That's a moderate "Italian" tune-up - it does any car good.

It's important to do the same with any modern turbo engine to give the variable geometry turbo vanes some exercise otherwise they'll seize up.

Agreed - it was absolutely necessary with my many 2-stroke bikes, and good for 4-stroke engines too. Carbon deposits do build up, and working the engine hard does help remove them from injector nozzles, piston crowns and ring grooves, and exhaust valves & ports, etc.

My recently bought Suzuki had averaged 5600 miles a year since it was made in 2009. I've been up and down the A303 in a "put your foot to the floor and leave it there" fashion, and it's absolutely running smoother, and feels much more 'willing'

For such cheap transport they fell very well made ours is averaging 40 mpg over mixed driving mostly town with a 1.5 mile section of 50 mph fuel carriage way on my commute.

Mother in Law had a Mk2 Escort which never ran quite right, she had it back to the dealer and it was still no better. Some while later she needed to go to Yorkshire and would I dive her there. We got from Manchester to Leeds coughing and hesitating, then on a dual carriageway it gave an almighty cough, emitted a huge cloud of black smoke and ran perfectly afterwards. Sort of a Yorkshire tune up rather than Italian but did the same job!

Not a good idea to use any hand held device while the engine is running. Assuming that you are in control of the vehicle. If you were on your driveway then ok .