All wheels drive and 4wheel ….the difference between…..simply defined…..all wheel drive means….the vehicle can be driven at anytime and anywhere the manufacturer speed limit as it’s . 4wheel drive - can be driving only by selecting on your own and also has speed limit can not be driven over speed limit the manufacturer has recommended….because the transmission could be over hitting and could damage transmission as well, most this kind vehicle gear locked very difficult road as needed do not drive over 40mph . I toughest this very helpful for customer instead of mechanical function less confusion.
AWD control by computer system and 4WD control manually so 4WD off road cars and bad for snow cuz manual control system that's way always we see 4WD cars in the ditch snow time.