Back to all

Wasteful Thinking

January 18, 2026

With the weather getting colder, you might be tempted to start your vehicle up, let it idle for 15 or 20 minutes and then get in the nice, cozy cabin.  Some vehicles offer remote starting that let you do that from the comfort of your home or apartment.  But is letting your vehicle idle like that good for it?

Manufacturers say it doesn't harm the vehicle.  They say it's because modern vehicles are made differently from those in the past.  Just about all newer vehicles employ fuel injection which uses computers to adjust the amount of gasoline that goes into the cylinders.  The engine gets only the fuel it needs, taking conditions into account.

Older vehicles, on the other hand, used to use carburetors.  When you started a cold engine, the carburetor wasn't able to adjust the gasoline amount depending on conditions.  Some of the gasoline would mix with oil and the pistons wouldn't get the same lubrication as they would with undiluted oil.

So yes, you can warm up your newer vehicle for your own personal comfort.  But consider how much fuel you are wasting.  That is not only throwing away money, it's a waste of natural resources.  And it puts more carbon into the atmosphere. 

Automakers have to be mindful of what fuel economy their vehicles can achieve.  So the flip side of the remote starts they offer is a "stop-start" feature.  When you stop your vehicle, even at a stoplight, your vehicle will turn the engine off.  When you take your foot off the brake and step on the accelerator, it starts up right away.  That feature can save as much as 10 percent of the fuel your vehicle uses. 

Your vehicle may not have that start-stop feature, but you can still save fuel by shutting off your engine manually if you are waiting somewhere, like a parking lot or perhaps sitting outside your child's school waiting to pick him or her up.  It saves you money and contributes to a healthier atmosphere for our planet.

Car Fix Libertyville
311 South Milwaukee Avenue
Libertyville, IL 60048
8478738044

Need Service?

Request a Quote

More articles from Car Fix - Libertyville

Line Them Up: Wheel Alignment Service at Car Fix Libertyville

April 26, 2026

Hello Libertyville! Let's talk about alignment. One of the most important parts of preventive maintenance for your vehicle is keeping the wheels in alignment. Poor alignment causes your tires to wear unevenly, which can significantly reduce their lifespan. This means you will have to replace th... More

Automotive Tips from Car Fix Libertyville: Wiper Blades – Signs of Wear

April 19, 2026

90% of our driving decisions are based on vision. Anything that impedes your vision can affect your driving safety including a dirty windshield. In that sense, your wiper blades are an important safety system. Most Libertyville drivers will wait until their wipers have failed before they replace... More

The Puzzling Puddle (Leaks Under Vehicle)

April 15, 2026

Ever notice a little spot of liquid under your vehicle after you've parked in your driveway or garage? It may have been something as simple as water left from air conditioning condensation. But then again, it could be a sign that there's trouble brewing in one of your vehicle's systems. You can... More