I do recall the HST's had a few teething problems on introduction back in 1976, but I don't recall a frequent catalogue of more prominent problems that the 800/802 fleet have experienced, and very rarely a complete train failure such that happened in Bridgend today and Exeter a week or so ago. The pioneer run of the HST in service in October 1976 between Paddington and Bristol was fault free and even arrived a few minutes early. Compare that to 16th October last year when the 06:00 Bristol TM - Paddington pioneer 800 run made the headlines for arriving very late and giving some of its passengers an on board cold shower. In 40 years plus I have rode on HST's up to Edinburgh, down to Penzance and frequently to/from London and South Wales and I have never once been on one that failed completely (some did run with one power car, but I got to my destination). My second ride on an 800 at Swansea never left the station due to "an on-board electrical fault" - I never did find out exactly what the fault was as the staff or the fitters didn't seem to want to elaborate, but I had to wait another hour for a HST service which ran with no issues.

It goes to show, new is not always better and for the vast amount of money spent building this new fleet of trains, we should not be experiencing frequent problems that cause trains to go out of service.