We have a 2011 Enclave purchased new (less than 10 miles) and I can't recommend this platform. It has many known issues and imho they are not unexpected they are in fact consistent. We wanted it because of the huge discounts and extremely large cargo (more than a new Grand Wagoneer). If I'm not mistaken only the current Tahoe is going to have more cargo (122 v. 115). I was thinking in a non inspection state maybe pick one up, drive it into the ground, and toss it. Let me give a hint. With most vehicles, one troubleshoots a P0420. On this, the CATS and 02s are replaced, which one is determined via 020 or 030. The CATs are $2,100 a piece. Why knowingly go into it if this is a "known" issue?
Why not get an extended warranty? Ah, grasshopper, because as designed, everything continues to break after it expires lol
Told my wife, when we get a Tahoe/Escalade, I'm keeping it, rather than to accept the $1800 trade in lol She's ok with it. She actually likes the vehicle. It's comfortable although uses a lot of fuel and underpowered. But she's riding on Bilstein B6's as well. Only get this vehicle if the price is disposable, like $4,000, etc. Then, it's utility. It's the opposite of buying a 10 y.o. LS430 9 years ago. That's a set it and forget it type of vehicle that just won't break.
my 02
p.s. why we got it....it actually is nice looking to this day. I don't have ugly cars in the stable, seriously. I find brand new BMWs and Audis (shocking really) to be UGLY. Also wanted HID xenon and direct injection (this was 2011). The following and current generations of this vehicle are imho Pilot sized, much smaller. And they were giving them away, huge discounts.
edit p.p.s. at 13.5 yo, the exhaust system is starting to go from corrosion. The exhaust is one piece from the CAT back--pipe, muffler, y-pipe, 2 resonators, and that's almost $1700 for the part alone. For those who have a solid credit card, like 1980's dealer service, and repairs in the 4 figure range upon each visit, this is the car for you! DIY isn't that fun, I did the water pump myself, there was an excellent tutorial by some guy Sustained Living Dad, saved me hours he said promise you can take it out from below. Other YouTubes guys are randomly removing the electrical box and top strut, really nuts lol Yes, water pump, steering rack, power steering pump, all known issues as well