I went to start my car today, about 24 hours since I last drove it. It started straight away but then spluttered and stalled. Then wouldn't start after three attempts and sounded like the battery was about to die. I waited a minute and finally it started but with a load of smoke coming from the exhaust. This then cleared and it seems fine. This is the second time it's happened within a couple of weeks. Any ideas?
I've only had the car a month, it's on a 56 plate with a full Audi history. I wonder if the battery needs replacing? I've just had the DPF removed and the car remapped at the same time but don't know if this has any bearing on it?
Any thoughts much appreciated.