As part of Main dealer standars only 4th year apprentice can do a first service and at that the service manager has to sign off on all his work.
You get a qualified technician, who checks lights/ levels, greese door locks, check suspension, engine , gearbox, windows, boot, spare wheel, adj, tyre pressure, checks brakes, coolant boiling point etc and the list goes on. If you get you car back from "fred in the shed" and it only takes a half an hour, do you think he has done everything?
We get more repair work out of people who get private Technicians to do there service than we do from the cars we service. Fact is there not done to dealer standars. Even a Technician who has left a main dealer after only one year is not up to date with the systems and practises we use every day.
One a week I get new service update's for M.B, for better maintained cars for our customers that stay in the dealer network. If your not in it you wont know and when a problem arises you suffer.
It does take 30 mins to do an oil change, the rest is preventive maintaince, tightning and adjusting etc. How do you do something correct if you don't have a ramp or a cumputer to tell if you had a minor elec fault that the light flashed on and off and you thought nothing of it, but when we service it, it's stored.
I simply do not believe any of this. Sorry. Technicians me eye. They are mechanics. My experience of all marques is that preventative maintenance is laughable. Problems are solved as they occur. The workshop manual may list procedure after procedure, but this is Ireland.
Not 1 of them in the country is worth €150 per hour either.