10 - 12k diesel car ideas

Hi All

I have just gotten a job that requires me to travel 80 - 120 miles every week day. I am looking for a diesel car that is reliable and economic as my top priorities, i would like it to be spacious enough like a VW Passat or Jetta but even the Ford Focus looks good. I would be willing to travel to the UK but I,d rather buy here if possible but cant go over my budget of 10-12k.

So any ideas are welcome please, the last time I posted on here with help looking for a car I found it a major help and even helped make up my mind.

Thanks