I saw this Jeep today, a big “4 x 4” written in large letters on the back. So I got to wondering, why not just say 4WD for four wheel drive? Presumably one of the 4’s mean it is 4WD, but what’s the purpose of the other “4”? I mean, think about it, no secret it has 4 wheels like any other passenger vehicle, right? So why the other 4?
Then I got to thinking "Well, maybe 4 x 4 is a term that differentiates this type of four wheel drive system from other types such as AWD or all wheel drive. 4 x 4 means maybe means it has a transfer case, so the driver can switch between 4WD and 2WD at will. Maybe it means it has locking hubs. Vs. AWD which is always in some version of 4 wheel drive.
Any ideas, or is 4 x 4 just a marketing term and has no meaning beyond four wheel drive?