How Often Should You Start a Car That's Not Being Driven?

[Roger]

It is recommended to start a car that remains idle for long periods at least once every two weeks, primarily for the following reasons: Lubrication of various car components: When a car is not started for an extended period, most of the lubricating oil that should coat the moving parts will flow back to the oil pan due to gravity, reducing lubrication effectiveness in these areas. Regarding engine startup: Without the protective oil film, metal parts are more prone to react with oxygen, forming an oxide layer that increases friction and makes starting the engine more difficult. Concerning battery lifespan: If the battery does not receive regular charging over a long period, the sulfation process of the battery plates will accelerate, increasing internal resistance and shortening the battery's service life.

[VivianAnn]

I've been into cars for thirty years and know that idle vehicles need regular starting to avoid issues. I recommend firing up the engine every two to three weeks, letting it run for at least ten to fifteen minutes. This keeps the battery charged to prevent no-start situations next time, and prevents oil from congealing to maintain lubrication. For long-term parking, check tire pressure during startup as tires may deform or lose air. In winter, increase frequency to biweekly starts to reduce freezing risks. I once neglected a car for months and had to replace the battery at a $500+ repair cost. Now I maintain two cars – a primary and a backup – starting each every twenty days, which works simply and effectively. Always start on level ground, never in hazardous locations. Overall, developing this habit saves money and hassle while extending vehicle lifespan.

[GrantRose]

As someone with a background in automotive repair, I recommend starting unused vehicles every four weeks. After starting, let the engine run for about ten minutes to allow the charging system to replenish the battery, preventing shortened battery life due to self-discharge. Brief engine operation helps circulate oil, reducing internal corrosion and wear. If the vehicle has been parked, check the engine compartment for debris accumulation and keep it clean. Additionally, for vehicles unused for over six months, consider adding a fuel stabilizer to prevent fuel tank gumming. Regarding the battery, if the vehicle is parked for more than a month, it's advisable to disconnect the negative terminal—this is professional advice. Regular starting isn't just about the engine; it also prevents brake disc rust and tire flat-spotting. Overall, every detail matters in maintenance to avoid costly major repairs.

[DeCharles]

For new car owners who don't drive often, what should you do when the car sits idle for too long? I've learned that you should start the engine every two to three weeks. Just let it idle for about ten minutes. The battery will gradually discharge if not started, causing trouble when you need to use it; short runs can recharge it without consuming too much fuel. Tires may deform from prolonged parking, so it's best to move the car slightly forward or backward when starting. Personal experience: I rarely used my car and forgot to start it initially, leading to a dead battery that cost me 400 yuan to replace. Now, I set a reminder on my phone—easy solution. Don't worry about it being too complicated; simple actions can protect your car and save money.