Now that my rant is over... let's actually evaluate a Jeep Wrangler as a Mustachian purchase. They are durable, customizable, easy to maintain. You can buy one for 5-7k. You can drive it for 50 years. My friends dad has a 1950's Jeep and it's still functional.
So lets say over a lifetime, you have to replace an engine, transmission, clutch, maybe an axle or two, periodic tires and other maintenance.
Engine $2500-3000, replace every 200-300k miles (a rebuild is even cheaper)
Transmission $500-900, replace every 300k miles
Clutch $500, replace every 200k miles.
4-5k every 300k miles is cheaper than any Mustachian vehicle I've seen suggested here. Gas mileage is about 13mpg, it's not a daily driver. Off-roading frequently will require additional maintenance and repairs, but they are still relatively cheap for anyone who's willing.
The parts are cheap, the parts will always be cheap, because they are still building replacement parts for 50+ year old vehicles. The parts are mostly standardized for multiple models and many of the parts are so mass produced they are also available for lightweight utility trucks and other vehicles. Mustachian perspective is to drive a car for 200-300k miles and replace the whole car, because it doesn't have much value after that. Except a Jeep can keep going, all you have to do is replace a part once in a while.
These vehicles literally last decades if you take care of them, and provide opportunity for decades of recreational camping, hiking, and outdoors access you can't get parking at your local trail head.