A used campervan gives you two things to inspect: the vehicle underneath and the living conversion inside it. Either can hide an expensive fault, so this checklist starts with the paperwork before moving through the van itself.

A smart-looking conversion can distract you from rust, poor servicing or worn running gear. Equally, a mechanically sound van can still have water ingress, questionable wiring or habitation equipment that no longer works.

The easiest way to avoid missing something is to work through the van in a set order.

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Before you travel to see it

Do as much as you can before spending half a day driving to a viewing.

Ask the seller for the registration number, make/model and enough information to check the vehicle properly. GOV.UK’s used-vehicle checks recommend checking the details against DVLA information, checking the MOT history and checking for safety recalls before you buy.

Look through the MOT history rather than only checking that it currently has an MOT. Repeated corrosion advisories, tyres appearing year after year, mileage oddities or the same defect returning can tell you more than a fresh certificate.

Also check that your driving licence covers the campervan’s plated maximum authorised mass (MAM). GOV.UK’s motorhome guidance says a motorhome between 3.5 and 7.5 tonnes MAM needs category C1, while one over 7.5 tonnes needs category C. Check the actual entitlement shown on your licence before committing to a heavier van.

Ask whether the V5C, service invoices and any paperwork for the conversion or fitted equipment are present. Do not rely on “full service history” as a phrase – ask what paperwork actually exists.

Useful questions before you travel:

• How long have you owned it and why are you selling?
• When was the base vehicle last serviced?
• Has it ever had damp or water ingress?
• What currently does not work?
• When were the tyres fitted?
• Has the timing belt/chain or any model-specific major service item been done when required?
• Is there documentation for the camper conversion, electrics, heater, gas installation or habitation checks?
• Has it been weighed since the conversion was finished?

If the answers are vague before you have even arrived, bear that in mind.

The first 10 minutes: is it worth carrying on?

Before getting emotionally attached to the interior, stop and look at the whole van.

Open the door and notice the smell. A heavy musty smell, obvious mould, wet carpet, fresh staining or a lot of air freshener deserves investigation.

Walk around slowly. Look at panel gaps, doors, wheel arches, sills, jacking points and the lower edges of doors. Crouch down and look underneath for corrosion, fluid leaks, damaged tanks or evidence that the van has hit something.

Look up as well. Rooflights, vents, awnings, solar cable entries and conversion windows all involve holes or fixings in the body. Poor sealant and hurried repairs are worth questioning.

Then look at the seller as much as the van. Someone who is happy for you to take your time, operate the equipment and inspect awkward areas gives you far more confidence than someone trying to hurry the viewing.

If the first ten minutes reveal serious corrosion, obvious water damage, identity problems or a seller who will not allow sensible checks, you do not have to complete the rest of the list.

Paperwork and vehicle identity

At the viewing, check the V5C and make sure the details match the vehicle. GOV.UK also advises checking the VIN and engine details against the log book.

Check the registration, VIN plate and any stamped VIN location you can reasonably see. Make sure the make/model, fuel type and other details make sense for the van in front of you.

For a converted camper, also look at how the vehicle is described on the V5C. Do not assume the wording on the log book proves the quality or legality of the conversion; it is simply one piece of the paperwork.

A paid vehicle-history/provenance check can also be sensible on an expensive purchase, particularly to look for recorded finance, write-off or theft history.

Bodywork, rust and the underside

Rust can turn a cheap camper into an expensive one very quickly.

Pay particular attention to:

• wheel arches;
• sills and jacking points;
• bottoms of doors;
• chassis and subframe areas you can see safely;
• around windscreens and conversion windows;
• roof seams, rooflights and pop-top openings;
• underneath around tanks, steps and added brackets.

Fresh underseal is not automatically bad, but ask what was underneath before it was applied.

Look for mismatched paint, overspray, uneven panel gaps and ripples in bodywork that might indicate previous repairs.

A torch is one of the most useful things you can take to a viewing.

Damp and water ingress

Do not confuse condensation with a leaking campervan. Condensation can occur in any occupied van, while water ingress usually points to a fault that needs fixing. Our campervan condensation guide explains that difference in more detail.

Use your nose and your hands first. Check around windows, rooflights, doors, the bottom corners of walls, inside cupboards and under mattresses. Look for staining, swollen board, peeling wall covering, soft areas and previous sealant repairs.

A small moisture meter can be useful for comparing suspicious areas with apparently dry ones, but do not treat one reading as a professional verdict.

A current option is the Dryzone Moisture Meter Detector. It is compact enough to take to viewings and can help identify areas worth investigating further.

If you use a pin-type meter, ask the owner before putting the pins into a finished surface. More importantly, if you are buying an expensive coachbuilt or converted van and damp is a concern, arrange a proper habitation/damp inspection rather than relying on a handheld meter.

