Winter can be brutal on your car. As temperatures plummet, even the most reliable vehicles face unique challenges. By avoiding these 8 common mistakes, you’ll keep your car running smoothly all season long. Ready to become a winter car care pro? Let’s rev up our engines and dive into the do’s and don’ts of cold-weather auto maintenance.
Don’t leave your gas tank near empty

When the mercury drops, keeping your gas tank at least half full isn’t just good practice—it’s essential. Why? A fuller tank prevents gas line freeze-up, a pesky problem that can leave you stranded. But that’s not all.
Condensation is your fuel system’s sneaky enemy in cold weather. As temperatures fluctuate, a low fuel level allows more air in the tank, leading to water buildup. This moisture can sink to the bottom and potentially freeze, causing serious damage to your fuel pump.
Plus, in the event you get stuck in snow or traffic, a full tank ensures you can keep the engine running and the heat on. It’s like having an insurance policy against Jack Frost’s worst attempts to derail your winter travels.
Don’t neglect your battery
Your car’s battery is the unsung hero of winter driving, but cold weather can be its kryptonite. As temperatures drop, battery power decreases, making it harder to start your engine. Don’t wait for that dreaded clicking sound to address battery issues.
First, visually inspect your battery for any signs of corrosion or loose connections. Clean off any buildup using a mixture of baking soda and water. Next, consider having your battery professionally tested, especially if it’s more than three years old. Many auto parts stores offer this service for free.
If your battery is on its last legs, replace it before the real cold hits. And here’s a pro tip: keep a set of jumper cables in your trunk. They’re a lifesaver if you or a fellow motorist needs a boost. Remember, a little battery TLC goes a long way in preventing winter woes.
Don’t use hot water to defrost your windshield

It’s a frosty morning, and you’re running late. The temptation to pour hot water on your icy windshield is strong. But resist! This quick fix can lead to a cracked windshield faster than you can say “winter wonderland.”
The science is simple: rapid temperature changes cause materials to expand and contract quickly. When you apply hot water to a freezing windshield, the glass expands unevenly, leading to stress that can cause cracks or even shatter the entire windshield. Not exactly the wake-up call you were hoping for, right?
Instead, use a proper ice scraper and de-icer spray. Start your engine and turn on the defroster to speed up the process. For an eco-friendly option, mix two parts rubbing alcohol with one part water in a spray bottle. This homemade solution lowers the freezing point of water and helps melt ice quickly without risking damage to your windshield.
Don’t forget to check tire pressure
Tire pressure isn’t just a summer concern. In fact, it’s even more critical in winter. For every 10-degree Fahrenheit drop in temperature, your tire pressure can decrease by about 1 PSI. That means a cold snap can leave you riding on seriously underinflated tires without you even realizing it.
Underinflated tires wear out faster, reduce fuel efficiency, and most importantly, compromise your vehicle’s handling and braking abilities—crucial factors when navigating slippery winter roads. Check your tire pressure at least once a month, and always before long trips.
Don’t rely on the eyeball test; use a reliable tire pressure gauge. And here’s a tip: check the pressure when the tires are cold, meaning the car hasn’t been driven for at least three hours. The recommended PSI for your vehicle can usually be found on a sticker inside the driver’s side door jamb or in your owner’s manual.
Don’t warm up your car in an enclosed space

On a frigid morning, the idea of starting your car and letting it warm up in the garage might seem tempting. But this common practice isn’t just unnecessary—it’s downright dangerous. Carbon monoxide buildup in enclosed spaces is a silent killer, odorless and invisible.
Modern vehicles don’t need extensive warm-up periods. In fact, idling for more than 30 seconds wastes fuel and increases wear on engine components. The best way to warm up your car is to drive it gently for the first few minutes. This allows the engine to reach optimal temperature more quickly and efficiently.
If you must warm up your car, do it outside in an open area. And always ensure your tailpipe is clear of snow or debris before starting the engine. A blocked exhaust can force carbon monoxide into the passenger compartment, creating a hazardous situation. Remember, when it comes to winter car care, safety should always be your top priority.
Don’t leave these items in your car overnight
Your car isn’t a mobile storage unit, especially in winter. Certain items can be damaged by extreme cold or even pose safety risks. Here’s what you should never leave in your car overnight during winter:
1. Electronics: Phones, laptops, and other gadgets with lithium-ion batteries can suffer permanent damage in freezing temperatures.
2. Medications: Many prescription drugs lose effectiveness if allowed to freeze. Always take your meds inside.
3. Canned beverages: They can explode when frozen, leaving you with a sticky, potentially dangerous mess.
4. Musical instruments: Extreme temperature changes can cause wood to crack and affect tuning.
Don’t skip wiper blade maintenance

In the world of winter car care, wiper blades are often the unsung heroes. They battle snow, sleet, and ice to keep your windshield clear, but they need some TLC too. Neglecting your wipers can lead to poor visibility and unsafe driving conditions.
First, never use your wipers to remove ice from your windshield. This can damage the rubber and reduce their effectiveness. Instead, use an ice scraper and let your defroster do its job. Regularly clean your wiper blades with windshield washer fluid to remove built-up grime and salt.
Consider switching to winter wiper blades. These heavy-duty versions are designed to prevent ice and snow buildup. And don’t forget to top off your windshield washer fluid with a winter-rated version that won’t freeze. A clear windshield is your ticket to safe winter driving, so give those wipers the attention they deserve!
Don’t ignore strange noises or performance issues
Winter has a way of amplifying existing car problems and creating new ones. That faint rattle you’ve been ignoring? It could turn into a major issue when temperatures plummet. Pay attention to your car’s behavior and address problems promptly.
Unusual sounds, difficulty starting, or a change in how your car handles could all be warning signs. Don’t brush them off as “just the cold.” Regular inspections and timely maintenance can prevent small issues from snowballing into expensive repairs.
Consider scheduling a pre-winter check-up with a trusted mechanic. They can inspect crucial components like your battery, alternator, and belts—all of which face added stress in cold weather. Remember, prevention is always cheaper than repair, especially when it comes to winter car care.
As we wrap up our winter car care guide, remember that a little preparation goes a long way. By avoiding these common mistakes, you’re not just protecting your vehicle—you’re ensuring your safety and peace of mind during the coldest months of the year. So, bundle up, stay alert, and enjoy the winter wonderland from the comfort of your well-maintained car. Safe travels!