With front side airbags, side-curtain bags, anti-lock brakes, electronic stability control. and a driver's knee airbag all included throughout the Lancer line, there's nothing sorely missing--at least not in a car with the price point of the base Lancer ES.
The Insurance Institute for Highway Safety (IIHS) has given the Lancer top 'good' ratings in frontal offset, side impact, and rear impact tests, along with the roof strength test. And in federal tests, the Lancer sedan and Sportback both earned four stars in both frontal and side crash categories, for an overall rating of four (out of five) stars.
Neither agency extends these results to Evolution and Ralliart models. The Evolution has its own exclusive, stronger and performance-focused body structure.
Because of the Lancer's rather tall beltline and thick rear pillars, it could be tough for some to see out when changing lanes or backing up (taller drivers won't have issue), so check that on the test drive.