How to Store a Car Over Winter: 8 Steps to Protect an Unused Vehicle

A parked car isn’t a safe car. Cold, damp weather and weeks of sitting still can drain the battery, flat-spot the tyres, seize the brakes and let moisture into the fluids. The steps below help your car start cleanly in spring, whether it’s in a London garage, a driveway or a private parking space.

1. Wash and wax the exterior before parking

Dirt left on paint for months can damage it permanently. Road salt, mud, bird droppings and tree sap all eat into the finish.

• Clean the whole car, especially the wheel arches and undercarriage, where salt collects and starts rust.
• Dry it completely. Moisture trapped in door seals and seams causes more corrosion.
• Apply a fresh coat of wax for a protective barrier.

2. Fill the fuel tank and add a stabiliser

Petrol goes stale after a few months, leaving gum and varnish that can block fuel injectors and fuel lines.

• Fill the tank to about 95%. A fuller tank leaves less air inside, so less condensation (water) can form.
• Add a fuel stabiliser, then run the engine for five to ten minutes so it reaches the whole fuel system.

3. Change the engine oil

Used oil contains acids that slowly corrode metal bearings. If an oil change is due, do it before storage, not in spring. Fresh oil leaves a clean protective film on the engine’s internals. While you’re under the bonnet, check that the coolant and antifreeze levels are right for cold weather.

4. Protect and maintain the battery

Cold weather is hard on batteries. Alarms, GPS trackers and other electronics can drain a battery flat within weeks.

• If there’s a power source nearby, connect a smart battery maintainer or trickle charger.
• If there isn’t, disconnect the negative terminal to stop parasitic drain.

5. Prevent flat spots on tyres

A car that sits in one place for months presses down on the same part of each tyre, which can cause flat spots.

• Raise the pressure slightly above the normal running figure. Check your handbook or door-jamb sticker, and never exceed the maximum printed on the tyre sidewall.
• Consider axle stands for storage of several months, so the weight comes off the tyres.

6. Leave the handbrake off

In cold, wet conditions, brake pads and shoes can bond to the discs or drums if the handbrake stays on for weeks.

• Automatics: put the car in Park.
• Manuals: leave it in gear.
• Both: use wheel chocks so the car can’t move.

7. Choose the right cover

• Indoors (garage): use a breathable cotton cover to keep dust off without trapping moisture. Never use a plastic cover indoors, because it holds damp against the paint.
• Outdoors: use a strong, weatherproof, properly fitted cover.

8. Keep pests and damp out of the cabin

Mice and insects look for warm, quiet places to nest, and they chew wiring and upholstery.

• Vacuum thoroughly and remove food wrappers, crumbs and other organic waste.
• Block entry points. Put a steel wool pad or clean cloth in the exhaust pipe and check vulnerable air vents. Leave a note on the steering wheel so you remember to remove it before starting the engine.
• Control moisture. Put silica gel packs or baking soda in the footwells.

Store it or scrap it? A quick comparison

Before you drive again in spring

On a dry day, work through this checklist before you start the engine:

1. Look for pests. Inspect the bonnet area, wiring and exhaust for nests or chewed wires.
2. Remove what you added. Take out the exhaust plug and refit the wiper blades if you removed them.
3. Check fluids and battery. Switch off the battery maintainer, check fluid levels and the battery, and look for fresh drips on the ground.
4. Restore tyre pressure. Return the tyres to the normal recommended pressure.
5. Test the brakes gently. Let the engine warm up, then test the brakes carefully at low speed.

When storing isn’t worth it

Basic preparation helps a car you plan to keep come through winter without rust, flat batteries or brake problems. But an unused car still costs money: insurance, vehicle tax, MOT and parking all keep running. If your car is old, has mechanical problems, or you simply don’t need it, scrapping it may make more sense.

Brits Car Breakers is a licensed Authorised Treatment Facility (ATF) offering free scrap car collection across North, East, South, West and Central London, including Bethnal Green, Stratford, Croydon, Wembley, Ilford and Enfield. We collect cars in any condition, including non-runners and MOT failures. We handle the DVLA paperwork and issue your Certificate of Destruction within 7 days.

👉 Get your free instant quote or call +44 7506 646552 (Mon–Sat, 8:00 AM–6:00 PM).