When should maintenance service, including brake checks and spark plug installations, be performed?

Routine maintenance is essential for ensuring that a vehicle operates safely and efficiently. These services, which include checking the brakes and replacing spark plugs, play a vital role in the longevity and performance of the vehicle.

Performing maintenance every 15,000 miles or annually aligns with recommended practices from many automobile manufacturers and industry professionals. This frequency allows drivers to catch potential issues early, keeping the vehicle in good working condition and preventing more extensive and costly repairs down the line. Regularly scheduled maintenance, whether based on mileage or time, fosters a proactive approach to car care, which is crucial for both safety and reliability.

The other options suggest intervals that might be too infrequent for essential maintenance tasks, which could lead to diminished performance, compromised safety, and potentially more significant repairs if critical components fail. Having a maintenance schedule that adheres to the recommended intervals ensures that systems such as brakes, which are vital for safe operation, are regularly inspected and serviced.