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Winter car checks: tyres, battery, screenwash and lights

Four quick checks before the cold sets in, plus the kit worth keeping in the boot.

3 min read · UK guidance · Last reviewed September 2026

Best car emergency and breakdown kits for UK driversBudget vs complete kits, what to check for, and when a jump starter is worth adding.

Tyres

Check the tread depth and pressures, including the spare if you have one. The legal minimum tread in the UK is 1.6mm across the central three-quarters of the tyre, but more grip helps in wet and icy conditions.

Battery

Cold weather is hard on batteries. If the engine is slow to turn over, get the battery tested before winter. Flat batteries are a common reason to be stuck, so a charged jump starter in the boot is worth considering.

Screenwash and windows

Top up with a winter screenwash rather than plain water, which can freeze. Before setting off, clear ice and snow from every window, the mirrors and the lights.

Lights

Walk round the car and check every light works and is clean, including indicators, brake lights and fog lights.

Kit in the boot

Keep a hi-vis vest in the door pocket, plus warmth for everyone who travels with you, water, a torch and a phone charger. Our car kit guide compares budget and fuller kits.

Recommended gear for this guide

Boot essentials for a winter breakdown:

See the full Vehicle Emergency Pack

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