Define the word 'agressive' more specific.
Is it agressive concerning the mean look? Then the headlights would be key.
Or do you mean agressive concerning the design? Like bumpers, grills etc.
Or both....
Anyway my choices:
The previous generation Audi RS4 and of course also the current RS4.
The bumper and the grills, fabulous. Even though the headlights look friendly but the bumper and the grill makes it look agressive in my opinion.
The previous generation BMW 7-series, facelifted.
The headlights and the low hood makes the car look mean.
The previous generation BMW M5, facelifted. And also the current M5.
The BMW M3, CSL especially.
Mercedes SLK
The design is agressive with AMG package in my opinion.
Mercedes SLR
I put a side view picture of the SLR here below on purpose, aside of that everyone here knows how the SLR looks like at the front, this picture shows how pointy the front is of the car. Fantastic in my opinion.
Mercedes S65 AMG
Mercedes CLS55 AMG
Mercedes CLK DTM
The bumper and the wideness of the car makes it agressive.
This topic would be much easier if it's about the overall agressive design of the cars and aside of that not only limited on German brands and on the frontview.
Because of the limitations, the choices narrow too much down to the RS4 and the M5.......basically on the BIG 3 German brands. Which in my opinion is too fanboy-ish if you know what I mean, no offense.
There're many other beautiful brands who has agressive front as well, like the Nissan skyline R34, the Lamborghini's, Dodge vipers, TVR Sagaris only to name a few.
Or even maybe brands that we don't know much about.
That would give this thread a greater value.