For commercial vehicles, there are 12 essential areas to check.

• Lights – check lights and indicators work correctly. Where possible check dashboard warning lights.
• Horn and steering – check that there is no excessive play in the steering and that the horn works.
• Brakes – look out for excessive travel in the brake pedal and that the parking brake works correctly.
• Washers and wipers – check that the wipers work, that wiper blades are not worn, that washer fluid is topped up, and that the washers point at the windscreen.
• Mirrors and glass – all mirrors should be properly aligned and secure. There should be a clear view and no obstructions to vision front and rear.
• Seats and seat-belts – check that seat-belts function correctly and that seats are secure.
• Battery – look for leaks and loose fittings.
• Bodywork and doors – check that all doors shut properly, that there are no sharp edges or damage and that body panels are secure.
• Loads – ensure any load is adequately secured and that door locks are effective.
• Tow bars and tail lifts – ensure the tow bar is secure and that any trailer is properly attached, with all electrical connections working correctly. For a tail lift, look for damage and ensure it is in working order.
• Tyre and wheels – the legal minimum tread depth is 1.6 mm, but it should be more for safe braking, handling, and wet weather performance. Inflate tyres to the correct pressure and look for any cuts on the sidewall. Check that wheel nuts are secure.
• Fluids, fuel, and oil – check levels for engine oil, engine coolant, brake fluid, power steering and windscreen washers. Ensure the fuel filler cap is properly fitted and look for leaks under the vehicle, including with the engine on.