I will preface this by saying that I am no tech guru so I appreciate any thoughts or advice that may be found relative to a starting issue I have been experiencing with my vehicle. The following are the details: Vehicle Details: 2013 Mustang GT 5.0 Premium Convertible 6 Speed 75,000 miles Recently replaced battery and spark plugs (after issue started) Car is driven very intermittently as it is now a "weekend car" No engine performance mods No check engine lights Issue: (an example of what happens) The car starts perfectly fine (after sitting for a week or two) I drive the car 20 miles (mix of street/highway) The car remains parked for 5-6 hours When I go to start the car it cranks several extra times as if it is having a hard time turning over, and then (up to this point) will eventually start The car drives fine on the way home with no noticeable issues If I turn the car off immediately when I get home and then immediately turn it back on, it will start with no issue. What the heck could this be? Any thoughts on where I can start with troubleshooting or evaluating? I appreciate any help!!