Up here in Canada, most vehicles have the block heater as an option if you are ordering your vehicle.
If you buy 99% of vehicles off the lot, they already have the blockheater installed.
It is an option though, as others have stated, in the South vehicles do not require a block heater.
I bought a used Toyota in the 80's, and found out that there was no block heater. It did not take long to install one, as temps can dip pretty low here.

Is that when thably reduce the wear on the engine on start up.e jeep is parked in the garage? The oil type may be one reason why it will even turn over. If you had a block heater, it would prob

Not to flame you, but you must have one magic TDI. My 1998 Jetta I had might start at 5 below (if the sun was out) but that's it. My Dodge CTD has started at minus 18 but it took a couple of tries and it was a grumpy SOB smoking out the whole neighborhood.

I'm sure the Jeep will start with it that cold out - my Cherokee did, but you have to worry about engine wear. Even more important, by plugging it in you get a jump start on getting some heat in the Jeep!

Thanks to all who replied, I'll check by the battery and fuse box for the cord.

I agree with all the benefits, I just don't agree a block heater is necessary, as some seem to think.

As for my TDI, it's not magic. It just does what it was designed to do. It has never failed to start, (with the exception of a bad glow plug wire harness) no matter how cold. I did install a heater on it, and I use it when I can.

If your jeep does not have a factory block heater installed and you want to save a couple bucks buy a magnetic one there around $20 and work well .