Tyres, wheels, brakes and suspension clues

Do not only look at tread depth.

Check all four tyres for:

• uneven wear;
• cracking or perishing;
• sidewall damage;
• mismatched tyres;
• suspiciously low pressure;
• age, where you can read the date code.

Campervans can spend long periods standing and may carry a lot of weight, so an old tyre can look respectable while still deserving replacement.

A combined gauge is handy at a viewing. The MICHELIN Digital Tyre Pressure and Tread Depth Gauge lets you check both without carrying two tools.

Use the correct pressure information for the actual vehicle, tyres and conversion rather than copying somebody else’s campervan pressures.

While you are down by the wheels, look for leaking dampers, broken springs where visible, damaged wheels and obvious uneven stance.

Ask for a cold start

If possible, ask the seller not to warm the van up before you arrive.

A cold engine can reveal starting problems, smoke, noisy belts, rattles and warning lights that disappear once everything is warm.

Under the bonnet, you are looking for obvious problems rather than pretending to be a mechanic. Check fluid levels where appropriate, signs of leaks, damaged hoses, oil contamination and evidence of neglected servicing.

Model-specific research matters. Before viewing, search the exact engine and model for known service items and recurring faults. A generic campervan checklist cannot tell you everything about a particular Transit, Boxer, Ducato, Transporter or Master.

If you are not confident mechanically, paying for an independent inspection is one of the more sensible costs in the whole buying process.

Inspect the conversion, not just the van

This is where a campervan differs from an ordinary used vehicle.

Open every cupboard. Pull the bed out. Sit on the seats. Try catches, blinds, roof mechanisms and table fittings. Look behind removable cushions and inside lockers.

If you will carry passengers in the back, do not assume a bench seat is automatically a suitable travelling seat. Check that there are appropriate belted travel seats for the people you intend to carry, and ask what evidence exists for any added seat and seat-belt mountings. If that is unclear, get the installation assessed before buying.

Furniture should feel properly fixed rather than simply decorative. Look for sharp edges, loose panels, cracked fixings and anything that has been screwed into very thin trim.

Pay special attention to any hole cut through the original vehicle: windows, roof vents, pop-tops, heater exhausts, water fillers, mains hook-up inlets and cable entries.

If you are considering a converted minibus, our minibus camper conversion guide covers some of the extra layout and conversion issues to think about.

Check the 12V electrical system

Ask the seller to demonstrate it rather than accepting “everything works”.

Check:

• interior lights;
• water pump;
• USB outlets;
• 12V sockets;
• control panel;
• fridge on the appropriate supply;
• heater controls;
• leisure-battery charging;
• solar display/controller if fitted.

Look at the visible wiring. Neat cable runs, sensible fusing and labelled circuits are encouraging. Loose wires, twisted joints, domestic extension leads hidden behind furniture or unexplained switches are not.

Our campervan electrics guide explains the basics of leisure batteries, split charging and DC-DC charging if you need some background before the viewing.

Check mains hook-up without dismantling anything

If the campervan has 230V hook-up, ask for it to be demonstrated where that can be done safely.

You can confirm that the normal outlets and fitted equipment operate, but a viewing is not the time to open consumer units or start probing mains wiring.

If the installation looks DIY, undocumented or questionable, have it inspected by someone competent before relying on it.

Water system

Put water through the system rather than only switching the pump on.

Run each tap. Listen to the pump. Check underneath and inside cupboards while the water is running. Then look for drips afterwards.

Check the fresh-water container or tank, filler, hoses, waste-water arrangement and any underslung tanks you can safely see.

Smell the water system and inspect accessible containers. Long-stored water and dirty tanks can be cleaned; cracked tanks, poor plumbing and hidden leaks are a different proposition.

Fridge, heater, hob and toilet

Ask the seller to demonstrate the fitted equipment.

For a fridge, check whichever power modes are actually installed. For a diesel heater, let it run long enough to see that it starts and settles properly rather than merely hearing the fan for ten seconds.

Operate the toilet mechanism if there is one and check for cracked seals, unpleasant leakage or missing cassettes/components.

Check that roof vents and other permanent ventilation have not been blocked.

Gas deserves respect

If the campervan has LPG, look for tidy installation, secure cylinder storage and sensible ventilation, but do not dismantle fittings or perform improvised leak tests.

Ask for evidence of professional inspection or relevant habitation-service records. If there is no trustworthy evidence and you intend to use the gas system, arrange a competent inspection before relying on it.

A cooker flame lighting successfully does not prove the entire installation is safe.

Payload: do not forget what the conversion weighs

A campervan can look perfect and still have very little useful payload left.

Find the vehicle’s plated weights and ask whether it has been weighed in its finished converted condition. Remember that passengers, water, gas, food, bikes, awnings and everything in the cupboards all add weight.

