As was said, you control the camera, or perhaps you don't. Some cameras do not have anything but auto mode.
What you do control, no matter what camera you have, is the scene. This can be quite difficult to do, but that difficulty is only in your own remembering to pay attention.
When you take a photo of something, the car photo for example, your own focus is on the car. For someone not into the intricacies of photography, it is easy to focus on the subject and forget about everything else that will end up in the scene. As has been pointed out, the electric wires, the trees, the centering of the car (something that no one really thinks about until they start to research more about photography), and the location of the light (the sun in this example) are all things that you can control.
Next time, pay attention to what is behind your subject and what will be showing in the final image (the wires and trees). Position yourself/camera better to remove or hide those items from the image.
Position your subject/camera so that the light is behind you falling onto and lighting your subject (the sun). Imagine the car flipped 180 degrees and you positioning your camera to get the same angled shot that you have posted except for shooting the left front corner instead of the right front corner. Now the sun would have been more towards your back lighting the front of the car and you would have a much better lighted photo.
As for the centering of the car, to make it a bit more pleasing to the eye of the viewer, you generally do not want to center the subject. If you would have positioned the car more to the left, the empty space to the right of the car would leave room for the car to "move" towards in the image. Kind of difficult for me to explain. Think of a bird in flight and you want to take a photo of it. You want to leave space in the photo for the bird to fly towards to give the image some sense of motion, if that makes any sense to you.
Small tip with photographing a stationary car, turn the front wheels instead of leaving them straight like in that image. If you would have turned the wheels towards the left (car's left) it would be more pleasing to the eye in a shot such as this.