I've posted this elsewhere with 'interesting' replies so I thought I'd try a more sensible group. ;-)
A neighbour called yesterday morning to say the driver's door on my '97 BMW 528 was open. As it was, and the car had been gone through and the change I keep in the box behind the handbrake gone - only about 5 quid or so used for parking meters etc.
This isn't the first time this has happened. Several times over the 10 years I've owned the car, and each time only this money stolen. So not a 'pro' who could get more for the spare wheel or whatever.
The difference is this time I am positive it was locked - I arrived home about 24.00 with a passenger, and after leaving the car he remembered he had a coat in the boot. I went to get it and only opened the boot using the remote, and checked it was locked after closing. (The remote system provided has a separate button for allowing access to the boot without unlocking the entire car)
So whoever it was had a means of opening the car without any signs being left.
The car is parked in the street, and this time near outside the same neighbour's house. He is pretty certain the alarm didn't go off as both he and his wife are light sleepers, and their bedroom at the front. With the window open.
On other occasions, I couldn't be 100% certain I'd locked the car. This time I was.
If the car was somehow unlocking itself, I'd expect to find it thus on a number of occasions. But the only times have been when it's been rifled through.