17 renegade sport 2.4l 29.8 mpg

OK I don't know if I am in the right spot for this, but. We have read a lot on the Renegade and I have some thoughts and questions. 17 Jeep Renegade Sport 4+4 2.4l auto. 1. battery: It seams like a lot of people are having trouble with not starting, Is the battery just no good? Should we up...