🔧 Bonnet Check
What you MUST know for your driving test
Engine Bay Overview
What You MUST Know
They want to see that you can identify each component and explain its purpose + how to check levels. You DO NOT need to touch anything.
1. Engine Oil
📍 Location: Dipstick (usually yellow/orange)
✅ Check: Pull out, wipe, dip again, level is between MIN and MAX. Ensure engine is cold and car is not on a hill.
💡 Why: Lubricates engine
2. Coolant
📍 Location: Translucent tank with coloured liquid
✅ Check: Level between MIN and MAX when engine is cold
💡 Why: Stops engine overheating
3. Brake Fluid
📍 Location: Small reservoir near the back of engine bay. (Usually close to brake pedal)
✅ Check: Level between MIN and MAX
💡 Why: Lets brakes work properly
4. Windshield Washer Fluid
📍 Location: Blue cap usually
✅ Check: Visual check / top up as required
💡 Why: Clear visibility
5. Engine Coolant Fan / Belts
📍 (if asked)
✅ Check: Belts shouldn't be torn or loose
💡 Trick: They rarely ask this
🔥 Tips & Tricks (What Testers Actually Like)
- Say what you see. If you forget, just point and describe its job.
- Confidence > perfection. They don't need exact colour or part names.
- Memorise the "Big 3": Oil, Coolant, Brake Fluid — these matter most.
- Washer fluid is an easy win — don't overlook it.
- Don't touch a hot engine. If they ask, say: "You only check levels when the engine is cold."