Its really late so this will be short and sweet :)
Composition - I'd have shown more of the car. It's hard to tell if its he front or the back of the car. I'm assuming its the back though from the water drops coming up from the left of the tire. Too much ground, not enough car.
Technical - Exposure looks pretty good aside from being a little flat. I don't know how much drama or emotion you can put in a picture like this.
Overall - Not a poorly taken pic, but the composition really lacks the necessary framing to make this shot as effective as it could be. Good luck in future stuff....blah blah blah -Inspzil
Nice capture of the rain and shiny black paint. I like your subtle BMW tire, the only clue as to what this is. I generally didn't like the "partial car" shots but this one I do. Nice composition.
I like the rain splatters behind the car and the black against the pebble paving. Your BMW hubcap should be more central to the composition (see rule of thirds) Crop on the left to work better with the tail light (right now the cut is at an odd angle with the light)
Is that water? BMW *is* the ultimate driving machine, but this shot doesn't do this automobile justice. Would have liked to see an action shot with motion and "stuff" - 4