Check the axle limits as well as the overall maximum weight. A van can still be within its total limit while overloading one axle, particularly if heavy items such as bikes, water tanks or storage are concentrated at the rear.

If the figures are close or unclear, a weighbridge ticket is far more useful than guesswork. Ideally, get separate axle readings as well as the total weight.

This matters particularly if you intend to add batteries, solar equipment, bike racks or carry several people.

The test drive

Drive it far enough to get properly warm.

Try town speeds, a faster road if practical, some uneven surfaces and a proper reverse/parking manoeuvre.

Pay attention to:

• clutch take-up or automatic gearbox behaviour;
• clean gear changes;
• steering wandering or vibration;
• braking in a straight line;
• wheel-bearing or suspension noises;
• engine temperature;
• dashboard warning lights;
• rattles from the conversion;
• wind or water leaks around conversion openings.

After the drive, look underneath again for fresh drips.

Do not let “they all drive like vans” explain away something that feels wrong.

What I would take to a viewing

Keep it simple:

• this checklist on your phone or printed;
• a bright torch;
• gloves;
• a small mirror;
• phone/camera;
• notepad and pen;
• a moisture meter if damp is a concern;
• tyre pressure/tread gauge;
• paper towel for checking suspicious fluid or water.

You do not need a toolbox full of diagnostic equipment to decide whether a van deserves a professional inspection.

Walk-away warning signs

No single cosmetic fault should necessarily kill a deal, but combinations matter.

I would become very cautious about:

• identity or V5C details that do not match;
• seller unwilling to let you inspect or test things;
• serious corrosion;
• strong musty smell plus staining or soft interior panels;
• unexplained fresh sealant everywhere;
• repeated MOT corrosion or safety advisories with no evidence of repair;
• warning lights or obvious mechanical noises;
• unsafe-looking wiring;
• gas installation with no confidence-inspiring history;
• major equipment the seller refuses to demonstrate;
• too little useful payload for the way you intend to use it;
• a price that only makes sense if you ignore a long list of repairs.

Sometimes the cheapest repair is the campervan you did not buy.

Used campervan viewing checklist

Want to take the checklist with you? Download the printable Used Campervan Viewing Checklist (PDF).

Before you leave home

• ☐ Registration number checked against DVLA information
• ☐ MOT history read, not just expiry date checked
• ☐ Safety recalls checked
• ☐ Driving-licence entitlement checked against the vehicle’s plated MAM
• ☐ Seller has answered basic service/damp/equipment questions
• ☐ Model/engine-specific faults researched
• ☐ Insurance quote checked if the vehicle is unusual or heavily modified

Paperwork

• ☐ V5C present and details match
• ☐ VIN matches the vehicle and paperwork
• ☐ Service invoices/history examined
• ☐ Conversion/equipment paperwork examined
• ☐ Habitation/damp records examined where relevant

Outside

• ☐ Rust checked around arches, sills, doors and underside
• ☐ Signs of accident repair considered
• ☐ Rooflights, windows and conversion cut-outs inspected
• ☐ Sealant condition checked
• ☐ Tyres checked for tread, age, cracking and uneven wear
• ☐ Obvious fluid leaks checked

Inside

• ☐ Musty smells, stains and soft areas investigated
• ☐ Cupboards and hidden corners inspected
• ☐ Bed, seats, tables and catches operated
• ☐ Travel seats and seat-belt mountings checked if rear passengers will be carried
• ☐ Visible conversion fixings/wiring look sound
• ☐ Ventilation openings are present and unobstructed

Systems

• ☐ 12V lights and sockets tested
• ☐ Leisure-battery charging demonstrated
• ☐ Solar system demonstrated if fitted
• ☐ 230V hook-up demonstrated safely if fitted
• ☐ Water pump and every tap tested
• ☐ Fridge demonstrated
• ☐ Heater demonstrated
• ☐ Toilet checked
• ☐ Gas paperwork/inspection evidence considered

Weight and road test

• ☐ Plated overall and axle weight limits found
• ☐ Finished conversion weight/payload understood
• ☐ Axle loads considered if the van carries heavy rear-mounted or concentrated loads
• ☐ Cold start observed if possible
• ☐ Proper test drive completed
• ☐ Steering, brakes, clutch/gearbox and temperature feel normal
• ☐ Fresh leaks checked after driving

Before paying

• ☐ Major doubts independently inspected
• ☐ Repair/service budget left over after purchase
• ☐ You are buying the van, not just falling for the conversion

Final thought

A good used campervan is one whose condition, history, conversion and layout all make sense together. Age, mileage and a polished interior matter much less if the fundamentals are wrong.

If you are still deciding whether campervan ownership is right for you, start with Should I Buy a Campervan?. If the bigger question is whether to convert your own van or buy one already finished, see Build a Camper Van – or Buy One?.

Take your time. View more than one. And if something does not add up, there will always be another van.