Engine warning light after only 20 miles

I picked up my new CX9 GT yesterday, and it''s already in the shop.  I drove it home from the dealer with no problem, but on our way out to dinner, the check engine warning light came on.  So, my second day with my new vehicle is spent with a crappy loaner.  Anybody else have this problem. 

I received a call from the dealership notifying me that the computer is bad and will need to be replaced.  They said that the computers are on backorder and they have no idea how long it will be to get one in.  They offered me a new CX9 on loan until the computer comes in.  I did not accept this.  I don''t want a loaner after I just shelled out 30k.  So, I met with the sales manager and asked about another CX9 GT that was on the lot that included the navigation package.  I told him I would split the difference, and he went for it.  So, I got the navigation package for 1250.  He is also going to throw in a roof rack that I had ordered for the first one.  All-in-all, I am very impressed by their willingness to make me a happy Mazda owner.

Very nice!  It is always good to hear a positive outcome in a situation like this.  Good luck with the new, new car.

It is funny how the owners manual tells you that break in period is 600 miles. I usually baby it for the first year. Not only do you break in the engine, but also the transmission and brakes as well. Hope that helps. As for how i break in my vehicles this has worked for me as i get a replacement car about every 10 to twelve years.