Starting the vehicle is consistently difficult. It usually takes 3 or 4 attempts to get the car to turn over. The dealer has had the car in the shop for more than 4 weeks during the first two months that we have owned it. The dealer has failed to fix the problem.
Potential MPV buyers should seriously consider whether they want to pay in excess of $20K for a vehicle that will not start.
I guess you'd better switch the dealer. There is a technical service bulletin on the issue:
"Some vehicles with VINS lower than JM3 LW28G* 10166896 may take an excessive amount of cranking time before starting (approximately 4-10 seconds). This condition usually occurs after the vehicle has been driven and then parked for more than 30 minutes. This may be the result of inadequate fuel system pressure due to a stuck open fuel pressure regulator."
If you have problems that you can't have your dealership solve, make sure you go to Mazda MPV owners' group at http://www.vakcer.com/mpv and use the forum to post a question. There are a lot of other owners who might have encountered the same problem in the past... I hope this helps.