A bespoke Mercedes Sprinter campervan conversion built around our STORM 5 layout
With a second sleeping area in the pop-top roof, a permanent rear bed, hydraulic levelling, air conditioning and a comprehensive off-grid electrical system. This build combines the practicality of a long-wheelbase Sprinter with a specification designed for extended touring. The layout provides dedicated sleeping, cooking, seating and bathroom facilities without relying on converting the main living area into a bed each night.
A Mercedes Sprinter Campervan Conversion built around the way it's used
Our STORM 5 layout provides the foundation for this build, but the specification was developed around the owner's requirements.
The principal additions include an ATEK pop-top roof, AL-KO hydraulic levelling system, roof-mounted air conditioning, upgraded sleeping arrangements, Starlink connectivity and a number of practical improvements to storage and everyday usability.
Rather than adding equipment without considering its impact, the objective was to create a well-integrated campervan where the interior layout, electrical system, water storage and exterior equipment work together.
A permanent rear bed and additional pop-top sleeping area
One of the main features of this Mercedes Sprinter conversion is its two separate sleeping areas.
The rear of the vehicle houses a permanent raised bed with a custom memory foam mattress and upgraded sprung bed system. Side flares with integrated windows provide additional space across the width of the vehicle, helping make better use of the available interior dimensions.
Above the main living area, an ATEK pop-top roof provides another dedicated sleeping space without permanently increasing the vehicle's overall roof height.
The pop-top also incorporates its own 230V socket and USB charging point.
With the main bed permanently made up, there is no need to dismantle the seating area at the end of each day. The additional roof bed allows the vehicle to accommodate more sleepers while retaining the functionality of the main cabin.
AL-KO hydraulic levelling with integrated weighing
Levelling a large campervan on uneven ground isn't always straightforward, particularly when carrying additional equipment and water.
This Sprinter is fitted with an AL-KO hydraulic levelling system with an integrated weighing module.
Hydraulic supports deploy beneath the chassis to level and stabilise the parked vehicle, removing the need to position manual levelling ramps beneath the wheels.
The weighing function also provides a useful way to monitor vehicle weight and loading.
For a fully equipped expedition campervan, weight deserves particular attention. Water, batteries, cabinetry, additional sleeping arrangements and exterior accessories all contribute to the finished vehicle's mass.
Understanding the weight of the completed build is an important part of operating it within its permitted limits.
Off-grid electrics and onboard power
The STORM 5 electrical specification is designed to support the equipment required for independent touring.
This conversion includes:
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300Ah lithium leisure battery
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3,000W inverter
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300W semi-flexible solar panel system
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Victron DC-DC charging
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External 230V shore-power connection
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13A household sockets and USB-C charging points
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CBE control panel and 12V electrical system
The lithium battery provides stored energy for onboard electrical equipment, while the solar installation and DC-DC charging system provide options for replenishing that energy when travelling.
The 3,000W inverter allows compatible mains-powered appliances to operate from the leisure battery, subject to available battery capacity and system limits.
This build also includes Starlink connectivity for internet access where suitable coverage and power are available.
Heating, air conditioning and year-round usability
For longer trips, temperature control is an important part of the specification.
The vehicle is equipped with a Truma diesel heating and hot-water system alongside a Dometic FreshJet FJX4 1500M roof-mounted air-conditioning unit.
Diesel heating provides cabin warmth and hot water, while air conditioning offers additional comfort in warmer conditions when an appropriate electrical supply is available.
The exterior fresh- and grey-water tanks also include winterisation equipment, comprising tank heating blankets and heat probes.
Combined with soundproofing, thermal insulation and insulated interior linings, these systems make the campervan better equipped for use across a wider range of seasonal conditions.
A practical kitchen for extended trips
The kitchen is positioned alongside the sliding door, creating a functional cooking area with access to the outside.
It features a long white Orion worktop, slate-grey cabinetry and contrasting black fittings.
The equipment includes:
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Two-ring induction hob
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Undercounter fridge/freezer
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700W motorhome microwave
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Sink with black wall-mounted tap
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Soft-close drawers with positive catches
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Additional 13A sockets
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Swing-out table extension
The combination of induction cooking, refrigeration and microwave facilities provides multiple options for meal preparation without installing an onboard LPG cooking system.
Storage, worktop space and secure cabinetry are equally important. Every drawer and cupboard needs to remain practical when the vehicle is moving, rather than simply looking good when parked.
Dedicated bathroom with shower and hot water
The STORM 5 layout incorporates a separate washroom with a shower, basin and toilet.
