In over 50 years of driving - and most of it on older higher mileage vehicles, I've never been left standed and only had 3 let me down that I couldn't drive them home. One left my daughter on the side of the road, and she even managed to get it off the 401 onto a secondary road.
On those little Limey psiscutters it's not as bad as on an American beast - where you loose the power steering and power brakes when you lose the engine. But then they are a lot more dependable than the Limey Pisscutters - even if not as dependable as the Japanese stuff.