Why Winter Car Prep Matters
Cold Weather Risks to Your Vehicle
Winter brings a host of challenges that can strain your vehicle. Cold temperatures thicken fluids, reduce battery efficiency, and make components like rubber seals and wipers more prone to cracking. Icy roads put extra demand on tyres and brakes, while grit and road salt can accelerate rust and corrosion if left unchecked.
Your car may start perfectly well in summer but struggle once temperatures drop. Ignoring seasonal checks can result in poor performance, dangerous driving conditions — or even a breakdown when you least expect it.
How a Few Checks Can Prevent Breakdowns
Taking 30 minutes to inspect key areas of your car before winter sets in could save you hours waiting for roadside assistance — not to mention the cost of emergency repairs. Simple actions like topping up antifreeze, checking tyre tread and ensuring your lights work correctly can dramatically improve cold weather reliability.
Preventative maintenance is almost always cheaper than fixing problems later. Many of the checks can be done at home, without tools, and will give you peace of mind every time you head out in freezing weather.
Fluids and Engine Essentials
Top Up and Check Your Antifreeze
Your engine's cooling system relies on a mixture of water and antifreeze (also known as coolant) to regulate temperature. In winter, this is crucial — without sufficient antifreeze, water in the radiator can freeze, expand, and crack the engine block, potentially causing catastrophic damage.
Check the coolant reservoir when the engine is cold. The level should sit between the minimum and maximum marks, and the fluid should be clear or coloured (typically pink, green, or blue depending on the type). If you're unsure about concentration, a garage can test it in seconds. You can also buy affordable testers to check it yourself.
Engine Oil and Coolant Levels
Cold temperatures make engine oil thicker, which can affect how well it circulates on start-up. Make sure your oil level is correct by checking the dipstick — ideally, you want it close to the maximum mark but not over it. If your oil looks dirty or it's been a while since the last change, winter is a good time to replace it with fresh oil of the correct grade.
Also ensure your coolant level hasn’t dropped — a slow leak may go unnoticed until the system fails under pressure. Topping up now can help prevent costly engine overheating or freezing issues during icy spells.
Windscreen Wash for Sub-Zero Conditions
Many drivers overlook screenwash — until it freezes in the jets and leaves you with zero visibility behind a salted windscreen. Make sure you’re using a winter-grade screenwash that won’t freeze below zero. Don’t dilute it with too much water in colder months.
Top up the reservoir fully and test the jets to ensure they're spraying evenly. If the washer nozzles seem blocked, clean them out gently with a pin or needle. Always carry extra washer fluid in the boot — you’ll use it more often in winter due to salt and grime on the roads.
Battery and Electrical System
Why Batteries Fail in Cold Weather
Car batteries are particularly vulnerable during winter. Cold temperatures slow the chemical reactions inside the battery, reducing its ability to deliver power. This means your car needs more energy to start at exactly the time your battery is offering less.
If your battery is already ageing or weak, the cold weather may be enough to finish it off. Short journeys can also prevent the battery from recharging properly, leaving it drained over time.
Signs Your Battery Might Need Replacing
If your engine is slow to turn over, or if you hear clicking when turning the key, your battery may be struggling. Other warning signs include dim headlights, flickering dashboard lights, or the need to jump-start the vehicle more than once.
Batteries typically last between 3 and 5 years. If yours is approaching that age, it’s worth getting it tested — many garages offer this service for free. A new battery can be a worthwhile investment before the coldest months hit.
Tyres, Brakes and Grip
Check Tread Depth and Tyre Pressure
Your tyres are your only contact with the road — so their condition is crucial in wet, icy or snowy conditions. Legally, tyres must have at least 1.6mm of tread depth, but in winter it’s recommended to have 3mm or more for safer grip.
Cold air reduces tyre pressure, which affects handling, braking and wear. Check your pressures regularly, especially during temperature drops. Inflate them to the manufacturer’s recommended level, and don’t forget the spare if you have one.
