Hi all. Regularly use my A3, yesterday went to start and everything was completely stone dead... I hooked up jump leads, and it managed to start but did not run properly at all. Revs went up and down a few times then the engine died.
I put the battery on charge for a day. It started and ran fine. Went to use it the following day and its dead again.
I fitted a new battery a few months ago, from one of these online retailers. Is that likely to be the problem or something else i should check for?