Dont, but think I should but had a prob a few years ago.
Carried a fire extinuisher it the car at the time, but was not fixed to anything just rolling about either in a footwell or the boot.
When the time came to use it, it was as much use as a salt shaker as the powder didn't deploy and would only come out like shaking salt.
Luckily the missus was in a moterway service station at the time next to a very helpfull A man who had a working extinguisher.
So not only do you need to carry one, tha is in date but securily mounted as well.
Trev

















