Blog · Updated October 23, 2026 · 6 min read · By the Miles team
Your car sat all winter. Check this before driving it.
A car that has been parked since last year may be fine, but do not turn the key and head straight onto the highway. A quick check of the battery, tires, fluids, brakes, and engine bay can catch the problems that make the first drive risky or turn it into a tow.
Start with a walkaround and a look under the hood
Before you start a car that has sat for months, inspect the ground, tires, and engine bay for leaks, damage, nesting material, or chewed wiring. Those checks are safer than discovering a flat tire, fuel smell, or rodent problem on the road. Save the inspection in Miles for next season.
Look beneath the car for a new wet spot, then check the driveway side of each tire for cracks, bulges, and nails. Open the hood before starting. Leaves, shredded insulation, acorns, and droppings can point to rodents. Do not pull at a wire bundle, but look for obvious damaged insulation or a disconnected hose. If you smell fuel, see a steady leak, or find wiring damage, stop there and arrange an inspection.
Use the VIN to check NHTSA's recall lookup, too. A car can sit through a recall notice, and an open safety recall is worth handling before it becomes part of the first drive.
Test the battery before relying on it
A battery can lose charge while a car sits, especially in cold weather, and a jump-start does not prove it will hold up on the next errand. Check for corrosion around the terminals, start the engine, and pay attention to slow cranking, dim lights, or a battery warning light before you decide the car is ready.
If the terminals have heavy white or blue-green buildup, or the battery case is swollen or leaking, do not improvise. A shop can test the battery and charging system quickly. If the car starts normally, let it run long enough to confirm warning lights clear, then shut it off and restart it once. A battery that only starts after a jump may need testing even if the engine runs afterward.
Check tire pressure and tire condition
Tires lose pressure naturally while a car is parked, and a tire can look normal while being too low to drive safely. Use a gauge before moving the car, set each tire to the cold pressure on the driver's door-jamb label, and inspect the sidewalls rather than trusting a visual glance alone.
NHTSA's TireWise guidance also recommends checking pressure monthly and before a long trip. Do not use the sidewall's maximum number as the target. If a tire is badly low, fill it and watch it. A tire that loses pressure again, has a bubble, or has visible cracking needs a tire professional before highway speed. Check the spare if your car has one.
Once pressure is right, roll the car a few feet and look for a tire that was sitting flat against the ground. A temporary flat spot can fade on a short drive, but vibration that persists or gets worse is a reason to stop and have the tires checked.
Check fluids and the service schedule
A few months of parking does not create one universal service interval, but it is a good moment to compare the odometer and calendar against the owner’s manual. The manual is the authority for oil, coolant, brake fluid, and other service ranges because the right schedule varies by vehicle, use, and conditions.
With the engine cold and the car on level ground, check the oil level and look for a warning light after startup. Check coolant only at its reservoir and only when the engine is cool. Low fluid can point to a leak, so topping it off without finding the cause is not always a fix. If an oil change was due before storage or is past the manual's time range, book it before a longer trip.
This is also a useful point to log the mileage and any work you arrange. Miles can keep the date, mileage, receipt, and next reminder together, including reminders based on either date or mileage. The features page explains how the history and reminders work.
Make the first drive short and deliberate
Make the first drive a short local loop where you can stop safely, because light rotor rust may clear with normal braking but a brake problem needs attention before a highway trip. Test the brake pedal while parked, then listen and feel for pulling, grinding, warning lights, vibration, or a pedal that feels soft.
A little scraping for the first few stops can be normal after damp storage. Grinding, a brake warning light, a pedal that sinks, a pull to one side, or noise that continues after the short drive is not a wait-and-see problem. See a mechanic promptly. The same goes for overheating, a flashing warning light, fuel smell, or a new steering problem. For related symptom checks, see what brake noises can mean and why a car pulls to one side.
Record what you found before it fades from memory
After the first drive, write down what you checked, what you repaired, and the mileage, because next winter you will not remember whether the battery was weak or the tires were replaced. A dated record also helps a shop understand what changed when a parked car develops a problem later.
Save a photo of any invoice and set the next relevant reminder while the job is still fresh. That is more useful than a note buried in a phone, especially for a car that is only driven seasonally. Read the winter checklist before the next cold spell, and keep the maintenance glossary handy when a shop uses unfamiliar terms.
Frequently asked questions
Can I drive a car that has been sitting for months?
Usually, after a careful check. Look over the tires, battery, fluids, brakes, and the area under the hood before you start it. If you find a leaking fluid, chewed wiring, a damaged tire, a brake warning, or anything that makes the car feel unsafe, do not take it on the road. Have a mechanic inspect it instead.
What happens when a car sits unused?
A parked car can develop a weak battery, low tire pressure, surface rust on brake rotors, stale fuel, and moisture-related problems. Rodents may also nest under the hood and chew insulation or wiring. How much happens depends on the vehicle, where it was parked, the weather, and how long it sat.
Should I change the oil after a car sits all winter?
Not automatically. Check the time and mileage interval in the owner’s manual, which is the authority for your vehicle. If the oil was already due before storage, is past the manual’s time range, or looks contaminated, arrange service before a long drive. A few months of parking alone does not create a universal oil-change interval.
Why do brakes make noise after a car has been sitting?
Light surface rust can form on brake rotors while a car is parked, and it often clears after a few normal stops. Grinding, a brake warning light, a soft pedal, pulling, or noise that continues after a short cautious drive needs prompt attention from a mechanic.