Thanks for the help and advice found on here, in the end I purchased a pretty mint Black RS4 Avant last month.
Unfortunately some scum liked it as much as I did, and 5 weeks after taking delivery my house was burgled and the RS nicked.


Would love to replace it as I was only just breaking her in, but do I risk it again? Maybe not, its a shame as it was an awesome car.
If anyone gets offered a low mileage car for silly money, check it thoroughly first!