This is my thought, dont need to drive car till friday so if low then my guess will be the battery as off the car was holding charge ( 2 days once fully charged). Been racking my brains tho ( dont take to long ..LOL) Had the car 2-3 weeks now, battery was fine for 2 weeks and the only thing electrical i have done is rear fog lamp bulbs and the boot lid bulb ( which was missing) but dont have ski flap so cant tell wether switching off, also as i said i had driven about 20 miles since getting it and had been valeting the car, playing around with TV/ Stereo etc so hoping just drained the battery but time will tell...did notice tho, the car has what looks like a new Exide Battery 95ah... it has a magic eye which when green is ok , Black is recharge, white is replace.. when got car it was green , when died it was black so recharged but the the eye is still black..so maybe could be knackered, if dies again will take to my uncles motor spares shop and get tested, also get charging system checked.... watch this space..LOL