车辆的日常维修及保养主要包括定期更换机油、检查和更换滤清器、刹车系统、轮胎、冷却系统、燃油系统和空气滤清器、电气系统、底盘和悬挂系统以及车身和外观维护等。详细介绍如下：

　　The daily maintenance and upkeep of vehicles mainly includes regular oil changes, inspection and replacement of filters, brake systems, tires, cooling systems, fuel and air filters, electrical systems, chassis and suspension systems, as well as body and exterior maintenance. The detailed introduction is as follows: 12

　　发动机机油和滤清器：定期更换机油和机油滤清器是保持发动机正常运转的关键，机油起到润滑、清洁和冷却发动机内部零件的作用，而机油滤清器则能过滤掉机油中的杂质。

　　Engine oil and filter: Regularly changing the oil and oil filter is the key to maintaining normal engine operation. Oil plays a role in lubricating, cleaning, and cooling internal parts of the engine, while the oil filter can filter out impurities in the oil.

　　刹车系统：包括检查刹车片、刹车盘、刹车液等，确保其处于良好状态，并定期更换磨损的部件。

　　Brake system: including checking brake pads, brake discs, brake fluid, etc. to ensure they are in good condition, and regularly replacing worn components.

　　轮胎：定期检查轮胎的磨损、并在必要时进行轮胎的旋转和平衡，轮胎的状况直接影响到车辆的行驶和性能。

　　Tires: Regularly check for tire wear and, if necessary, rotate and balance the tires. The condition of the tires directly affects the driving safety and performance of the vehicle.

　　冷却系统：负责降低发动机温度，防止过热，应定期检查冷却液的水平和质量，并清洗冷却系统内部的杂质和沉积物。

　　Cooling system: responsible for reducing engine temperature, preventing overheating, regularly checking the level and quality of coolant, and cleaning impurities and deposits inside the cooling system.

　　燃油系统和空气滤清器：定期更换燃油滤清器和空气滤清器以及清洗喷油嘴等，可以保持燃油系统的良好状态。

　　Fuel system and air filter: Regular replacement of fuel and air filters, as well as cleaning of fuel injectors, can maintain the good condition of the fuel system.

　　电气系统：包括电池、发电机、点火系统等，应定期检查其功能和状态。

　　Electrical systems: including batteries, generators, ignition systems, etc., should be regularly checked for their functionality and status.

　　底盘和悬挂系统：负责车辆的支撑和行驶稳定性，应定期检查悬挂部件的磨损和紧固情况以及底盘的腐蚀和损伤。

　　Chassis and suspension system: responsible for the support and driving stability of the vehicle, and should regularly check the wear and fastening of suspension components, as well as the corrosion and damage to the chassis.

　　车身和外观维护：包括清洗车辆、打蜡、修复划痕等，这不仅能保持车辆的外观美观，还能防止车漆腐蚀和损伤。

　　Body and appearance maintenance: including cleaning the vehicle, waxing, repairing scratches, etc. This not only maintains the appearance of the vehicle, but also prevents paint corrosion and damage.

　　此外，根据车辆的具体情况和制造商的建议，还可能需要进行其他特定的维护保养项目，如变速箱油的更换等。以上就是车辆日常维护保养内容的一些常见项目。

　　In addition, depending on the specific condition of the vehicle and the manufacturer's recommendations, other specific maintenance and upkeep items may be required, such as replacing the transmission oil. The above are some common items for daily maintenance and upkeep of vehicles.