Traditionally, all-wheel drive systems employ the use of all four tires on the vehicle, thus making the vehicle drive better in adverse weather conditions but at the expense of efficiency (AKA uses more fuel). Hyundai wanted a better way to deploy an all-wheel-drive system, one that gave drivers the advantage of all-wheel-drive without giving up efficiency in the process. And somehow, Hyundai was able to do that. Because Hyundai all-wheel-drive system is a bit different, some folks wonder exactly how Hyundai was able to make an all-wheel drive vehicle so efficient.