I found that these lenses can crack because people keep slamming the trunks shut and the lenses (being on the hatch) take a beating every time. Lower the trunk slowly and then gently let it drop. This car's trunk has a wonderfully designed closure mechanism that seals perfectly and firmly with a click. There is no reason to be slamming the trunk shut on these cars. I have thought about replacing the stock bulbs with LED's though for the added night visibility they provide but have only thought about it as I'm not sure I want that much brightness on the back of the car based on some of the pics I've seen of others who replaced them.