I'm a bit worried about my car

I've been driving the same vehicle for two years now. The vehicle itself is maybe 4 years. I don't think it's been seriously serviced during its lifespan. The brakes are worn down, since dad liked driving aggressively through heavy Houston traffic. They've been squeaking for two years now (since I've had it). It's probably never had a tune-up or engine flush. Whenever I mention it to him, he tells me, "Oh, it's fine. You'll live. The brakes will last a bit longer." Lately, the wheels have been riding kind of low, I'm lacking air pressure in my tires. It's a SUV, and I'm a little girl. With my luck, I'll end up blowing up the tires.

At least I'm the one driving the vehicle, not him. With his aggressive driving, cars hardly have a lifespan of 5 years without something serious happening to the engine, etc. We went through 2 dodge caravans within less than 3 years around when I was 14-17. Mom just totaled the new car. It's not really totaled. It's just never coming back to life again. We seem to have bad luck with cars.

I see this trend of my dad liking gas guzzlers. My mini-suv hardly gets 20 miles to the gallon, mom's dead Daewood guzzled like a Toyota Camry, and dad's 8-cylinder Montana. Geez, I don't even want to know what he's paying at the pumps these days.

When I'm earning my own living (between that time and when I actually settle down), I'm going to lease instead of buy. It just seems like too much trouble to maintain...with all the servicing just so it can operate optimally.