2019 Audi S4 TDI revealed

Audi has taken the diesel engine from the S5, S6 and S7 TDI and slotted it into its more practical S4 and S4 Avant, creating the S4 TDI in the process. As with its two-door brother, the S4 TDI is powered by a 3.0-litre V6 TDI engine making use of an electrically-powered compressor. It pumps out 255kW and 700Nm, the latter on tap between 2500rpm and 3100rpm.