Winter is the hardest season your car faces all year. Cold mornings drain the battery, wet and icy roads test your tyres, and shorter days lean on your lights and wipers. This winter car preparation checklist covers all of that, the essentials every UK driver should work through before the cold sets in. But it also covers the one thing almost every other checklist forgets: your paintwork. Between road salt, grit and constant damp, winter is genuinely the most damaging season there is for a car’s paint, and a few minutes of prep now saves an expensive rust repair come spring.
Work through the essentials first, then the paint-protection section where, as touch-up paint specialists, we can tell you exactly what you need to do.
The Safety and Mechanical Checklist
These are the non-negotiables, drawn from what the UK’s recognised motoring bodies advise. None of it takes long, and catching a problem now is far cheaper than a breakdown later.
Battery. Battery trouble is the single biggest cause of RAC winter callouts, because cold weather cuts a battery’s performance while the heater, lights and wipers all pull harder on it. Batteries typically last three to five years, so if yours is in that range, get it health-checked before winter rather than after it lets you down on a frosty morning.
Checking it is straightforward. Most Halfords and local garages will do a free battery health test in minutes, using a tester clipped to the terminals to measure voltage and cold cranking performance. If you’d rather spot the warning signs yourself, listen for a slow or sluggish engine turn-over when you start the car, watch for headlights that dim at idle, and check the battery casing for any swelling, corrosion around the terminals or a build-up of white powder.
Tyres. Your only contact with wet and icy roads. The legal minimum tread is 1.6mm, but the RAC advises at least 3mm through winter for proper grip, and you can check quickly with the 20p test, if the outer band of the coin is visible in the tread, your tyres are too worn. Check pressures too, since cold air lowers them.
Fluids. Top up your engine oil and coolant, and make sure the antifreeze is at the right concentration so it protects against both freezing and corrosion through the cold months.
Screenwash. Use a winter-grade screenwash rated to at least -15°C and never dilute it with plain water, which will freeze in the tank. RAC patrols are regularly called to cars whose screenwash has frozen solid. Keep a spare bottle in the boot.
Lights. Shorter days mean your lights work overtime, so check every bulb and indicator, and keep the lenses clean so you can see and be seen.
Wipers and windscreen. Replace any worn or split blades, and remember it is a legal requirement to clear the whole windscreen of snow and ice before setting off, not just a small porthole. Keep an ice scraper and de-icer to hand.
A winter emergency kit. Pack an ice scraper, de-icer, a torch, warm layers, jump leads, a phone charger, and some food and water for longer journeys, so a breakdown in the cold stays an inconvenience rather than a crisis. The RAC has a full winter breakdown kit checklist if you want to build yours out.
The Step Most Checklists Miss: Protecting Your Paint
Here is where the standard checklists stop and where, as paint specialists, we would tell you not to. Winter is the worst season your paintwork faces, and understanding why makes the fix obvious.
Gritted and salted roads throw up a corrosive, abrasive mix that clings to the car. Salt accelerates corrosion anywhere the paint is already broken, grit flicks up and causes fresh chips, and the constant damp keeps any exposed metal wet for weeks at a time. There is a particularly nasty mechanism worth knowing about too. When water works its way under a chipped edge and then freezes, it expands, pushing the surrounding paint up and popping it into a bubble, which opens up a bigger gap for salt to get into and corrode. That is how a minor chip in November becomes a bubbled, rusting patch by March. Here is how to stay ahead of it.
Wash the salt off regularly. This is the single most protective winter habit, full stop. Rinsing salt and grime off before it sits and works into the paint is what keeps corrosion at bay, and it matters most after driving on freshly gritted roads. A waterless wash and wax makes this quick even in cold weather, when hauling out a hose and bucket is the last thing you fancy.
Lay down protection before winter hits. A coat of wax or sealant acts as a sacrificial barrier between the salt and your lacquer, taking the punishment so your paint does not. Our Pro Detailer gives a protective, high-shine finish in one step, ideal as a pre-winter treatment and an easy top-up through the season. Many owners also protect the underbody with a product like Waxoyl or Dinitrol, which is well worth considering for the parts of the car the salt hits hardest.
Fix existing chips before winter, not after. This is the big one, and the mistake we see most. An unsealed stone chip heading into a salty winter is exactly where rust takes hold, because the salt reaches the bare metal and the damp keeps it there. Sealing your chips with colour-matched touch-up paint before the salt season is far, far easier than dealing with rust in spring. If a chip has already started to rust, treat it first with a rust converter to turn the corrosion into a stable, paintable surface, then seal over it. For the full picture on how quickly a chip can rust, our stone chip repair guide covers it.
Keep on top of new winter chips. Salt makes winter the peak season for fresh chips, so a quick check every couple of weeks and a prompt touch-up stops small damage becoming a spring rust problem. Match your colour with our colour-match tool and a repair kit gives you everything to seal chips as they appear.
Your Printable Winter Checklist
Here is the whole thing in one scannable list to save or print.
Safety and mechanical:
- Battery health-checked (especially if 3 to 5 years old)
- Tyre tread at 3mm or more, pressures correct
- Oil, coolant and antifreeze topped up
- Winter-grade screenwash (to at least -15°C), spare in the boot
- All lights and indicators working, lenses clean
- Wiper blades replaced if worn, scraper and de-icer packed
- Emergency kit in the boot
Paint protection:
- Salt washed off regularly through the season
- Wax or sealant laid down before winter
- Existing chips sealed before the salt season
- Any rusted chips treated, then sealed
- New chips checked for and touched up as they appear
