Rossk26, get the £5k Audi.
But please come back in 12 months and tell us how it is holding up.
That should settle the argument.
Personally, If you want to release money into your house and have another car then buy Japanese, job done.
But all these mud slinging and wild assumptions that you might get lucky with a reliable old car are just that, assumptions.
Go sell the focus for £10k, and prove us wrong that you can get £10k for it, and then prove us wrong that a 8 years old Audi is bullet proof.
P.s. my dad's 51 plate A6(60k miles on the clock) threw up a £890 bill a few months back, it's not the engine, something to do with the steering and a few other bits.
Food for thought eh?