Choosing the right base van can save you thousands of pounds and make the conversion much easier.
There is no single “best” van for everyone. The right choice depends on how you plan to use the camper, how much space you need, what layout you want, your budget and how much weight the finished conversion will carry.
A compact van can make a brilliant weekend camper, while a larger panel van gives you much more freedom for fixed beds, bathrooms, bigger kitchens and off-grid equipment.
Start with how you will use the van
Before choosing a make or model, think about what you actually want the finished camper to do.
A van for occasional weekends away has very different requirements from one intended for long touring holidays or full-time travel.
Ask yourself:
- How many people need to travel and sleep in the van?
- Do you want standing room inside?
- Do you need a fixed bed or are you happy converting seating into a bed each night?
- Will you need a toilet or shower?
- How much kitchen and storage space do you want?
- Will you spend most of your time on campsites or travelling off-grid?
- Do you need the van to work as an everyday vehicle as well as a camper?
Answering those questions first makes choosing the right size of van much easier.
SWB or LWB?
Wheelbase is one of the first decisions to make.
Short wheelbase
A short-wheelbase van is generally easier to park, manoeuvre and use as an everyday vehicle.
It can be ideal for:
- Day vans
- Weekend campers
- Smaller families
- People who regularly drive in towns and cities
- Simple layouts with a rock-and-roll bed or removable furniture
The trade-off is less interior space, so storage and layout design become more important.
Long wheelbase
A long-wheelbase van gives you more usable floor space and usually makes it easier to include additional furniture, storage or larger sleeping arrangements.
It can be better for:
- Longer trips
- Families
- More elaborate kitchens
- Extra storage
- Larger electrical systems
- People who simply want more room to live inside the van
The downside is that the vehicle can be harder to park and may cost slightly more to run.
Low roof or high roof?
Roof height matters just as much as length.
A low-roof van is easier to drive, park and sometimes store, but you may need a pop-top roof if you want standing room.
A high-roof panel van gives you permanent standing height and makes it easier to create a more traditional motorhome-style layout.
Extra-high roofs can provide even more headroom and overhead storage, but they also increase overall vehicle height.
Think about payload before you buy
Payload is one of the most important things to check before converting a van.
A camper conversion can add a surprising amount of weight.
That can include:
- Insulation
- Wall and ceiling lining
- Furniture
- Beds
- Water tanks
- Batteries
- Solar equipment
- Heating
- Cooking equipment
- Fridge
- Gas bottles
- Passengers
- Luggage
- Food and water
The finished van must remain within its legal maximum authorised mass.
A heavy conversion in a van with limited payload can leave very little capacity for passengers and luggage.
Before buying a base van, check its payload and think realistically about how heavy your planned conversion will be.
Popular base vans for camper conversions in the UK
These are some of the most common vans used for camper conversions in the UK.
Volkswagen Transporter
The VW Transporter is one of the best-known campervan base vehicles.
It is popular because it has:
- A huge campervan community
- Excellent availability of conversion parts
- Plenty of specialist converters
- Good driving manners
- Strong resale demand
- A wide choice of pop-top roofs, furniture and accessories
It is particularly well suited to compact campers and everyday vehicles that also need to work as a camper at weekends.
The main downside is price. Transporters often command a premium compared with similar-sized vans.
Ford Transit Custom
The Transit Custom is one of the strongest alternatives to the Transporter.
It is widely available, drives well and has a large choice of conversion equipment.
Advantages include:
- Good availability
- Plenty of replacement parts
- Strong dealer and garage support
- Wide range of conversion products
- Competitive purchase prices
- Good choice of wheelbases and specifications
For many buyers, it offers a very good balance between purchase price, practicality and availability of conversion parts.
Fiat Ducato, Peugeot Boxer and Citroën Relay
These vans share the same basic body design and are extremely popular for larger camper and motorhome conversions.
One of their biggest advantages is their relatively square interior shape.
That makes them efficient for fitting:
- Fixed beds
- Kitchens
- Bathrooms
- Storage
- Large electrical systems
- Permanent living areas
Their width can also make transverse beds possible in some layouts, depending on the user’s height and the finished interior dimensions.
They are a strong choice for larger touring campers.
Mercedes Sprinter
The Mercedes Sprinter is a popular choice for larger and more premium conversions.
It offers plenty of interior space and is available in numerous lengths and roof heights.
It can work particularly well for:
- Full-size camper builds
- Fixed beds
- Bathrooms
- Large water systems
- Off-grid electrical systems
- Long-term touring
Sprinters can be more expensive to buy and maintain than some alternatives, so condition and service history matter.
Volkswagen Crafter and MAN TGE
The VW Crafter and MAN TGE are closely related and are increasingly popular for larger camper conversions.
They offer:
- Good interior space
- Modern driving characteristics
- Several lengths and roof heights
- Strong potential for premium conversions
- Plenty of room for large batteries, water systems and storage
They are particularly suited to people wanting something larger than a Transporter or Transit Custom but still relatively modern and easy to drive.
Small, medium or large van?
The size category you choose will strongly affect the finished layout.
Small and medium vans
These are ideal for:
- Day vans
- Weekend campers
- Simple touring layouts
- Everyday driving
- People who want something easy to park
You will normally have to compromise more on storage, standing room and permanent sleeping arrangements.
Large panel vans
Large vans give you much more freedom with the interior design.
They are better suited to:
- Fixed beds
- Separate kitchen areas
- Larger fridges
- Bigger water tanks
- More storage
- Full off-grid electrical systems
- Longer trips
Extra-long and high-roof vans
These are best suited to people who want maximum interior space.
