32, but I only passed my driving test 2 years ago today (weyhey, out of probation period)
Can never remember stopping distances (weren't on my real theory test), the distances for seeing the plate in front and I I didn't know about the arm bands on the bloke crossing question.
None so far (thank god!), on my third car already though:
1st car: L reg Ford Escort 1.6 - totalled when some kid smashed into the back of it at some roadworks.
2nd car: 52 reg Citroen C3 1.4 - Engine starting cutting out, got rid of it sharpish
3rd car: 05 reg Corsa 1.3CDTI - Much faster than the other 2 due to the common-rail injectors + turbo, it is also a lot lighter. Uses a lot less fuel.
I don't really speed though, especially when my kids are in the car.