December is National Impaired Driving Prevention Month. Every year, more than 4,900 people are killed in crashes that occur during December months — a spike driven by holiday gatherings, alcohol, and an uptick in long-distance travel on roads that are anything but forgiving in winter.
The public health message is correct: don't drive impaired. But there's a second half to road safety that doesn't get nearly as much attention: the condition of your vehicle.
A sober driver in a car with worn tires and marginal brakes is not a safe driver. Vehicle condition kills people too — it just doesn't show up as neatly in the statistics.
What a Pre-Holiday Inspection Should Cover
If you're planning to drive more than a couple hours for Thanksgiving, Christmas, or New Year's, a basic safety inspection before you leave is worth every dollar. Here's what matters most:
Tires. Tread depth is obvious — but tire age is overlooked. Tires degrade from the inside out due to UV exposure and oxidation. A tire can look fine and still fail at highway speed if it's more than 6-7 years old. Check the DOT code on the sidewall (last 4 digits = week and year of manufacture).
Brakes. If your brakes squeal under normal braking, that's a warning. If they grind, that's metal on metal and an urgent problem. If the pedal feels soft or travels further than it used to, your brake fluid may be contaminated or your hydraulics may have an issue.
Lights. Walk around your vehicle and confirm every single light works — headlights, taillights, brake lights, turn signals, reverse lights. A dead brake light can get you rear-ended. Many states will pull you over for it.
Wipers and washer fluid. Rain, snow, and road spray are facts of December driving. Wipers that streak or skip are a visibility hazard. Make sure your washer fluid is rated for freezing temperatures — water in the reservoir will freeze at the nozzle.
Battery. Cold weather reduces battery capacity significantly. A battery that's been borderline all fall may not start at 6 AM when it's 18 degrees and you're trying to get somewhere. Most auto parts stores will test your battery for free.
Getting an Inspection Without Getting Upsold
Here's where the consumer protection angle matters. Pre-holiday season is prime time for shops to push unnecessary services. Not all of them do this — but enough do that you should be prepared.
Some things to watch for:
- Flush packages pushed at every visit. Coolant flush, transmission flush, power steering flush — most of these have manufacturer-recommended intervals. Check your owner's manual. If a shop is recommending a flush at half the manufacturer's stated interval, ask why.
- "We found something" calls that feel designed to create urgency. Legitimate shops will show you the problem, explain why it matters now, and give you time to decide. Shops operating in bad faith create artificial urgency.
- Parts that look dirty but aren't failing. Air filters, cabin filters, and battery terminals can look alarming on inspection but be perfectly serviceable. Get a second opinion if you're uncertain.
The Combination That Matters
National Impaired Driving Prevention Month is a reminder that the choices we make on the road — or before we get on the road — have real consequences for real people. Don't drive impaired. Don't drive a vehicle you haven't maintained. Both are choices, and both matter.
If you're not sure whether your car is ready for winter travel, get it looked at by a shop you trust before the holiday rush starts. Shops get busy fast in late November and December.
Find a verified shop near you at EthicalMechanic.org/find-a-mechanic.