They can make room for:
- Permanent beds
- Large garages or storage areas
- Wet rooms
- Full kitchens
- Large electrical installations
- Larger fresh and waste water tanks
The trade-off is greater vehicle length, height and weight.
Parts and specialist support matter
A common van can often be easier and cheaper to convert than a rare one.
Popular vans benefit from a much larger choice of:
- Windows
- Pop-top roofs
- Furniture kits
- Swivel seat bases
- Roof racks
- Heating systems
- Electrical accessories
- Replacement trim
- Specialist converters
They are also usually easier to service because parts and technical knowledge are widely available.
That does not mean an unusual van cannot make a good camper, but it is worth checking what conversion parts are available before buying one.
What to check before buying a base van
The condition of the van matters more than the badge on the front.
A cheap van that needs major repairs can quickly become an expensive project.
Before buying, check:
Rust and structural condition
Look underneath the vehicle as well as around visible bodywork.
Pay attention to:
- Wheel arches
- Sills
- Chassis areas
- Door bottoms
- Floor
- Roof seams
- Previous repairs
Rust repairs become much harder once the van has been converted.
Service history
A well-maintained higher-mileage van can be a better buy than a lower-mileage vehicle with poor maintenance.
Check for evidence of regular servicing and important scheduled maintenance.
Leaks
Look for signs of water ingress around:
- Doors
- Roof seams
- Windscreens
- Rear doors
- Existing roof vents
- Previous modifications
Water leaks can damage insulation, flooring and furniture later.
Tyre wear
Uneven tyre wear can indicate alignment, suspension or steering problems.
It is worth understanding the cause rather than simply fitting new tyres.
Electrical problems
Modern vans contain increasingly complex electrical systems.
Warning lights, intermittent faults and electrical problems can become expensive once a conversion has been built around them.
Make sure any unexplained dashboard warnings or electrical faults are properly investigated before buying.
Think about insurance before buying
It is worth checking insurance before committing to a base vehicle.
Some insurers have different requirements for converted vans, self-build campers or vehicles undergoing conversion.
Tell the insurer what the vehicle will be used for and what modifications are planned.
Do not assume that a standard commercial van policy will automatically cover the finished camper conversion.
Automatic or manual?
This is mainly personal preference, but it can affect availability and price.
Automatic vans are increasingly popular for touring and long-distance driving.
Manual versions can sometimes be cheaper to buy and may offer more choice on the used market.
Whichever you choose, condition and maintenance history matter more than transmission type alone.
Diesel or electric?
Most camper conversions in the UK are still based on diesel vans, particularly larger vehicles.
Diesel remains practical for long-distance touring because of range, refuelling availability and the wide choice of used vehicles.
Electric vans can work for some camper uses, particularly shorter journeys, but payload, charging access and range need careful consideration once the additional weight of a conversion is added.
New or used base van?
A newer van can reduce the risk of repair bills, but it also increases the initial cost of the project.
Buying used can leave more of your budget available for the actual conversion.
A good used van with strong service history can make an excellent base vehicle.
The important thing is to buy on condition rather than age alone.
Which van is best for a weekend camper?
For weekend use and occasional touring, medium vans such as the VW Transporter or Ford Transit Custom are popular choices.
They are easier to park and can still accommodate:
- Seating
- A bed
- Basic cooking facilities
- Storage
- Leisure electrics
- A pop-top roof if required
They also work well for owners who need the vehicle for everyday use.
Which van is best for a full-size camper?
For larger conversions, vehicles such as the Fiat Ducato, Peugeot Boxer, Citroën Relay, Mercedes Sprinter, VW Crafter and MAN TGE provide much more interior space.
These vans are better suited to layouts including:
- Fixed beds
- Full kitchens
- Large fridges
- Toilets and showers
- Large water tanks
- Extensive storage
- Solar and large battery systems
Do not choose the van before choosing the layout
One of the easiest mistakes to make is buying a van first and planning the conversion afterwards.
It is better to have a rough idea of your preferred layout before committing to a vehicle.
Think about where you want:
- Beds
- Seats
- Kitchen
- Fridge
- Toilet
- Water tanks
- Batteries
- Storage
- Heating
You may discover that the van you originally wanted is simply too small for the layout you actually need.
Speak to converters before buying the van
If you intend to use a professional converter, it can be worth speaking to them before buying your base vehicle.
An experienced converter may be able to tell you:
- Which models they prefer working with
- Which engines or specifications to avoid
- What wheelbase suits your intended layout
- How much payload you are likely to need
- Whether a particular roof height will work
- What conversion parts are available
- Whether your budget is realistic
That advice before purchase can save a lot of money later.
So, what is the best van for a camper conversion?
There is no single winner.
For compact conversions and everyday use, the VW Transporter and Ford Transit Custom are strong choices.
For larger motorhome-style builds, the Fiat Ducato, Peugeot Boxer and Citroën Relay are popular because of their usable interior shape and space.
The Mercedes Sprinter, Volkswagen Crafter and MAN TGE are excellent choices where more space and a larger conversion are the priority.
The best van is the one that gives you enough space and payload for the layout you want, is in good mechanical condition and fits your overall conversion budget.
Find a converter experienced with your van
Once you have shortlisted your base vehicle, it is worth speaking to converters who regularly work with that model.
They can help you understand what layouts are practical, what equipment fits properly and what a realistic conversion budget looks like.