Reddit reviews Traveler's Guide to Mexican Camping: Explore Mexico, Guatemala, and Belize with Your RV or Tent (Traveler's Guide series)

I think that $2.50/gallon average fuel cost is low. Canada, Mexico, and much of the west coast USA is more.

Traveling in Mexico with a trailer will make you anxious, guaranteed. You will want to travel on the toll highways (autopista) because they usually give you a wider lane width as well as (usually) a better quality road surface. Tolls can get expensive. The "libre" (free) roads are much slower, much more interesting, but can be VERY rough on your suspension and tires (Mexican mechanics are very talented at suspension work and tire repair though). You need to plan your routes carefully through towns because many roads become VERY narrow (be prepared to back up on occasion, it's happened to me several times in a full size truck even without a trailer). The payoff is that Mexico is an awesome and incredibly beautiful place to visit and people are genuinely happy that you are enjoying their country. Another advantage is that Mexico is very inexpensive if you travel outside of the tourist areas, especially when buying food at local markets (though there are also plenty of inexpensive super market chains as well as Walmart and Costco). You won't meet many other American campers, but you will definitely meet European and South American campers. Download the ioverlander app and buy the most recent edition of Mexico Camping by Church & Church that you can find.

Central America is also incredible, but I wouldn't drive it while towing a trailer. Roads are very narrow and often very steep. I saw very few full sized pickup trucks in Central America, let alone travel trailers. I have a full size Chevy truck with pop-up camper and was too wide for some streets, which is nerve-wracking when you have to back up in traffic (luckily locals were always helpful in getting me out).

You will need to pay a temporary import tax (TIP) on your vehicles when you enter Mexico, and will get this refunded when you exit. You also need to buy Mexican vehicle liability insurance, shop for this online, it's not expensive.

Whoops here ya go