TBH most of those pictures are suffering from...
.. not being arsed to get down to the level of the car
.. horrible overcast british grey'ness
.. not very highly saturated pictures, lacking in colour, suggest changing th whitebalance on your camera to every shot (usually just shove it in custom, fire teh shutter at whatever you are shooting, let it do the leg work, OK set it, then use it, reset for next shot if colours/conditions are wildly different).
whitebalance on Dslr's is the be all and end all. get it wrong, and your pictures might as well be off a phone
and composition, just pointing and clicking works alright on point and shoot cam's, but your not really making the best of what you've got there.