Engineering Explained on MSN

AWD cars - all wheel drive - explained

How does all wheel drive work?This video explains how All Wheel Drive works and how it differs from 4WD. It also explains ...
USA Today

What is the difference between four-wheel drive and all-wheel drive?

AWD and 4WD sound similar in name, but they are very different. AWD is always active on most vehicles, while 4WD can be customized depending on the situation. A lot of people use the terms four-wheel ...