Is the house only for you? Or do you mean that your car having a nice sunny spot is more important? I don’t want to burst your illusions, but I think your car is blind and doesn’t appreciate the sunlight. But I would probably have more success if I claimed that so much sun is not good for the car in the garage. It heats up completely and then the upholstery gets damaged. ... Convinced? Still not? I give up!
These are not huge plots and the neighbors are not far away. A bit of privacy is important to me. I would give that up if I positioned a large window on the southwest side. The neighbor could then look into my living room from his terrace, dining area, kitchen. At least the shed on the right side would have to move to the east. Better move the garage as well because that way both sides of the plot would be built up. I build about 45cm away from the property line, if the neighbor on the left builds his garage to the west and right on the property line, we have a narrow area that is hard to access.
If I have learned one thing from all the floor plans, if you want something additional you have to give up something else. It’s always a question of priorities.