
The first maintenance for a Focus is at 5,000 kilometers, mainly involving oil and oil filter replacement. Subsequently, the oil should be changed every 10,000 kilometers, and the oil filter every 20,000 kilometers. The spark plugs should be replaced for the first time at 35,000 kilometers, and then every 40,000 kilometers thereafter. The brake fluid should also be replaced for the first time at 35,000 kilometers, and then every 40,000 kilometers. Below is some relevant information about car maintenance: 1. Car maintenance primarily involves regular inspection, cleaning, replenishment, lubrication, and replacement of parts as a preventive measure. 2. Car maintenance mainly focuses on the engine system, transmission system, air conditioning system, cooling system, and fuel system. 3. During driving, mechanical friction occurs to a certain extent, leading to wear and tear on the car. Therefore, it is necessary to perform appropriate maintenance based on the car's condition.

As a Focus owner who has driven it for several years, I find the optimal maintenance interval to be between 7,500 to 10,000 kilometers. For new cars, the manual might suggest 10,000 kilometers, but if you frequently drive on highways or have aggressive driving habits, it's better to shorten the interval—perhaps checking every 6,000 kilometers. Older Focus models might require more frequent maintenance, such as oil changes every 5,000 kilometers. Don’t forget environmental factors; in dusty areas or during hot summers, oil degrades faster, so early maintenance can protect the engine. I’ve made it a habit to regularly check tire wear and the braking system, ensuring smooth driving and avoiding unexpected breakdowns. Overall, my advice is to refer to the official manual but adjust flexibly to keep the car in top condition.

As a Focus commuter, I've noticed that urban congestion significantly impacts maintenance. Being stuck in rush-hour traffic daily means the engine runs at low RPMs but for extended periods, causing oil to dirty quickly. That's why I service my car every 5,000 km or every six months. If you frequently drive mountain roads or carry heavy loads, wear accelerates, requiring maintenance intervals around 4,000 km. Don't just focus on mileage—consider time too, as oil degrades. When I delayed my last service slightly, noticeable jerking while driving revealed deteriorated oil. I recommend routinely checking components like air filters—keeping them clean boosts efficiency, saving money and hassle.

When I first bought my Focus, I was quite careless. Later, as I learned more, I understood that maintenance intervals are typically every 10,000 kilometers or 6 months. The manufacturer's manual provides clear recommendations, and newer models might have longer intervals, but don't exceed them to avoid affecting the warranty. I learned one thing: for example, if the oil light comes on, get it checked quickly—don't wait until a failure occurs. Simply put, regular minor maintenance at fixed intervals helps prevent major issues.


