Just came back from local garage (Aston Martin workshop) I know the manager he put it on his machine no fault codes found strange .I started the car up for her she was running late ,I think she stalled and panicked, car was in the middle of a junction turning right .I tried to start it no joy it was just turning only warning sign was oil level low top up .Topped it up mind you car was facing down hill a fair bit once oil level was on the mark it started ,Peter the manager at the workshop stated he has come across a couple of Audi that have the sensor to stop car starting if really low on oil , so it's drive with care and watch oil level other than that it a beautiful car