US vs UK driving testWatch
I've not heard of a hard driving test in the US. You can also take your test in an automatic, without your license being limited to them. In California, you can get your provisional license at 15 1/2, and your full at 16 (some age-related restrictions).
I think it's well known where US drivers who move to the UK, have a hard time getting their licence. The theory and practical is harder supposedly. Plus the UK is a lot more stricter surrounding speeding and other offences
The test for the UK is proven to be one of the hardest but safest for teaching drivers, as the UK is one of the safest countries in the world for accidents with fatalities. Plus UK roads are busier, smaller and narrower than US roads, which makes them more dangerous when driving. Plus in the UK, you have speed cameras on most roads, which makes roads safer as people are likely to speed less.