I'm not sure if that's true for Ford, but this is in the owner's manual for the Nissan GT-R.
> OBTAINING WARRANTY SERVICE
> You must take the vehicle to an authorized Nissan GT-R Certified dealer in the United States or Canada during regular business hours at your expense in order to obtain warranty service.
> WHAT IS NOT COVERED
> Repairs performed by anyone other than a Nissan GT-R certified dealer.
See the section titled "OBTAINING WARRANTY SERVICE" on page 11 and "GENERAL EXCLUSIONS" on page 12. https://www.nissanusa.com/content/dam/Nissan/us/manuals-and-...
> Repairs performed by anyone other than a Nissan GT-R certified dealer.
IANAL, but I don't think that clause is legal in the US. Any equipment originally covered by a warranty and still within the time/mileage limits of the warranty must still be covered unless Nissan can prove that the work done by an outside tech was the cause of failure.
I don't get it. "Required" by whom?
Just say no, negotiate a better price, or take the car elsewhere.
>Getting the repair done by the dealer gets you a warranty by the manufacturer, which is the only additional value that I see.
No, the warranty exists regardless of where the car is serviced.