Don’t even buy a stupid car – look at your specific purposes and consider if it is the best, most efficient choice for what you’re using it for. Buy for what you will use it for most, not what you will use it for occassionally.
Only drive when you need to drive. Most driving is unnecessary. Ride a bike instead with a carrier on the back.
Drive like an adult not a teenager. Don’t race it or bully it, drive very smoothly and don’t take it out in tough conditions like icy etc. When it gets icy, put on more expensive winter wheels for the job.
Do the small maintainance yourself – changing tires, oil etc.
Made small car improvements myself to look after the car and keep it on good form. Including battery maintainance etc.