I had an '09 WRX. I didn't
I had an '09 WRX. I didn't modify it at all. At 30,000 miles I had to get a new engine due to a bent rod (Knock), and at 75k miles I had to get a new transmission due to a burnt out bearing. My brother had an '11 wrx that he cobb tuned. He had a head gasket leak around 115k. That's not that absurd given the boost was turned up and it had over 100k on it. But still, a new engine at 30k? Thank God I had a warranty.