Car maintenance? What's that? LOL
In all seriousness, we don't really do much routine maintenance. We mainly fix things as they break. Our main car is a 2000 and our truck is a 1992. Old old old. I normally take the car in for stuff because I know the people at the VW repair shop more than him. So I guess we sort of do our own vehicles, although we both drive the car more than the truck. He did replace the car battery last week though.
If it is something bigger than an oil change, me. I usually try to fix it myself first, I have changed many sensors, a radiator, a couple alternators. And if it has to go to the shop, I usually take it.
Although I probably vacuum it out more often than he does We are a 1 vehicle family, so I drive it more than him - he uses public transit. So it's mostly the kids and I making messes!
We dRive older cars too. A 2002 and a 1995. I just don't have any desire to have a car payment. Jon does everything himself unless its too complicated and then he gets his mechanic friend to help. Usually his friend only charges us like $50 for every $300 a shop would charge in labor so it saves us a ton. But Jon does oil changes, brakes, starters, alternators and a ton of other stuff himself. He's really good at staying on top of it all which is why my 2002 Taurus with 160,000 miles on it still runs like it's brand new!