1 - 1000% depends on maintenance history. If maint was kept up...I'd say 60-75% chance....no science on that number.
2 - undercarriage condition...notorious for rusting away. Overall great vehicles...undercarriage...not so much.
3 - medium in my experience...and I got three Subes...16 OB, 14 Preza, 18 Trek

 

The 3.6 is a power plant putting out STI like HP.

The 5 speed is reliable if it's been maintained.
Battery and grounds are just as important in a Subaru as a Toyota.

The rust depends on where you are. I have a 2001 VDC 3.0L that is rust free. It spent the first 10 years in Boston and the rest in TX. 245k miles and has a lot of original parts. (Can't count the things I changed supercharging it, but most of the interior electronics are original (I swapped out the McIntosh system when the head unit finally failed), - switches, control panel, blower motor and transistor, window regulators, seats, all the modules, sunroof still works, power mirrors are original, front wiper motor and assembly is original, the rear wiper just started blowing a fuse so I have to take it apart and fix it, steering rack is original, the rear diff went that mileage until I swapped in the R180 with the 6 speed, the rear axles I took out were still good when I swapped them with the manual swap.

The cooling fans lasted over 200k miles and the motors worked, but the plastic fan finally came apart from the motors. They did this 5k miles apart from each other.

I still have the original brake master cylinder, booster and all the calipers are original. I flush the system every 2 years. Thoroughly.

Maintenance is key to longevity. Keeping the car clean is also important. Inside and out.

Regular maintenance is not costly.

Spark plugs every 60k. Some have pushed it to 100k. It's a dual spark system that fires on compression and exhaust.

Synthetic oil and change it at 5-6k miles. Keep it full. 5W30

Clean the PCV and throttle every 25-35k.

Trans fluid should be drained and filled every 50k or so. Takes 5.5 - 6 qts of lineartronic cvtf2.

Diff oil changes at 35k intervals. 75W90 and front and rear together is less than 3 qts.

Coolant change and thermostat first 120k then every 80-100k as long as you use Subaru or high quality coolant.

No service for the timing chains. People have gone over 200k without touching it and 1 member on this forum took his 30D apart at over 250 and everything still looked like new. Chains measured out the same as the new ones.

 

Good write-up

 

Oh, and do not use Mobil1 in the engine.

 

+1
Not even once to win a bet.

 

My 2015 is at 169k miles and still runs great, and drives like new, to my amazement (no suspension or transmission work yet). I've been pretty good about maintenance but not sure if I'd want to ride it out for another 100k miles. Not unlike most vehicles at this age and mileage, likely a fair bit of cost would be incurred unless I went the DIY route. I've got a front timing cover weep - gaskets tend to start leaking on this engine, but generally no big deal. No clue what to expect for the high-torque TR690 CVT. Its not nearly as common as the TR580.

 

IMO, that 3.6 is a great engine. I've been driving these cars since my 1998 Legacy GT wagon. We traded our 16 Outback 3.6R in for an 18 3.6R when the 18 offered gray leather interior and Rear automatic braking.

I find the engine rarely needs to rev much above 2200rpm to get the car moving at a good pace. We have a 24XT and that 2.4 turbo spends more time near 2800+ to get the car moving up the same hill we drive when leaving the house.

 

I believe the 3.6R has more torque than the 2.4T up to about 2000 rpm. Which makes sense as the turbo needs to first spool up a bit before if adds power to the engine. Nonetheless its turbo lag is not nearly as bad as older turbos I've driven years ago.

 

The 3.6L is a tank.... will easily last 200K plus. They are even more fun with headers because you near current STI Power levels with headers and if you tune it, power output is 320hp, not bad for a something designed in the mid 2000's

just feed them good oil and change the coolant regularly. 203K miles on one of the very first 2010 outbacks here. I will keep it until the rust gets a hold of it.

 

Speaking of longevity. I'm at 137k and still running original thermostat. What is life of these? Not experiencing any issues at the moment but will be driving from Louisville to Las Cruces next month so I'm kinda getting nervous on these long hauls at this mileage.

 

It meets the specs, it's just not considered a particularly good synthetic, and it tends to result in higher oil consumption in boxer engines.

 

Ah yes...the oil wars!! ;-) I have nothing to refute this but I am also not aware of any scientific evidence to support it. If one reads long enough ya can find that every oil is the best and the worst. To me..none are perfect..but MANY will service your vehicle just fine and not cause the engine to blow up...not that that is the standard to go by. Have anecdotally have read more over the years in favor of Mobil1 than opposed. I generally stick to Mobil1 or Royal Purple. RP seems to make my boxers purr and I don't mean my shorts.

 

I don't anticipate any statistically valid data will ever be produced, so of course we're left with anecdote, but you can find a ton of threads on this and other Subaru forums where oil consumption was resolved by switching away from Mobil 1. Cardoc says he's seen plenty of evidence tying it to consumption himself. My 3.6 has been consuming significant amounts of oil for nearly 100k miles now and I can say for sure Mobil 1 is the worst (and I've tried most major synthetics).

 

Indeed. So is the Mobil1 "issue" with all boxers or just the 3.6??