FWIW my car has been more reliable out of warranty than when it was in warranty. I figure all the parts that were "defective" have already bit the dust and been replaced
In your case though your problems have been a bit more worrying and if it doesn't get any better I'd probably be looking at options to get out if they persist anymore. Its hard to call it; you could be totally fine after warranty or it could be bad news
You should talk to Brokenvert, he had TONS of problems while in warranty (thus his username) yet he still has his car last I checked.