Hi all,

Like a few others I've been an MoT tester for more than 30 years, heck there really was a Ministry of Transport back then.
In all honesty, it's extremely rare nowadays to see a vehicle that actually has defects likely to cause loss of control. We used to routinely go out and collect Triumph Heralds, etc., with collapsed front suspension.Complete brake failure wasn't unusual in the days before dual cicuit master cylinders and plastic coated pipes.
The test has shortcomings, the tyre tread regulations are too lax and there are some defects that may not be easily detected due to the way the vehicles are constructed.
Cars are becoming more reliable and maintenance free with every passing year. Even emissions failures aren't as common as everyone thought they were going to be. Once 100,000 miles on a car was starship mileage, now it's commonplace.
I reckon the test interval will definitely be extended at some point in the future.

Tom W