Reaching 300,000 miles depends on disciplined maintenance: change fluids on schedule, fix small faults early, drive smoothly, and protect the engine from heat and neglect.

Beginner car maintenance starts with simple habits: check oil, tire pressure, lights, brakes, wipers, and fluid levels monthly to improve safety, reliability, and repair costs.

Engine, transmission, and hybrid battery repairs can cost thousands. Prevent them with timely fluid changes, diagnostics, cooling-system checks, and prompt attention to warning lights.

Oil change intervals vary: most modern engines can go 5,000-10,000 miles, but towing, short trips, extreme heat, or turbo engines may require more frequent service.

Warning signs: slow engine cranking, dim headlights, clicking on start, dashboard battery light, or corroded terminals. Test the battery before you’re stranded.