I have a Golf GT that is less than two years old. On two separate occasions, several weeks apart, it has been completely dead on Monday morning after being parked up without use over the weekend. I have had to gain entry using the turn key and jump start the battery.

My franchised Volkswagen dealer checked the car on each occasion, including keeping it for a week, with no conclusion. The battery appears to be fine and all systems are shutting down with no apparent electrical leakage. I am now living on tenterhooks awaiting the next failure. I commute every day so the car gets good usage. Have you heard of this before?