I’ve heard that starting your car uses a lot of gas. So are we really saving on emissions with our cars constantly turning off and on?
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Older engines, absolutely. Newer vehicles have much more efficient starting so it’s basically better to turn it off any time you don’t need it, rather than to idle it in nearly every situation.
There are still many vehicles that have an idle time where it’s better to idle than shut down, but for cars that have start-stop that time is so miniscule it’s almost always better to shut off than idle.
Starting a cold engine requires a lot of gas and results in wear on the engine. But starting a warm engine that has lubrication where it is needed do not require do not have those problems.
There are some small changes to the motor and an electric starter motor design for a lot more usage in a car like that. The result is that stoping the engine when idling is a good idea
7 seconds. If you’re gonna be stopped for more than 7 seconds, you should shut off the engine. It doesn’t just reduce it emissions, it saves fuel, too, which is a benefit for you as it means fewer trips to the has station. So, anytime you’re waiting in a fast food drive through or a really long stop light; just shut it off (unless your car is older than 1980 – then maybe go for 10-15 seconds as rule of thumb)
So…yes. we do
No it doesn’t. It ruins the car battery much faster and increases wear on your engine components.
Same cost overall
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