Im got different thoughts to the other guys, get the dealer to fix it, but do get a second opinion on the damage (not a backyard mechanic) plus an agreed repair process before you start. That way you end up with a new car with a new engine, whats to say you don\'t go and buy another one and get the same issue 4-6months down the track and its out of dealer warranty. Providing it was fixed right, you should be problem free (which they have to sort anyway if you get any in the first three months) and it will have better resale value (with receipts) in the future.
I saw that car on TM, worth keeping in my opinion, rare at nz new to.
My 2c anyway.