Not a big problem at all but an annoying one, car sometimes knocks feels from underneath as can feel it through my feet, mainly when stopped at lights or low speed, im thinking may be exhaust but wondering is there anything common on these? its a 54 plate impreza wrx

 

Rear shocks are common problem on them.check engine/transmission mounts aswell

 

Maybe drop links as they are comman for failing

 

i just been under it and moved the exhaust slightly and the noise stopped

 

need to get it on a ramp and see if it can be moved

 

I've got exhaust hitting the the bottom of car, very annoying, it only happens on dethrottle

 

might be a good excuse for a new system

 

turns out its the exhaust hitting the sub frame