Car repair involves diagnosing and fixing issues with vehicles to ensure they operate safely and efficiently. Common repairs include changing oil, replacing brake pads, and fixing electrical problems. Mechanics use specialized tools and equipment to perform these tasks, often following manufacturer guidelines. Regular maintenance is essential for prolonging a car's lifespan and preventing costly repairs. This includes routine checks like tire rotations, fluid level inspections, and battery tests. Many car owners rely on professional mechanics or auto repair shops for these services, while some choose to perform basic repairs themselves with the right knowledge and tools.