Extended / 'long life' official oil service intervals. That's a whole different subject in itself..
Indeed it is. I have just sold my Mondeo which was serviced every 12k on the dot. The turbo was starting to whine when I sold it.
Now I cannot see how a manufacturer would say 20k is OK for a car to go between oil changes if it knew it wasn't? The bad press would be monumental.
Hyundai state 20k for the i40 and give a 5 yr unlimited mileage warranty so they must have some faith. The sales guy in Cardiff Audi told me quite categorically that I should have my car switched to long life servicing ASAP as I do 20k+ P/A.
Would they do that knowing it will eventually FUBAR the engine?