Just a few of my car
1.
DSC_0013 by
mshipman89, on Flickr
They're decent shots, I agree they're all underexposed by a good amount, I don't mind a little underexposure depending on the setting/subject/etc, but I think its just a bit too much on these. the white balance seems to be off in most all of them as well. I don't mind the lens distortion on some of them, though it is quite extreme (when the others are talking about 'warp' they're referring to the wide angle lens distortion, not that you've actually 'warped' the image or something like that). I also think your composition could be improved in some of them as well, for example, #1 has lots of space to the left, where the car is facing to the right, and there really isn't anything fantastically interesting to the left. I think repositioning the shot so that you have more empty space to the right of the car gives the feeling that the vehicle has somewhere to 'go' since that is how it is facing.
you've got the 'My photos are OK to edit' in your postbit, so I hope you don't mind I did a quick edit on #1...its not great and you would be able to get much better results starting from a raw file, or better yet, reshooting...but here's a quick change that: 1) increases exposure overall (though its tough starting with a jpeg, so this exposure still isn't spot on), 2) reduces a little bit of the lens distortion and straightens horizon, 3) crops a bit for composition (though a reshoot could get better composition than this even, we're kind of limited due to the front bumper being so close to the right image edge), 4)some color adjustment, 5) attempt to separate the subject from the background with some selective exposure editing and curves (dodge the car and some foreground highlights, burn the background highlights, and some slight exposure gamma and offset adjustment), I tried to get the sky to feel less 'blah' but its kindof stuck like that, a reshoot on a better day would help out immensely.
you might also look into a good circular polarizer, you could get some more 'feeling' in the car by reducing the glare and reflections on the glass/surface of the car that way.
overall they're not terrible or anything, but just some C&C to think about on your next shoot.
Thanks for sharing them