Nothing really bad to say about them. Composition looks good, although the 2 wide shots in front of the fitness center don't really do anything for me, and on the 2nd shot I wish you got the whole wheel. You didn't cut off enough to make it look intentional, so it kinda just looks like a mistake. The exposures look good throughout. The only negative thing I can say is that you're use of vignetting is a little much. Overall I think your friend should be happy with the photos.
1: Composition looks good here. I would normally suggest to straighten horizon and vertical lines looking at it closer, the ground seems to slant upwards and not the car so thats ok. Theres a lot of distraction in the back but you seemed to put a shallow DOF to good use. Color balance looks great here.
2: I like it, just wish you didn't cut the wheel. There seems to be a color balance conflict as well with the coolness of the overcast the light from the building.
3. Try to match with warmth that you have in the first photo, seems too cool here.
4. The blown highlights on the car is a bit distracting and conflicts too much with the shadows on the rear hatch. In cases like this, a CPL would be useful and bringing out some shadows in post would do a lot to the photo.
The rest of the set looks pretty average but you made due for what you had to work with. Like I said just watch out for mismatching color balances and try to lighten up on the vignette next time. You're off to a great start. Keep it up.