Ive noticed that many new car owners are excited when they first get their vehicle, but maintenance is often where small mistakes turn into expensive problems later. In my experience, the most common mistake is skipping or delaying basic maintenance like oil changes, transmission fluid checks, and tire rotation. People usually wait until something feels wrong, but by then the damage may already be done.

Another big one is ignoring warning lights. Some drivers keep using the car even when the check engine light is on, thinking its minor. Sometimes it is, but sometimes its the early sign of a bigger issue that could have been cheap to fix early.

This is especially important if you own a Japanese used car, because these cars are very reliable, but only if you follow proper maintenance schedules. I was actually reading a maintenance checklist on a site called Nobuko Japan that explained service intervals in a very simple way, which was helpful for beginners.

What do you think is the biggest mistake new car owners make? Would love to hear your experiences.