Dreams about driving can often symbolize control over your life and direction. In your dream, the BMW represents luxury, success, and a desire for high performance. However, the fact that the car wouldn't start might indicate feelings of frustration or obstacles you're facing in achieving your goals. The battery being the issue could suggest a lack of energy or motivation in your waking life, or perhaps you feel unprepared for a situation.

The parking garage may symbolize a place of potential or storage of your ambitions, but being unable to start the car implies you might be feeling stuck or unable to move forward. This could reflect feelings of being overwhelmed or unsure about the next steps to take.

Consider reflecting on areas in your life where you feel blocked or where you lack energy. It might be beneficial to evaluate what changes you can make to recharge your motivation and drive.