The biggest mistake drivers make when starting their car that can ruin it, according to a mechanic

Mechanics warn that one common habit could be damaging your engine without you realizing it. Starting your car and driving away immediately may prevent oil from fully lubricating critical engine parts.

Experts recommend letting the engine idle for about 30–40 seconds before driving. This gives the oil time to circulate properly and helps reduce wear on internal components. Ignoring this simple step over time can lead to costly engine repairs and a shorter engine lifespan.