For this conversion, the bathroom was finished in gloss white with contrasting black hardware. Additional storage, mirrors and a retractable drying line were also specified.
The facilities include a Thetford cassette toilet, hot and cold water, a shower and a dedicated bathroom cupboard.
Having a separate bathroom is particularly useful for extended touring, allowing the vehicle to function independently of campsite facilities when water storage and waste capacity permit.
Interior materials and finishes
The interior follows a clean, restrained specification, with finishes chosen to create contrast without overcomplicating the cabin.
The principal materials include:
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Two-tone Alcantara wall lining
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Teak-coloured SurfDek strip ceiling
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Limed oak herringbone LVT flooring
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Slate-grey kitchen cabinetry
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White Orion countertops
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Gloss-white bathroom
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Pebble-grey garage cabinetry
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Black taps, fittings and hardware
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Custom leather upholstery for the cab and rear bench
Warm integrated LED lighting runs through the ceiling and cabinetry, providing practical task lighting as well as more subdued illumination in the evenings.
The floor is finished in hard-wearing LVT, with rubberised flooring in the rear garage where durability and ease of cleaning are particularly important.
Exterior equipment and storage
The exterior specification includes several practical additions for touring and day-to-day use.
A Fiamma wind-out awning provides sheltered space alongside the vehicle, with an integrated LED awning light for evening use. A sliding-door flyscreen allows ventilation while reducing insect entry.
At the rear, a black spare-wheel carrier and ladder provide exterior access and additional equipment-carrying functionality.
The build also includes five BFGoodrich tyres, traction boards, a side step and rear-door MOLLE storage panels.
Inside the rear garage, rubberised flooring, storage units and cargo tethering points help keep equipment organised and secure.
An external shower connection provides a convenient option for rinsing muddy equipment before bringing it inside.
Built with weight, space and usability in mind
A campervan conversion is a balance between equipment, available space and payload.
Adding a pop-top roof, hydraulic levelling, air conditioning, additional furniture and exterior accessories introduces extra capability, but each component also contributes to vehicle weight.
At Wildworx, weight is considered alongside the layout and engineering of the conversion. Where appropriate, we use lightweight construction methods and aluminium furniture systems to help manage mass without compromising strength or functionality.
The aim is to achieve a finished vehicle that carries the equipment its owner needs while remaining practical to drive, live in and maintain.
This STORM 5 demonstrates how a Mercedes Sprinter can combine a permanent rear bed, additional sleeping accommodation, full bathroom, integrated kitchen and extensive touring equipment within one vehicle.
Build your own Mercedes Sprinter campervan
Every Wildworx campervan conversion starts with how the vehicle will actually be used.
Whether you need additional sleeping capacity, substantial off-grid power, dedicated equipment storage or a fully equipped expedition interior, we design the layout and systems around your requirements.
We specialise in bespoke conversions of the Mercedes Sprinter, MAN TGE and VW Crafter, built at our workshop in Alcester, Warwickshire.
Frequently asked questions
Can a Mercedes Sprinter campervan have a pop-top roof?
Yes. This STORM 5 conversion incorporates an ATEK pop-top roof with an additional sleeping area, providing extra accommodation while retaining a lower roof profile when the pop-top is closed.
Can hydraulic levelling be fitted to a Mercedes Sprinter campervan?
Hydraulic levelling systems can be fitted to suitable vehicles, subject to chassis compatibility, weight and installation requirements. This conversion uses an AL-KO system with integrated weighing functionality.
Can you live off-grid in a Mercedes Sprinter conversion?
A properly specified Sprinter campervan can support extended periods away from campsite hookups. Battery capacity, solar generation, charging systems, water storage and individual power consumption determine how long the vehicle can operate independently.
Does a Mercedes Sprinter campervan need air conditioning?
Not necessarily. However, roof-mounted air conditioning can improve comfort in hot conditions. This build includes a Dometic FreshJet FJX4 1500M, which requires a suitable electrical supply.
How much does a bespoke Mercedes Sprinter campervan conversion cost?
The cost depends on the vehicle, layout, materials and equipment specification. Additional systems such as pop-top roofs, hydraulic levelling, upgraded electrics and air conditioning affect the overall build cost. Wildworx provides bespoke quotations based on the required specification.
Where are Wildworx Mercedes Sprinter campervans built?
Our conversions are built at the Wildworx workshop in Alcester, Warwickshire, UK. We specialise in bespoke expedition campervans based on the Mercedes Sprinter, MAN TGE and VW Crafter.
