OMG who cares! A vehicle's longevity tends to have a lot more to do with its following than its parts durability. IF its a vehicle people "lust" after they will go to great pains to keep them going or even bring them back from the brink of the crusher and drive their value to many times what they were when new. Model As and Ts, '60s Mustangs, ANY H1 Humvee, ANY Jeep or Toyota LC or '66-'77 Bronco or mid-year Corvette or '67-'69 Camaro, FJ40, Suzuki SAmurai and on and on. Seen any in a junkyard lately?? ALL of them wear out quickly when used as the TV commercials show them being used!! All need rebuilding of major components. NONE will go 25 yrs being "used" without intense "maintenance" schedules or outright overhauls. Will a LandCruiser last 25 yrs puttering around in the outback without major issues, SURE! Will it last 25 yrs running the Dakar Rally? NO, it would be lucky to last through one at race speed. 99% of UN crap is just puttering around or on highways. 25yrs is irrelevant. The typical pissing match measure of longevity tends to be nothing more than how long something lasts when it is used in a pampered mode that a Honda CRV could provide. The nice thing about the LC was its inline 6, like the Ford 300ci I6, they are like tractor engines. Not powerhouses ON PURPOSE so that they will last longer than the average engine. And they installed axles heavy enough for the vehicle at those HP levels. Diesels used to be this way in pickups in America, but public demand made the mfrs up the HP so that the engines no longer have that 500K+ mile expectation. Now they show them pulling 20K pounds up Pike's Peak at 80 mph while jumping over logs in the road! How long to you suppose those POSs would last if actually treated that way in the real world? The great thing about the LC and the offroad vehicles the rest of the world gets (not designed by US companies) is that they aren't built for speed (barring the Land Rover/BMW types). They are built with thrifty reliable diesels with matched drivelines for the vehicle's intended weights and geared to provide adequate highway speeds and great offroad tq. THey tend to not be designed for extended 80+ mph highway usage. Here in the US however........Jeeps came with 3.07 geared axles and "standard" trans ratios! (not even granny geared 1st!). The CJs T176 IIRC was the last with what I'd consider a true crawler gear trans. We started building JEEPS for the highway, offroad was relegated to second tier in importance. Land Cruisers have gotten more plush but they also stayed true to making them offroad worthy mpgs be damned. Heavy axles, lockers, inefficient/weak kneed antiquated I6s, real bumpers that can be replaced with HD units not integrated plastic/styrofoam garbage like US SUVs now have that are 1 piece to the rest of the front of the vehicle!
If you want something to live the life of a TV ad vehicle's representation it will be built like a full-on race rig---and still break continuously. Want a killer enclosed overland rig? Grab a 4 door land cruiser drop in a mechanical UNMODIFIED Cummins 6BT and corresponding 5 speed/TC and ride into the sunset cackling like the genius I'd know you to be. Wanna build a Jeep to rival LC reliablilty, no problem, grab a 4.0 YJ, bolt up a carburetor, rebuild the ax-15 trans, install a set of early Bronco spec axles and enjoy. So long as you don't overload the engine with too much tire and not enough gearing the 4.0 is a reliability marvel. One of the LC's reliability factors is that they are very seldom modified mechanically. IF they are lifted it is VERY little compared to what Jeepers tend to do, same with their tires. Jeepers tend to want tires 10" taller than stock and then ***** about how their axles don't hold up!!! Give me a break. You can't beat physics. Engineers/mfrs spent millions developing workable combinations. Extensively modifying one parameter and expecting one or several of the others to not develop problems is the definition of ignorance. How hard is it to find a stock looking XJ with 200K miles on it? How hard is it to find a 15 yr old (age of last XJ made) Jeep Wrangler that is still stock? If stock, chances are it is still running like a champ (4 cyl trans not withstanding). However it is likely modified and has had to have some major component rebuilt or replaced with an upgraded version. On the other hand how hard to find a 200K mile 'Cruiser? How modified mechanically are they? Yes they may have ARB bumpers, roof racks and offroad lights but other than slightly wider/grippier tires most are stock in the driveline department. Hmm whaddya think?