Ever see Subaru WRX's with "Modded parts"? Subaru stopped repairing things on their "Bumper to Bumper Warranty". V8's don't have this issue. I also would never buy a Mitsu, because the quality sucks.
Same thing with the few few thousand Cadillac CTS-V's. The rear diff. would torpedo, due to ragging on the thing. Cadillac stopped replacing rear ends on em at Cadillac's expense.