When to Consider Winter Tyres
Winter tyres use a softer rubber compound and deeper tread pattern to maintain grip in low temperatures — typically below 7°C. They perform significantly better than summer tyres on icy or slushy roads, reducing stopping distances and improving handling.
In areas where snow and frost are common, investing in winter tyres can greatly improve your safety and confidence. They can be stored and swapped out seasonally, extending the life of both tyre sets.
Brake Responsiveness and Wear
Slippery roads mean your brakes must be in top condition. If you notice any grinding, squeaking, or a soft brake pedal, get your system checked as soon as possible. Faulty brakes are one of the most dangerous winter faults and are often an MOT failure.
You can perform a basic check by gently braking on a quiet road — the car should stop promptly and in a straight line. If the car pulls to one side or the response feels delayed, have a professional inspect the brakes for worn pads, discs, or calliper issues.
Visibility and Exterior Checks
Wiper Blades and Windscreen Clarity
Good visibility is essential for winter driving. Wiper blades often harden or crack in cold weather, leaving streaks or missing patches on the windscreen. Replace them if they squeak, smear, or skip — it’s an easy and inexpensive upgrade.
Clean your windscreen inside and out to remove smears and reduce misting. A quick wipe with glass cleaner can make a big difference. Don’t forget the rear wiper if your car has one — many drivers overlook it until they really need it.
Defrosters, Heaters and Demisters
Your heating and ventilation system plays a big role in winter safety. Make sure your front and rear demisters are working properly and clear condensation quickly. If the fan is weak or only works on certain settings, have it checked before the cold weather sets in.
A fogged-up windscreen can delay you in the mornings or become a major hazard if it happens while driving. Keep vents clear of dust, and check that warm air reaches all necessary areas when the heater is on.
Lights, Reflectors and Number Plates
Shorter days mean you'll rely on your lights more often — and they must all be fully functional. Check every bulb: headlights (dipped and full beam), indicators, fog lights, brake lights, reverse lights, and number plate lights.
Also ensure that reflectors are clean and visible, especially on the rear of the vehicle. Wipe lights and number plates regularly to keep them visible — dirty or obscured plates can result in a fine.
Emergency Prep and What to Keep in the Car
Must-Have Winter Emergency Kit Items
Breaking down in freezing weather is more than inconvenient — it can be dangerous. Keep a winter emergency kit in your boot so you're ready for unexpected delays. Essentials include:
- Ice scraper and de-icer
- Warm blanket or coat
- Torch and spare batteries
- Phone charger or power bank
- Non-perishable snacks and water
- Jump leads and a tow rope
- Warning triangle and hi-vis vest
Having these items can turn a stressful situation into a manageable one — especially if you're travelling on rural roads or during extreme conditions.
Planning for Delays and Unexpected Conditions
Winter travel requires flexibility. Before setting off, check the weather forecast, traffic reports and road conditions. If severe weather is expected, consider delaying your journey or using public transport.
Allow extra time to de-ice your car, warm up the engine if needed, and drive more slowly. Make sure your mobile phone is charged and someone knows your planned route and estimated arrival time.
Final Tips for Safer Winter Driving
Keep Your Fuel Tank Topped Up
In winter, it’s wise to keep your fuel tank at least half full at all times. This reduces condensation inside the tank and ensures you have enough fuel to keep the engine running (and heater working) if you get stuck or face long delays.
For electric vehicles, plan ahead for charging. Cold weather can reduce battery range, so factor in extra time and consider using pre-conditioning features to warm the cabin while still plugged in.
Adapt Driving Habits to Seasonal Conditions
Even with the best preparation, winter roads require extra caution. Slow down, leave larger gaps between vehicles, and brake gently to avoid skidding. Use higher gears when setting off in snow, and avoid sudden movements that could unsettle the car.
Remember: the most important part of winter driving isn’t your car — it’s your mindset. Stay alert, be patient, and don’t take risks when conditions are uncertain. Getting there safely is always more important than getting there quickly.
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About Jordans Godalming
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