Tyres, lights and windows: A quick visual check for damage, correct lights and a clean windscreen only takes a minute and can catch a fault before you set off.
Tyre pressure and tread: Check monthly with a pressure gauge, using the pressure listed in your handbook, not the maximum figure printed on the tyre itself. Use a tread depth gauge to confirm at least 1.6mm of tread across the central three-quarters of each tyre, all the way round, including your spare Engine oil: Check the level with your dipstick. Follow your handbook for the correct oil specification, using the wrong oil can affect performance and even your warranty. Coolant: Keep your water-to-antifreeze ratio at the correct level and listen for the cooling fan working properly. Wipers and washer fluid: Keep washer fluid topped up and replace worn wiper blades, poor visibility is a safety issue, not just cosmetic. Lights: Headlights, taillights and indicators must all work properly, by law. Test them regularly. Dashboard warnings: Learn what each light means so you know exactly what action to take.
Servicing: Check your handbook for how often your car should be serviced, usually every 12,000 miles or once a year. If you notice anything unusual before then, don't wait for the scheduled service.