I bought a 2009 Mazda 5 in March. It was running fine until a month ago it started running rough. I thought my catalytic converter was clogged but a few days ago it was driving and just shut off and wouldn't start back up. I thought if it was the cat it would cool down and I could at least start ur up to get it home but no it wouldn't start and still won't. I'm starting to think it's the ignition switch or ignition coil. Anyone who can help diagnose, please let me know.

 

Not much anybody on the internet can do with the information provided; have you had the codes read?