I just love the way people buy new-ish cars and assume they'll be more reliable than old wrecks like mine
Sure, while they're under warranty it's okay... If you don't mind not having your car half the time.
You see, it wouldn't be worth spending £800 on my car, even once, 'cause it isn't worth that itself... Then again, it's probably cost me £120 outside insurance, tax, etc, this year. Not too bad.
£800 will buy you a nice, roadworthy Laguna dTi, so why bother with your modern rubbish?