I bought a 2008 Audi A4 2.0T Premium S-Line Special Edition yesterday and I am very happy. 87k miles. This car is all I have ever wanted.

Yesterday I drove it just a couple of miles from work to home. I parked it in my garage underground (I live in California so it is not very cold).
When I went there to go to work this morning the car would not start. It would make a constant sound trying to start (so I guess no battery issue) but it would not start. It would keep making the starting sound but not starting. Tried three times and then it started. Left the car running for 10 minutes and then turned it off and it started right away. I drove it for 2 miles to go to work and upon arrival to the office, i turned it off and back on and the car turned on fine.

Any ideas? There is fuel, oil and no check-engine light on.

Please help!

Thanks!