Both my 2020 VW Jetta 1.4 and my 2021 Mazda 3 Skyactive 2.5 (non turbo) both call for 40,000 spark plug changes. I'll assume the factory plugs are iridium. Even my old 1999 F-150 used double platinum plugs that I believe were 100,000 mile plugs.
Not that I mind doing the maintenance, but what's with the lowered interval?
Not that I mind doing the maintenance, but what's with the lowered interval?