You can get your hands on quiet a nice car for 5k.....firstly check craigslist, then kijiji.com ....both great sites for this stuff. Then don't get too hung up on age, your way better off buying a well maintained older vehicle, than a newer beater....I'll probably think of some more recommendations later on, but for now I've got:
-early 90's BMW 3-series
-Caddilac Catera
-Honda Accord
-Nissan Maxima/Altima
-older Benz(whichever you can find for 5k)
-Buick's(used buicks are dirt cheap, and reliable...great if you can live with the blue hair image)
-VW Jetta/Golf...not my personal favorite, but I had a company diesel jetta for a year, wasn't too bad.
-Chevy Lumina(also dirt cheap basic transport)
Theres many, many more...just look around, it's really not hard at all to find a decent car for 5k
Oh, almost forgot...check repodepo.ca there Ontario warehouse is here in Toronto...Once you sign up on their website you can see the "suggested price"...but when u actually go to bid on the vehicles(best to do so in person) you cna usually knock at least a grand or two of the price, if not more....Just keep in mind that no repo cars are certified or e-tested....but you can get some real good deals there.