I have an S5 TDI from 2020. Honestly , no lag if you put it in sport or dynamic, it . It rips from 1000 rpm. Also, compared to the A6 TDI 3L I had, I don’t find it any rougher. A bit more rumbly when cold but when it’s warmed up, it’s very smooth. It’s got 16K miles on it ,
admittedly If it’s...