Hi all,
just for the info:
BMW M3 was the reference.
Nordschleife
M3: 8.22 min
S4: 8.29 min
Hockenheim:
M3: 1.16,3 min
S4: 1.19,1 min
S4 looses due to weak brakes and 1826 kg (a real sports car

)
0-200-0 km/h:
M3: 23,2s
S4: 26,4s
Conclusion:
Very nice engine! really good car without style, soul and ambition!!
PS. I have to admit it was the Avant
PPS. Nice family transporter and Autobahnstormer.
PPPs. It consumes 16,1 l/100km