Winter in Maryland can be hard on more than just your morning commute—it’s tough on your car, too. Cold temperatures affect everything from your engine and tires to your battery and fluids, often leading to issues that can impact safety, fuel efficiency, and overall performance.
At Ken’s Automotive & Transmissions, we want to help drivers stay ahead of seasonal challenges and keep their vehicles running reliably through the coldest months of the year. Here’s how winter weather affects your car, and what you can do to prevent problems before they start.
Your Battery Loses Power
Cold weather and car batteries don’t mix well. As temperatures drop, the chemical reactions inside your battery slow down, reducing its ability to produce power. At 32°F, a car battery can lose up to 35% of its strength, and at 0°F, it can lose more than half.
If your vehicle struggles to start in the morning or your headlights seem dimmer than usual, it could be a sign that your battery is weakening. A quick battery test at Ken’s Automotive can help you avoid that dreaded “click-click” when you turn the key on a cold morning.
Engine Oil Thickens in the Cold
Cold temperatures cause engine oil to thicken, which makes it harder to circulate through your engine. This means your engine has to work harder during startup, leading to extra wear and reduced fuel efficiency.
To protect your engine:
- Use the correct oil viscosity for winter as recommended in your owner’s manual.
- Stick to a regular oil change schedule; fresh oil flows more easily and lubricates better in cold conditions.
Tire Pressure Drops
For every 10°F drop in temperature, your tire pressure decreases by about 1 PSI. Low tire pressure reduces traction, fuel economy, and handling—all of which are critical for safe winter driving.
Underinflated tires also wear unevenly and are more prone to blowouts.
What to do:
- Check tire pressure at least once a month during winter.
- Fill tires to the manufacturer’s recommended PSI (found inside your driver’s door).
- Consider switching to winter or all-weather tires for better grip in cold, icy conditions.
Fluids Can Freeze or Thicken
Cold weather affects several fluids that are essential to your vehicle’s operation:
- Coolant/antifreeze: Keeps your engine from freezing and overheating.
- Transmission fluid: Thickens in extreme cold, affecting gear shifts.
- Windshield washer fluid: Can freeze if it’s not rated for low temperatures.
Make sure all fluids are topped off and properly mixed for winter conditions. During our winter vehicle inspections, we test fluid levels and strength to make sure they’ll perform even on the coldest days.
Tire and Suspension Components Stiffen
Rubber components like tires, belts, and suspension bushings become less flexible in the cold, which can lead to noise, vibration, and even cracking over time.
Cold weather can also cause metal parts to contract, leading to squeaks or reduced responsiveness. Regular inspections can help identify small issues before they turn into costly repairs.
Reduced Fuel Efficiency
You might notice you’re filling up more often in winter, and it’s not your imagination. Cold air is denser than warm air, which increases aerodynamic drag on your vehicle. Combined with longer engine warm-up times and increased idling, it’s common for fuel economy to drop by 10–20% in cold weather.
Simple ways to improve winter fuel efficiency include:
- Avoiding long idling periods.
- Keeping your tires properly inflated.
- Removing roof racks or excess weight when not needed.
Keep Your Vehicle Winter-Ready with Ken’s Automotive & Transmissions
Winter driving can be tough, but with the right maintenance and care, your vehicle can handle it with ease. From batteries and oil changes to tires and fluid checks, Ken’s Automotive & Transmissions has everything you need to prepare for cold weather.
Our certified technicians provide comprehensive winter vehicle inspections to make sure your car is safe, efficient, and ready for the road ahead. Call us today at (301) 662-5100 or contact us online to schedule your seasonal service appointment.
