People need car storage for all kinds of reasons. City dwellers might only drive occasionally. Others have cars they’ll use later, or collect classics they want to protect. And for digital nomads, self storage is a safe spot for both their cars and their stuff while they’re on the move.
This guide walks you through how to prepare your vehicle for storage — short-term or long-term, gas or electric — and what steps make all the difference once you turn off the engine for a while.
Understand your car storage options
Every car has a different story, and so does every storage setup. When it comes to vehicle storage, self storage facilities typically offer three main options, each with its own level of protection and price.
Uncovered parking spaces
These are open-air spots — the simplest and often the most affordable option. They work well for short-term storage or in mild climates where snow and frost are rare. Access is easy: drive in, park, and go. If you expect to use the car occasionally, this setup keeps things simple.
Covered parking spaces
Add a roof and you get protection from rain, snow, and sun exposure. Covered spaces strike a balance between cost and security, particularly if you live in a place where the weather has a mind of its own.
Indoor storage units
For long-term storage or valuable vehicles, an enclosed unit is the gold standard. It shields your car from dust, temperature swings, and moisture. A 10’20’ storage unit — roughly the size of a one-car garage — fits most vehicles comfortably, with a little extra room for tires, tools, or a few boxes. Most self storage facilities feature this unit size, as it’s among the popular ones with consumers. The national average for renting a 10’20’ unit stands at over $215 per month, according to Yardi Matrix data — however, costs can vary significantly depending on location.
How to prepare a gasoline or hybrid car for storage
Preparing your car for storage isn’t complicated, but it does reward care. Think of it as a checklist that ensures your car wakes up the same way you left it.
1. Clean the car inside and out
Start with a wash and wax. Remove all trash, vacuum the interior, and condition the leather if you have it. Clean the undercarriage — especially if you’ve driven through road salt or mud. Any dirt left behind can invite rust or pests.
2. Fill the gas tank and add a stabilizer
A full tank prevents moisture from accumulating inside and protects against corrosion. If you plan to store the car for more than a month, pour in a fuel stabilizer and run the engine for a few minutes to circulate it.
3. Change the oil and top off fluids
Used oil can corrode internal parts during long storage. Replace it, even if you’re not due for a change. Then check all fluids — coolant, brake, power steering, and transmission — and fix any leaks before parking for good.
4. Protect the battery
A fully charged battery degrades slower. If you’ll check on the car every few weeks, disconnect the negative terminal and start the engine periodically. If that’s not possible, use a battery maintainer or trickle charger, ideally in a unit with power access.
5. Mind the tires
Inflate your tires slightly above their normal PSI or place the car on jack stands to avoid flat spots. Long-term pressure loss is a quiet culprit of tire wear.
6. Avoid engaging the parking brake
Brake pads can fuse to the rotors over time. Instead, use wheel chocks to keep the vehicle from rolling.
7. Lubricate and seal
Lubricate hinges, locks, and moving parts. Cover the tailpipe and air intake with steel wool or foil to prevent small animals from setting up shop.
8. Cover and protect
Use a car cover suited to your environment — breathable for indoor storage, weatherproof for outdoor. Wrap wiper blades or separate them from the windshield to prevent sticking. For extra protection, add a windshield sunshade and pest repellents if your facility allows them.
Electric vehicle (EV) storage: A different set of rules
Electric vehicles need slightly different care when stored long-term, with the main focus on maintaining battery health.
- Charge the battery to 40–60%. Keeping it at full charge for months can reduce overall battery capacity, while letting it drop too low can cause damage.
- Enable “Storage Mode” or “Deep Sleep,” if your vehicle offers it. These settings minimize power consumption and help preserve battery life.
- Disconnect the 12-volt battery, just as you would in a gas-powered car, to prevent slow power drains from onboard electronics.
- Avoid extreme temperatures. A climate-controlled unit is ideal for long-term EV storage, as both heat and cold can affect battery chemistry and range.
As electric vehicles become more common, EV charging stations are starting to appear as amenities at some self storage facilities. If you plan to store your EV, ask whether the facility offers on-site charging or dedicated EV-ready units. This can make periodic top-ups easier and ensure your vehicle is ready to drive when storage ends.
Common mistakes to avoid
- Canceling insurance completely: Always maintain comprehensive coverage for theft, fire, or damage.
- Skipping pest deterrents: Mice can chew through wires in months.
- Leaving the parking brake on: It can fuse to the rotors.
- Ignoring the undercarriage: Road salt is quiet but destructive.
- Forgetting to visit occasionally: A brief check-in can prevent long-term surprises.
FAQs about car storage
1. How long can a car sit in storage without being driven?
With proper preparation — clean, fueled, fluids topped, and battery disconnected — a car can sit for six months to a year safely. Beyond that, check fluids, tires, and seals before restarting.
2. Should I disconnect the battery or use a maintainer?
If you’ll visit occasionally, disconnecting works fine. For extended periods, a battery maintainer offers steadier protection against discharge.
3. Can I store my EV long-term?
Yes — but keep it charged between 40% and 60% and use the manufacturer’s recommended “storage mode.” Climate-controlled storage is best for battery longevity.
4. Do I need to register my car while in storage?
Rules vary by state. If you plan to drive it immediately after storage, maintain active registration and car insurance. Some states allow temporary non-operational status for long-term storage.
Final thought
A car in storage is like a promise you’re keeping with your future self. With the right preparation, that first turn of the key — months later — will sound like gratitude.
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