Pre-Journey Car Checks: What to Inspect Before a Long Trip

Summary

• FLOWER checks: Fuel, Lights, Oil, Water, Electrics, Rubber. The easy way to remember what to check.
• Tyre condition: Check pressure and tread depth before any long journey.
• Plan ahead: Check your route for roadworks, fuel stops, and services. Pack an emergency kit.

Long journeys are when cars work hardest. Motorway miles at sustained speeds. Full loads of passengers and luggage. Hours of continuous driving.

A quick check before you leave can prevent a breakdown hundreds of miles from home. It takes ten minutes. And it could save your holiday.

Here's exactly what to check before any long trip.

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The FLOWER Check: An Easy Way to Remember

FLOWER is a simple acronym that covers the essential checks:

• F – Fuel
• L – Lights
• O – Oil
• W – Water
• E – Electrics
• R – Rubber (tyres)

Let's go through each one in detail.

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Fuel: Start with a Full Tank

This seems obvious. But running low on fuel is one of the top reasons for breakdown callouts.

Before You Leave

• Fill up the day before or on your way out
• Know your car's range on a full tank
• Plan fuel stops for longer journeys

Motorway Fuel Tips

Motorway services are expensive. Sometimes 20-30p per litre more than town stations. Plan to fill up before joining the motorway, or exit briefly to find cheaper fuel.

Use our fuel finder to locate the cheapest fuel along your route.

Tip: Don't let the tank drop below a quarter. Modern fuel pumps are cooled by the fuel itself. Running very low can cause overheating and premature failure.

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Lights: Check Every Bulb

A blown bulb is an MOT failure and a potential police stop. More importantly, it makes you harder to see.

How to Check

1. Turn on your headlights (both dipped and full beam)
2. Walk around the car and check each light
3. Ask someone to stand behind while you press the brakes
4. Check indicators on both sides
5. Don't forget reversing lights and fog lights

If a Bulb Is Out

Replace it before you go. Most bulbs are easy to change yourself. Check your car's manual for the correct bulb type. See our headlight guide for more details.

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Oil: The Lifeblood of Your Engine

Low oil can cause serious engine damage. Especially on long motorway runs where the engine works harder.

How to Check Oil Level

1. Park on level ground
2. Wait a few minutes for oil to settle (if engine was running)
3. Pull out the dipstick, wipe clean, reinsert fully
4. Pull out again and check the level
5. Oil should be between the minimum and maximum marks

Top Up If Needed

Keep a litre of the correct oil in your boot. Your car's manual tells you the right grade. Adding a little is fine. But if the car is using a lot of oil, get it checked by a mechanic before your trip.

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Water: Coolant and Washer Fluid

Engine Coolant

Coolant keeps your engine at the right temperature. Low coolant can cause overheating, especially in traffic jams or on hot days.

• Check the expansion tank with the engine cold
• Level should be between min and max marks
• If low, top up with the correct coolant mix (not just water)

Warning: Never open the coolant cap when the engine is hot. The system is pressurised and can spray boiling liquid.

For more details, see our coolant guide.

Windscreen Washer Fluid

Long motorway drives throw up a lot of dirt and bugs. You'll use more washer fluid than usual.

• Top up the washer bottle before you leave
• Use proper screenwash, not just water (it cleans better and won't freeze)
• Carry a small bottle of spare washer fluid

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Electrics: Battery and Warning Lights

Battery Check

Car batteries can fail without much warning. A weak battery might start the car fine at home but struggle after a long stop in cold weather.

Signs of a weak battery:

• Slow cranking when starting
• Dim headlights at idle
• Battery warning light flickering
• Battery over 4-5 years old

If in doubt, get the battery tested. Many garages and car parts shops offer free battery checks. See our battery guide for more information.

Dashboard Warning Lights

Start the car and check the dashboard. All warning lights should illuminate briefly, then go out. Any light that stays on needs investigating before your trip.

Don't ignore warning lights. Even a seemingly minor issue can become serious on a long journey. Our warning lights guide explains what each light means.

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Rubber: Tyres, Wipers, and Belts

Tyres: The Most Important Check

Your tyres are the only contact between your car and the road. Check them carefully.

Tyre pressure:

• Check when cold (before driving)
• Use the pressures in your car's manual or door frame sticker
• Increase pressure if carrying a full load (check manual for guidance)
• Don't forget the spare tyre

Tyre condition:

• Minimum legal tread depth is 1.6mm across the central three-quarters
• Use the 20p test: if the outer rim is visible, tread is too low
• Check for cuts, bulges, or objects stuck in the tyre
• Look for uneven wear (could indicate alignment issues)

Worn tyres on a motorway at 70mph are dangerous. Replace them before your trip if they're borderline.

Wiper Blades

Motorway driving in rain with poor wipers is miserable and dangerous. Check the blades for:

• Cracks or splits in the rubber
• Smearing or streaking when used
• Missing sections

Replacement blades are cheap and easy to fit. See our wiper blade guide.

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Documents and Essentials

Before a long trip, make sure you have:

• Driving licence: Carry it with you
• Insurance documents: Check your policy is valid and covers where you're going
• MOT: Confirm your MOT is in date (check at MOT check)
• Breakdown cover details: Know your provider and policy number

If travelling abroad, you'll need additional documents. See our European driving checklist.

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What to Pack for Emergencies

Hope for the best, prepare for the worst. Pack these items:

Essential Items

• Phone charger (ideally a 12V car charger)
• Warning triangle
• High-visibility vest (one for each passenger)
• Torch with working batteries
• First aid kit
• Blanket (in case you're stranded in cold weather)

Useful Extras

• Jump leads or portable jump starter
• Bottled water
• Snacks
• Paper maps (phone batteries die, signals fail)
• Umbrella
• Spare bulbs and fuses

Learn more about emergency preparedness in our breakdown guide.

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Plan Your Route

A bit of planning prevents stress on the day.

Check for Roadworks

Major roadworks can add hours to your journey. Check:

• Highways England traffic info
• Google Maps or Waze for real-time traffic
• BBC travel news

Plan Rest Stops

Take a break every 2 hours. Fatigue is a major cause of accidents. Know where services are along your route.

See our motorway services guide for tips on making the most of your stops.

Know Your Fuel Range

Don't assume you'll find a petrol station when you need one. Rural areas and long motorway stretches can have gaps of 30+ miles between stations.

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Quick Pre-Journey Checklist

Print this out or screenshot it for your next trip:

• ✅ Fuel tank full (or first stop planned)
• ✅ All lights working
• ✅ Oil level between min and max
• ✅ Coolant level OK
• ✅ Washer fluid topped up
• ✅ Battery in good condition
• ✅ No warning lights on dashboard
• ✅ Tyre pressures correct (including spare)
• ✅ Tyre tread above 1.6mm (ideally 3mm+)
• ✅ Wiper blades in good condition
• ✅ Driving licence and insurance accessible
• ✅ MOT in date
• ✅ Breakdown cover details known
• ✅ Emergency kit packed
• ✅ Route planned with rest stops

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Final Thoughts

Pre-journey checks take ten minutes. Breaking down 200 miles from home takes all day.

Most breakdowns are preventable. Low oil, bald tyres, empty fuel tanks, flat batteries. Simple things that a quick check would catch.

Get in the habit of checking your car before long journeys. It's a small investment of time that pays off in peace of mind. And it might just save your holiday.

Safe travels!

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