I have a 2014 Mazda 3 ( iGrand-Touring with the 2.0 Skyactiv engine and automatic transmission ) with around 55k miles. I bought the car back in January with around 45k miles from a person who lived in Huston. It cold starts fine but if I drive it and park it and start it up less than 20-30 minutes after parking it, it sometimes, but not all times hesitates to start. ( taking longer to crank and stuttering ). Once it starts it runs great and there aren't any warning lights on. If I let it sit longer than 30 minutes before restarting it, it starts fine. I'm also going to mention that it was serviced every 5000 miles by dealer its whole life.
Well I would start by having the battery tested. You could just have a weak battery. If not that try my video. Make your car run better with a little spray cleaner
