I have a DieHard in my Festiva that was brand new when I bought it.. two years ago. I have put 40k on it since then though. I had it inspected the other day and they told me it needed to be replaced, why they tested without my permission in the first place.. don't know. They said it was down to 305CCA from 450CCA. It has been starting slow in winter ever since i've had it but never had problems starting (that small of a engine doesn't need much juice). I have a Exide in my other car that's 5yrs old, and it sat for a year not in use and still had almost a full charge. I used to think highly of DieHard's, I guess i've learned my lesson. I'm planning on runnning it till it's dead, the car will be having engine transplant surgery in the spring/summer. I'm hoping this isn't the norm since most batteries are made by Johnson Controls, I wonder if they make AA's batteries which I'm going to use if this one dies.