ok so...The S4 is now diesel, as is the S5, S6 & S7! So.... is the S3 next? Are you worried? Would you buy a new S3? Are you going to buy a current FL S3 as you are worried the new S3 will be diesel? Will the current S3 become a classic as it "could" be the last of the line petrol S3? So many questions!!!
https://www.topgear.com/car-news/audi-s4-now-diesel-car-too
https://www.topgear.com/car-news/audi-s4-now-diesel-car-too