Used campervan inspection checklist that actually helps

Quick Summary:

• Documentation First: Prioritise the V5C 'Body Type', service history, and weight certificates before viewing.
• Damp is the Enemy: Invest in a professional pinless damp meter; smell is not a reliable indicator of structural water ingress.
• System Stress Test: Test every appliance on all power sources (Gas, 12V, and 230V) for at least 15 minutes.
• Safety Criticals: Check tyre date codes (DOT) and gas drop-out vents; campervan tyres often perish before the tread wears out.
• Weight Awareness: Ensure the payload is sufficient for your needs using a Motorhome Weight Checker.

Buying a used campervan is a smart way to get more features for your budget, and often, previous owners have already ironed out the initial 'conversion bugs'. However, without a systematic approach, you risk inheriting expensive mechanical or structural headaches. In 2026, with the rise of complex lithium electrical systems and stricter DVLA regulations, a thorough inspection is more vital than ever.

Whether you are looking at a professional Volkswagen California or a bespoke build from Vanworx or Onyx Vans, this checklist focuses on the critical areas that impact safety, legality, and your wallet.

1. The Paperwork & Legal Audit

Before you even pick up a screwdriver or a damp meter, scrutinise the documents. Discrepancies here can affect your insurance and resale value.

• V5C Logbook: Check the 'Body Type'. While many conversions remain 'Van' or 'Panel Van' due to DVLA policy changes, ensure the VIN matches the chassis. Note that speed limits may differ if the vehicle is still classed as a N1 Goods Vehicle.
• Service History: Look for consistent intervals. A campervan often sits idle, which can lead to seized brakes or perished rubber components.
• Habitation Service: Ask for a recent habitation check report (ideally within the last 12 months). This covers gas safety, electrical integrity, and damp levels.
• Weight Certificate: For larger conversions on a 3.5t chassis, ask if it has been weighed. Use our Motorhome Weight Checker to understand your remaining payload once passengers and water are added.

2. Exterior & Chassis Inspection

Walk around the vehicle in daylight. Rain can hide paint imperfections and leaks.

• Bodywork: Look for uneven panel gaps or 'orange peel' paint texture, which suggest past accident repairs. Check for rust on wheel arches and sills, particularly on older Mercedes-Benz Sprinter or Ford Transit base vehicles.
• Tyres: Check the DOT code (four digits). If they are over 5-6 years old, they may need replacing regardless of tread depth. Look for the 'CP' (Camping) mark on the sidewall, which indicates tyres designed for higher pressures and long periods of standing.
• The Roof: Inspect seals around solar panels, aerials, and skylights. These are the most common entry points for water. If it is a pop-top, check the canvas for mould and the scissor hinges for rust.

3. The Interior & Conversion Quality

A beautiful interior can mask poor craftsmanship. You need to look behind the 'scandi-style' cladding.

• The 'Shake' Test: Open every cupboard and give the cabinetry a firm (but respectful) tug. It should be bolted to the metal 'ribs' of the van, not just screwed into ply lining.
• Damp Check: Use a moisture meter around windows, door seals, and the floor near the water tank. Any reading above 15-20% warrants further investigation. Pay close attention to the floor under the kitchen unit.
• Gas Safety: If gas is fitted, look for a gas locker that is sealed from the living area with a floor vent (drop-out vent). Check the age of the regulator and hose; hoses should generally be replaced every 5 years (BS EN 1949).

4. Electrics, Water, and Heating

Replacing a faulty diesel heater or a dead lithium battery can cost thousands. Do not take the seller's word that "it just needs a fuse."

• Electrical System: Check the control panel. Test the lights, USB ports, and fridge. If there is a solar controller, check it is actually showing a charge. Ask for the age and type of leisure battery (AGM vs Lithium).
• Water System: Run the taps. Listen for the pump—it should prime and then stop. If it keeps running, there is likely a leak or a pressure switch failure. Check the waste water (grey) tank for secure mounting.
• Heating: Fire up the heater (e.g., Webasto or Eberspacher). It may smoke slightly on startup, but it should run clear and hot within minutes. Ask when it was last serviced, as carbon buildup can cause 'lockouts'.

5. The Test Drive

Campervans carry significant permanent weight, which affects handling and braking. For more on how different vans drive, see our guide to base vehicles explained.

• Cold Start: Ensure the engine is cold when you arrive. A warm engine can hide starting issues, glow plug faults, or smoke.
• Suspension: Listen for knocks or 'clunks' over bumps, which could indicate worn bushings or overloaded springs. Many heavy campers benefit from upgraded VB-Airsuspension or heavy-duty dampers.
• Clutch & Gears: Check for 'slip' in high gears and ensure the gear change is smooth, especially in common base vehicles like the VW Transporter (check for DSG hesitation) or Ford Transit.

Frequently Asked Questions

Should I buy a van that isn't registered as a 'Motor Caravan' on the V5C?

In 2026, many modern conversions are not changed on the V5C because the DVLA's criteria are very strict. As long as your insurance company is aware of the modifications (and you have a valuation), it is generally acceptable. However, remember that if it is classed as a 'Van', you must adhere to lower van speed limits (60mph on dual carriageways, 50mph on single carriageways).

How do I check for damp without a meter?

Look for 'pinking' or staining on wallboards, a musty smell, or soft spots on the floor. However, a professional damp meter is the only way to be certain. We recommend using our Campervan Conversion Checker to track your findings during a viewing.

What is a 'Habitation Check' and do I need one?

A habitation check is like an MOT for the living area. It tests for gas leaks, electrical safety (230V and 12V), and water ingress. Even on a DIY build, a professional gas safety certificate (Landlord's certificate or equivalent) is highly recommended for peace of mind.

Ready to start your search? Browse used campervans for sale or explore specific brands like Volkswagen and Kaktus Adventure Vans.