MacBook Air 13" Mid 2012 Repairability Score: 4 out of 10 (10 is easiest to repair).

Once you manage to take off the bottom cover, all the parts are pretty easily replaceable.

Proprietary screws on the case require the right screwdriver.

All the components—including RAM and SSD—are proprietary.

This is a difficult machine for us to recommend because of the lack of upgradeability. The RAM and SSD are not currently upgradeable, although SSD options may become available in time. While Apple's continued use of proprietary screws is helping our booming tool sales, it's a bad thing for consumers.