I once put my old E36 BMW back together in the parking lot outside of my apartment following a front-end crash.

I'd have probably been more comfortable in a garage, wherein: I could leave things as they sat and would know that they'd be exactly where I left them when returning the next day.

But I didn't have a garage nearby that I could use. I kept the area clean and picked up all of my tools and detritus if I went in even for as much as a sandwich, and worked as expediently as my time would allow as I puzzled out this new-to-me problem of "bodywork."

I didn't get hear any complaints. The owner of the place would stop sometimes on his way through to make sure I was doing OK and would ask if I needed anything, and soon enough the car was put together better than it ever was on my watch.

When I rented a room, I did my auto maintenance on the curb. Now that I have a home, I still do that because I don't want oil stains on my driveway.

I get that some people don't have space for an oil pan, but tons do. Brake pad replacement doesn't require anything besides the jack from your car and a socket wrench.

Many localities have co-op community workshops where you can use their space to work on your car. They may even have a lift, common tools you can use, and someone there who might know enough about car repair to help you. Or not, but check into it.

I don't have a garage.