When my BYD gave me a service message after 2 years of driving it and I duly booked the service appointment, I got a friendly call back from them explaining that BYD had revised their policy based on their experiences servicing and that I had another year (or 10.000km) left before scheduled maintenance needed to occur.
I can't recall any dealership ever making such a call before, I'm sure most of them would've gladly pocketed the cash.