Car not starting

You know all six spark plugs didn't become fouled at the same time and can't cause stalling. Instead of guessing, you need to check for spark, then fuel pressure. If spark is missing you need to check if the automatic shutdown (ASD) relay is turning on during cranking. You also need to read the diagnostic fault codes. Cycle the ignition switch from "off" to "run" three times within five seconds, leave it in "run", then count the flashes of the Check Engine light. There will be a series of flashes, a short pause, then another series of flashes. That's the two digits of the first two-digit code. After a longer pause the next code will flash. The last code will be 55 which can be ignored.