My mechanic always turns on the headlights of the car 10 seconds before starting the car . When I found out why he did this, I was surprised, because I had never seen such a thing . Now I do it myself and I am delighted with this trick . I will explain to you what is the point of turning on the headlights 10 seconds before starting the car

You may have seen a viral tip online that says: “Turn on your headlights 10 seconds before starting your car to save money.”
It sounds simple, quick, and effective — but is it really true?

Let’s break it down.

Where does this idea come from?

This tip is based on an old belief related to car batteries and electrical systems. The idea is that turning on the headlights first can “prepare” the battery and reduce stress when starting the engine.

In older cars, especially those from decades ago, electrical systems were simpler and less stable. Some drivers believed that turning on a small load like headlights could stabilize voltage before starting.

But modern cars are very different.

What happens when you start your car?

When you start your engine, the battery sends a large amount of power to the starter motor. This is the moment when the battery works the hardest.

In modern vehicles, the system is designed to handle this automatically. The car’s electronics manage power distribution efficiently without needing any manual steps from the driver.

So turning on your headlights before starting the car does not significantly reduce the load or “save” the battery in any meaningful way.