Every holiday season, thousands of people break down on the side of a highway because of something that could have been caught in a 30-minute inspection a week earlier. Cold weather is hard on cars. Long drives expose problems that short commutes hide. And being stuck on I-95 at 11pm on Thanksgiving eve is not the kind of memory you want to make.
Here's what to check before you go.
Tires
This is the most important one. Cold air reduces tire pressure — roughly 1 PSI for every 10 degrees of temperature drop. Low pressure affects handling, braking, and fuel efficiency.
- Check pressure on all four tires (and the spare) when the tires are cold
- Look for uneven wear, which can indicate alignment or suspension issues
- Check tread depth — the quarter test works (insert a quarter upside down; if you can see the top of Washington's head, you're getting low)
Brakes
If your brakes have been squealing, grinding, or the pedal feels soft — do not put this off until after the trip. Cold, wet roads plus compromised brakes is a dangerous combination. Have a mechanic check brake pad thickness and rotor condition before you go.
Fluids
Run through all of them:
- Coolant/antifreeze — Most important for winter. Make sure it's at the right level and mixed correctly for your climate
- Oil — Check level and color; if it's dark and overdue, change it before the trip
- Brake fluid, power steering fluid, transmission fluid — All should be at proper levels
- Windshield washer fluid — Use winter-rated fluid that won't freeze in the reservoir or on the glass
Belts and Hoses
Cold temperatures make rubber brittle. A cracked belt or hose that's been "fine" all summer can fail on a cold morning under load. Have someone visually inspect belts for cracking or fraying and hoses for soft spots or leaks.
Lights
Walk around the car and check that every light works — headlights, brake lights, turn signals, reverse lights. This takes five minutes and it's a safety and legal issue.
Wipers and Defroster
Winter wipers make a real difference if you're driving in rain or snow. Make sure your rear defroster works, too — driving with a fogged rear window is dangerous.
Battery
Cold weather is when weak batteries die. If your battery is three or more years old, get it tested before a long trip. Many auto parts stores will test it for free.
Heating System
This sounds obvious, but make sure your heat actually works well. If it takes a long time to warm up or never gets warm enough, that can indicate a coolant system issue.
Emergency Kit
Pack the car before you leave:
- Jumper cables or a portable jump starter
- Flashlight
- Blanket
- Basic tools (screwdrivers, pliers)
- First aid kit
- Phone charger / power bank
- Water and snacks
"The best time to check your car for a trip is a week before you leave — not the morning of."
Pre-Trip Inspection: What It Costs
A full pre-trip inspection at a reputable shop typically runs $50–$100 and covers all of the above in one visit. Some shops do it for free as a courtesy with other service. Mobile mechanics can also do pre-trip inspections if getting to a shop is inconvenient — just make sure you've vetted them first.
EthicalMechanic.org can help you find mechanics who have been reviewed and reported by real customers before you trust them with your pre-trip inspection. Don't wait until you're broken down to wish you'd checked.
Safe travels.