I've been running this cooler for two years.  I am a general contractor and this sits in my back seat floorboard year around.  It is still running strong, still cooling as good as it ever has.  The only complaint I have are with the lid, it doesn't seal very good and the tabs on the side (plastic numbs used for hinges) aren't strong enough.  After only a couple of months they wore out and now everytime I open the lid it tries to fall off..... no big deal though, I've gotten used to it and now I know how to open the lid so it doesn't fall off (plus it's easy to get back on if it does).