Good luck on your survey.

Just a comment, you may want to improve the grammar of your questions. I'm not sure if your thesis adviser minds, but as part of your thesis, you might want to be more meticulous about it.

Also, what's the relation of being a car enthusiast to owning a car and all the hassle associated with its maintenance? Even people who aren't passionate about cars can still own cars and will still have to deal with a car's wear and tear.

If they're not connected, then remove the "If so," phrase from the question.

Regarding your categorization of household income, you might want to revise your numbers. Do you seriously think that people who belong to households with a total income of less than 10k would own cars?

I'm not trying to bash you, it's just that there are a lot of things you can improve on with this survey of yours.