[UPDATE: It's not a Ferrari!]
[UPDATE: It's not American. Or a McLaren]
[UPDATE: It's not an Audi R8, a Lamborghini, or an Aston Martin.]
[UPDATE: It's not a Toyota. I gave you another hint]
I modified the picture to make it "easier"
HINT: It's German, and they don't make them anymore.
HINT: Here's another picture, from the same area of the car, which is the rear:
HINT: And another picture:
I won't stop the hints until someone gets it right!