Got the stage one fix done last Thursday, have my $4100 bucks in the bank as of today. They had a hiccup with their iPad and could not print out the paperwork. It got emailed to me early this week and I got the chase email last night, put my bank account in and have the money as of today. Went very smoothly. Have no issues with performance with the fix so far, seems peppy but it might be just in my mind lol. Still on same tank so no clue on mileage (car says I am 44.9mpg with a 1/3 of a tank left). Will do the math for mpg when I fill up. But so far seems normal. No regrets, glad I have kept it.