I autoX my MP3. I am leading points in G-stock, overall, and rookie of the year points in my region, and I'm in 5th overall as competitor of the year and 2nd in G-stock in another region currently. This car rocks.
I should also say that my daughter will continue autocrossing the MP3 in the street tire class. I drove it last year and at few events this year. It is great fun to drive but we got it for her.