I did research this before when a 310bhp Astra Vxr smoked my pals 370bhp evo so I heard anyway I wasn't there)