The Dealership only when I can’t do it myself.
I only have one vehicle under warranty [a lease vehicle that I really don’t own].
Had ONLY one vehicle in entire life that had a warranty-—and I put over 444,000 on that vehicle. ALL others were private sales. Current ownership is 40+++ years of owning station wagon & 36 years of owning 1 ton 4 speed dually truck.
I do NOT recall ever going back to dealership for ANY service in over 30 years of ownership. Sometimes wish I still had that car.