Warming Up Your Car: Necessary or Myth?

by AutoExpert   |  31 January, 2024

Share :

Hey, let's break down this whole "warming up your car" thing. You know, that moment on a chilly morning when you're wondering if you should let your car sit and idle before driving off? Is it actually necessary, or just one of those car myths?

So, what's up with cold starts? You know those cold winter mornings when once you turn on the ignition, feels like the engine is going somewhat high? That’s ok, it is just your car warming up and preparing to drive you where you need to get.

Warming Up Your Car

Back in the days when cars had carbureted engines, they needed to be warmed up before driving the cold weather. But that’s not the case anymore, with all the modern cars running on fancy fuel-injected engines that will ensure the perfect mix of fuel and air without any help or warming up.

So, do we warm the cars or do we not warm the cars? The big majority say it’s not necessary. Those 20-30 seconds from igniting the car and buckling up are just enough. In crazy cold temperature, go ahead and leave it for a few minutes. Minutes, not half an hour or more. 

Warming Up Your Car

But hold up, why is idling for a long time a no-go? When your car is just sitting there idling, it's not just chilling. It's burning fuel, running the battery, and not doing a great job of it. This can leave gunk in your exhaust and isn't the best for your engine over time. Plus, it's a bit of a gas guzzler and not exactly eco-friendly. Cars that idle a lot can see their fuel economy drop big time, and they're tossing more CO2 into the air.

What if your car acts like it's too cold to get out of bed and won't start? A few things could be causing the cold shoulder. Car batteries aren't big fans of the cold, and thick engine oil can make it tougher for your engine to get moving. Sometimes, water in your fuel lines can freeze, or diesel can get all thick and gloppy.

Warming Up Your Car

Now, maybe you're idling your car to warm up the inside or defrost your windows. Totally get that, but extended idling isn't great for your car or the planet. Better to scrape off that ice, hop in, and get moving. Your car warms up quicker that way, and so does your cabin.

So, wrapping it up: unless you're cruising in a classic car from the good old days, you don't need to keep your car idling to warm it up. Modern cars are ready to roll pretty quickly. Just drive gently until it hits the right temp. This is the way to go for both your car's health and your wallet.

Warming Up Your Car

Got questions about warming up your car, engine block heaters, or living in cold climates? Quick answers – drive at moderate speeds to warm up your car and cabin faster, engine block heaters are great for super cold conditions, and as long as you keep up with maintenance, cold weather shouldn't be a big deal for your car. Diesel engines? They're just like gas ones – no need for a long warm-up.
Keep your car happy, and it'll keep you warm and moving, even on the coldest days!
 

Recomended:

Those Black Dots Around Your Windshield Have Been Hiding Several Important Jobs - Photo
Others
Those Black Dots Around Your Windshield Have Been Hiding Several Important Jobs

They run around the edge of almost every modern windshield: a solid black border that gradually breaks into smaller and smaller dots before disappearing into clear glass.Most drivers have stared t

AutoExpert
Your Tire Pressure Rose on the Highway. Put the Gauge Down Before Letting Air Out - Photo
Tips & Tricks
Your Tire Pressure Rose on the Highway. Put the Gauge Down Before Letting Air Out

The sticker inside the driver’s door says 35 PSI. After an hour on the highway, the dashboard says 39. Four extra pounds of pressure sounds like a problem. The tires were set correctly that morn

AutoExpert
Your Fresh Engine Oil Turned Black Already. Should You Be Worried? - Photo
Others
Your Fresh Engine Oil Turned Black Already. Should You Be Worried?

Fresh motor oil is reassuring stuff. It pours from the bottle in a clear amber stream, looking clean enough to belong in a kitchen rather than an engine.A few hundred miles later, the dipstick can

AutoExpert
The 2027 Toyota Tundra Gets The Upgrade It Needed Most - Photo
Car News
The 2027 Toyota Tundra Gets The Upgrade It Needed Most

Hoping to boost the Tundra's appeal, Toyota has introduced new features and a new Trailhunter model for 2027.Designed for overlanding enthusiasts, the new Trailhunter package is based on the S

AutoExpert
That Tiny Slot Beside Your Shifter Has a Job Most Drivers Never Discover - Photo
Others
That Tiny Slot Beside Your Shifter Has a Job Most Drivers Never Discover

A dead battery is annoying in any parking space. It becomes considerably more awkward when the car is nose-first inside a garage and the tow truck needs it in Neutral.The brake pedal feels normal.

AutoExpert
The “B” on Your Hybrid Shifter Does Not Mean Battery, Boost or Better Economy - Photo
Others
The “B” on Your Hybrid Shifter Does Not Mean Battery, Boost or Better Economy

Park, Reverse, Neutral and Drive need little introduction. Then there is B. It sits on the shifter of many hybrids looking important but refusing to explain itself. Battery seems like the obvious

AutoExpert
There Is Moisture Inside Your Headlight. Do You Actually Need a New One? - Photo
Others
There Is Moisture Inside Your Headlight. Do You Actually Need a New One?

The car comes out of the wash looking excellent, apart from one headlight. Behind the clear lens is a patch of mist, as though someone breathed on the inside of it. The other lamp may be perfectly

AutoExpert
Mercedes-Maybach Just Made Its Flagship SUV Even More Luxurious - Photo
Car News
Mercedes-Maybach Just Made Its Flagship SUV Even More Luxurious

Luxury SUVs have become the vehicle of choice for many ultra-wealthy buyers, and Mercedes-Maybach wants to make sure they don't have to compromise. The new 2027 Mercedes-Maybach GLS 680 takes ever

AutoExpert
Geely Says The Galaxy TT Doesn't Need A Huge Battery To Go 450 Miles - Photo
Car News
Geely Says The Galaxy TT Doesn't Need A Huge Battery To Go 450 Miles

A big battery isn't always the answer. Geely believes the smarter approach is building a more efficient electric drivetrain, and that's exactly what it has done with the upcoming Galaxy TT. Th

AutoExpert
Nissan Says Brake Caliper Colors Actually Mean Something - Photo
Car News
Nissan Says Brake Caliper Colors Actually Mean Something

Think brake caliper colors are just there to look good? Nissan says they actually serve a purpose. According to the automaker, the color behind the wheels acts as a quick visual guide, revealing the t

AutoExpert