If you buy a car and don't check stuff like your fluids regularly then you're the idiot. We're not talking about a half million dollar supercar, it's a tarted up taxi. Let me guess, if it has an issue, runs out of oil and lunches itself you'd consider it a defect that the engine lunched (instead of you being the dickhead that drove it until it lunched).
People like you shouldn't own cars, go back to walking.