Advise and Recommendations

Hi All

My wife has been pestering me for an A5 for sometime now and since my Freelander 2 has just been sold I'm thinking of buying one. I'm looking for 2010 - 2012 S Line and hoping to spend no more than 13K.

Can you advise me what I should be on the look out for? Are there any questions I need to be asking and models I should be avoiding?

As a reference this is the kind of thing I'm looking at

Audi A5 2.0 SPORTBACK TFSI S LINE 5d 178 BHP

Any advise / help would be really appreciated. I've jumped in half cocked on a few cars before and regretted it so just want to make sure I reduce the risk as much as you can with second hand motors

Thanks

Craig