To the OP - you came to the right place!! The irrational hatred of Subaru's on this forum should be considered legendary. I feel pretty qualified to say this because since I have frequented this forum, I have owned 3 Subaru's, only 1 was a DD, and 4 VW's, all of which have been DD's. So I have had the most hated brands on this forum.
97 Outback - the infamous EJ25D - sold it with over 415k kms (260k miles) and I kept seeing it around town for a while. Bought for $500, sold for $1000, so I could buy the WRX. Absolutely beat on that car. It was my ride when I volunteered at rallies and I Rally-crossed it. Drove it to and from Rally-X, 3.5 hours each way. Had to drive it home one time with the complete exhaust downstream of the 1st cat in the back. Never failed me.
02 WRX - early build - Bought from a good friend for $750 and sold for $3K. I DD'd the WRX. That car was absolutely magic in the snow. Rear LSD and the mechanical centre diff (locked 50/50), rear 20mm bar and a set of snow tires. Steer with the throttle. It was tuned with a Cobb AP using the OTS tunes. Full SS Lachute performance Exhaust, including catless up and downpipe and a single cat. Sold because my now ex-wife hated it and it was hard on fuel, premium at that. (In Canada we routinely pay 20 cents per litre extra for 91, that's the equivalent of 80 cents per US gallon.)
05 WRX wagon - bought for $500 with a pooched motor (OP ran it until the timing belt snapped!) and then a parts car for $500. The good heart into the good body. Realized that I could sell off the WRX and buy a built Rally Car. Sold the car for $6500 and sold $2100 worth of parts from the parts car.
Yes Subaru's have their quirk's and most of them are easily fixed by the average enthusiast.
Not Fixable:
- They aren't Honda's or Toyota's. You can't just treat them like an appliance.
- Gas Mileage is awful.
Fixable:
N/A - Head Gaskets - go like clockwork at 150-160k kms (100k miles), but they normally give plenty of warning. See those drops of coolant on the driveway, don't ignore them. Check your fluid levels regularly and when the time comes put the MLS HG's from the turbos in the NA 2.5L and never touch them again, if they are done right.
Turbo - Cats - damn cars have 3 or 4 of them. 1 in the up-pipe, 1 in the downpipe and 1 or 2 in the main exhaust. Get rid of them all except 1 in the main. This will require a tune.
Tune - Every turbo Subaru requires a tune. The factory tunes are terrible because they were chasing fuel mileage and emissions. They are so lean that even stock they will fail. The nature of the intake and exhaust on the flat 4 is believed to cause flow issues and many believe is the cause of the #4 cyl ringland issues. Get a pro-tune or a Cobb OTS.
Mods - part of the problem with many turbo Subaru's is that they have become the replacement for DSM's. Many have been bought by 20-year-olds, modded with no tune and absolutely beat on. Then they put them back to stock, sell them and run with the cash. A month later boom! You cannot play around with the intake or exhaust on a turbo Subaru without a tune. PERIOD!
Track - Long sweeping left handers leave the oil intake on both STi's and WRX's sucking air - bye-bye bearings. Need aftermarket oil pickup and even then maybe iffy.
Turbo Legacy, Forester and 2.5 WRX- the EJ255 had screens put in the turbo oil lines. They clog and starve the turbo, pull them.
Transmissions - 4EAT and 5EAT auto's are considered near bulletproof. 6spd manuals like wise. The 5spd manual is the one that fails. They aren't made of glass. If you know how to use a gearbox and you don't drive like a highschool kid with their first fast car, they are fine. They will NOT handle motorsport use.
As I said, most of these fixes are within the realm of an enthusiast to manage, except maybe a gearbox swap. That's pushing it for a lot of people.
Like VW's there are certain Subaru's I avoid, STi's - all of them. The EJ25 (specifically the EJ257), is a design that is over 30 years old and in the STi, is really at the limit of its design and development. Plus everybody wants a bit more out of them and boom. Everywhere except N. America, Subaru does not use a turbo 2.5L. They use 2L ones.
I am also leery of the 06-07 2.5L WRX - combination of the weaker 5spd, plus the 2.5L turbo motor. However the EJ255 is simply not pushed as hard as the STi engine and therefore they seem to be slightly better. The Legacy's, Outbacks, Forester's and Baja's all share this drivetrain. They don't seem to have as many issues, maybe because they are driven and cared for differently?
I'm not that knowledgeable about the 08-14 platforms never had one and not many people I know have had one either.
New WRX's have moved on to the FA20 and the 6spd manual. The FA gets much better mileage and lose the weak 5spd. I know a few people with them and they love them. Sti's still use the EJ25, so they are a no from me.
Buy the right Subaru, take care of it and it will take care of you. Buy the wrong one, treat it like an appliance and you better get a bus pass.