For auto repairs, sure. But it’s very easy to find woodshops or electronics shops in urban areas to DIY whatever you want. My father and my son used a park district wood shop in Chicago to build a sailboat over the course of a winter, and it was no problem to store it in the shop as it was being built.
On the subject of cars, though, once you get into the mid rise and high rise buildings, you’ve got the special lifts designed to fit into a parking space. People use them to park two cars in a single spot, though perhaps not SUVs. My neighbor had one installed so he could park two Lambos in his one space. It’s very easy to get condo board approval to have one installed. Once it’s there I’m sure you could surreptitiously change your oil or do minor repairs.
Also, there are electrically-powered oil extraction pumps designed to suck old oil out of the top of an engine. Depending on the filter location, you can avoid any need for a lift and can cleanly take care of it in just moments.
That's not everyone, of course, but it's far more common in tech than HVAC for instance.
My dad worked as an agriculture teacher for 30 years. He's now retired, and has a 40x120 shop building on his property that I have access to whenever I need it. As a result, I drive a 35-year-old GMC pickup. Before that, I had a 25-year-old Jeep that I'd driven since ~2012.
Even with the necessary skills, I had a very difficult time performing basic maintenance on my Jeep when I lived in a city. My apartment complex didn't even allow oil changes on the property, and there were no garages around that I could rent space from. I ended up doing a lot of stuff in the parking lot of the auto parts store near me - from oil changes to replacing the entire rear axle at one point. The police were called on me from passers-by multiple times, to the point that they knew me by name. Bear in mind, that's with the permission of the shop.
In short, urban America is fairly hostile to DIY.