Is it a big deal if the car is not driven for half a month?

[Mackenzie]

Not driving the car for half a month will have some impact. Prolonged parking mainly affects the engine, battery, tires, etc. The fuel injectors of the engine may become clogged due to gasoline volatilization. Here are some related issues about long-term parking: 1. First, during long-term parking, the engine oil may deteriorate, leading to problems with lubrication and increased wear. 2. Not only the engine oil, but various coolants may also deteriorate. The engine can be damaged under such conditions. 3. Usually, if a car is not driven for half a month, the battery may still have some charge, but the voltage will have dropped, making it harder to start. If the vehicle is parked for more than three months, the battery may be almost completely discharged. Note that the rate of power consumption is somewhat related to the manufacturing process of the battery.

[McMorgan]

I often leave my car in the garage for two or three weeks during business trips, and it does cause some minor issues. The most obvious one is battery drain – I've returned to find I couldn't even unlock the doors and had to call for a jump start. Rubber components like tires can deform from prolonged pressure on one side; last time after leaving it for half a month, I noticed steering wheel vibration, and the mechanic later found slight tread deformation. Another time, the brake pads had rust-welded to the discs, producing a loud 'bang' when starting – the mechanic explained it was rust adhesion. Now I've learned better: before leaving, I inflate tires to 3.0 bar, disconnect the battery negative terminal, place moisture absorbers inside, and always check engine oil before starting upon return.

[MacDeclan]

Had the same experience! Last week when I returned from quarantine hotel, my car wouldn't start after sitting for 15 days. The rescue mechanic said modern vehicle anti-theft systems and dashcams' standby modes constantly drain power - half a month is enough to kill an old battery. Even worse are fuel system issues - mine runs on ethanol-blended gasoline, and the mechanic said oxidized deposits can easily clog fuel injectors. Now I always fill the tank three-quarters full and add half a bottle of fuel additive. For mechanical parts, pay attention to belts - especially on cars over seven years old - sudden starts after long parking can snap them. Recommendation: turn ignition to ON for 5-minute self-check before restarting, let oil settle in pan, then gently press accelerator - avoid flooring it immediately.

[GageMarie]

It all depends on the vehicle condition. New cars within three months are generally fine. Last time during the lockdown, I parked my newly purchased SUV for a month, and it worked perfectly after jump-starting. However, extra caution is needed for vehicles over seven years old: rubber oil seals tend to dry and crack, causing leaks. Once, I noticed oil stains under the engine. Tire deformation is common—a colleague's Giti tires developed flat spots after just 20 days of parking, causing body vibrations above 80 km/h. The most troublesome issue is shortened battery life. Mechanics say a completely dead battery two or three times usually means it's done for. So, if the car sits idle for over ten days, I use a jack to lift the chassis and relieve tire pressure, leave the hood open for ventilation, and cover the car with a protective cover to prevent bird droppings and tree sap.

[ORowan]

For short-term parking, focus on three key protective measures: Battery maintenance - it's advisable to keep an emergency power source; Tire protection - use thick rubber mats to isolate ground moisture; Body care - best to park in an underground garage. I remember once parking outdoors for two weeks during rainy weather, only to find the windshield wipers stuck to the glass - forcing them caused the rubber blades to tear. Also, the door seal strips deformed and wouldn't close properly, letting water in, which later cost 800 to replace. Now I apply dashboard wax to door seals in advance and leave a 3mm gap in the windows. Always remove all food from the car - a friend found moldy mooncakes in his car last week. When using the car again, drive slowly for 2km to remove rust from the brakes.

[DelClaire]

Just handled a similar case. Battery drain mainly depends on temperature. In winter, the battery level may drop to 30% after just ten days of parking, but under tree shade, it can last twenty days. Tire issues are more severe than imagined - a friend's Michelin tires developed sidewall bulges after 18 days parked. Recommend cutting four tire pads from old carpets to isolate from ground moisture. Electronic systems can also malfunction - a neighbor's BMW key fob failed last time due to disrupted control module sleep mode. The most unexpected was cabin odor, lifting the seat revealed mice had nested. Now using Sichuan pepper sachets to repel pests. Before reuse, always check undercarriage for small animals, abnormal tire pressure, and start slowly to allow oil circulation.