The standard dry boxes
A 20ft general purpose container offers roughly 5.9 metres of internal length, 2.35 metres of internal width and 2.39 metres of internal height, giving approximately 33 cubic metres of usable capacity and a maximum payload near 28 tonnes, though the practical payload achievable on UK roads is usually constrained well below that figure by road haulage weight limits long before the container's structural limit is reached. This is the standard workhorse unit for dense, heavy cargo — a single vehicle plus a modest quantity of spares, machinery parts, or palletised goods where weight rather than volume is the limiting factor.
A 40ft general purpose container doubles the length to approximately 12.03 metres for roughly 67 cubic metres of capacity, but the payload only rises to around 26 tonnes — actually slightly less than a 20ft unit in some specifications — which is the structural reason that heavy, dense cargo such as steel, machinery or a single vehicle with minimal additional load travels most efficiently in a 20ft box, while light, bulky cargo such as household furniture, textiles or two vehicles side by side travels most efficiently in a 40ft box where the extra volume, rather than extra weight allowance, is the valuable resource.
A 40ft high cube container adds a further 30 centimetres of internal height compared with a standard 40ft box, bringing the internal height to around 2.69 metres and the total capacity to roughly 76 cubic metres. That extra headroom is precisely what allows tall crates, stacked furniture, and vehicles fitted with raised suspension, roof racks or roof tents to load without needing to move to a flat rack or open-top unit, and high cube containers have become the default choice for household removal shipments for exactly this reason.
Door apertures deserve separate attention from the headline internal dimensions. A standard 20ft or 40ft dry container has a door opening of approximately 2.34 metres wide and 2.28 metres high — narrower and lower than the internal ceiling height in the case of a high cube unit — and this is the figure that actually determines whether a tall or wide item can be loaded at all, regardless of whether it would fit once inside. Many a shipment has been planned around internal cubic capacity only to discover at the packing stage that the item cannot physically pass through the door.
Specialist equipment
Flat rack containers have collapsible or fixed steel end walls and no side walls at all, which suits plant machinery, boats, industrial equipment and out-of-gauge project cargo that is either too wide, too tall or an awkward shape to load through a standard container door. Cargo on a flat rack is lashed directly to the deck using chains and turnbuckles secured to purpose-built lashing points, and because there are no side walls to obstruct loading, a crane can lower cargo straight down onto the rack from above, which is essential for anything that could not otherwise be manoeuvred through a conventional door aperture.
Open-top containers retain the standard four walls of a dry box but replace the solid steel roof with a reinforced tarpaulin supported on removable roof bows, which allows cargo to be craned in from directly above rather than driven or forklifted in through the door. This suits tall machinery, certain vehicles fitted with equipment that cannot be lowered for standard loading, and any cargo whose height exceeds the door aperture but still fits within the container's side walls once lowered in from the top.
Reefer containers, properly called refrigerated containers, maintain a set temperature typically adjustable between roughly minus 25 and plus 25 degrees Celsius for perishables, pharmaceuticals and other temperature-sensitive cargo, and draw electrical power continuously from the vessel while at sea, from the terminal's power infrastructure while in port, and from a portable generator set known as a genset while being moved by road, since the refrigeration unit cannot operate without a constant power supply at every stage of the journey. While reefers are rarely relevant to vehicle shipping, they occasionally feature in combined shipments where a vehicle traveller is also relocating temperature-sensitive goods, and understanding their power requirements matters for anyone coordinating a mixed shipment.
Platform containers, sometimes called flat-rack platforms without any end walls at all, represent the most extreme specialist option, offering nothing more than a reinforced steel floor with lashing points, used almost exclusively for the heaviest and most awkwardly shaped industrial cargo such as generators, transformers or entire pre-fabricated structures that could not be accommodated within any enclosed container regardless of type.
Matching cargo to the box
Always work from the internal dimensions and the door aperture, never the external measurements printed on a container's technical data sheet — the door opening on a standard box is narrower and lower than the interior cube, and that difference is precisely what strands an over-wide crate on the quay after it has already been transported to the terminal at the shipper's expense. A careful pre-loading measurement check against both figures, not just one, avoids this entirely preventable and expensive mistake.
Plan the floor loading of any container carefully, distributing weight evenly across the length of the box rather than concentrating it at one end, both because uneven loading can affect the handling characteristics of the container during road transport and because road haulage regulations in the UK impose axle weight limits on the trailer carrying the container that a poorly distributed load can breach even when the container's total weight is within its own rated limit.
Brace everything inside the container so that nothing shifts during a heavy roll at sea — a container ship in open ocean can roll to a significant angle in poor weather, and cargo that is merely placed rather than properly chocked and lashed will move, potentially causing damage to itself, to other cargo sharing the box, or in the worst case compromising the container's structural integrity if a heavy item breaks loose against a wall. For vehicles specifically, this means wheel chocks fixed to the container floor and multi-point chassis strapping as a minimum standard, which is exactly the process followed at the ShipCars UK packing facility for every vehicle loaded into a container.
Consider also the destination handling equipment available before selecting container type. A flat rack or open-top container requires a crane for loading and discharge, which is standard at major commercial ports such as Tilbury, London Gateway, Felixstowe, Southampton and Liverpool, but may not be available at smaller or less developed terminals at the destination end. Confirming that the receiving port can actually handle the container type you intend to use is a step worth taking before booking rather than after the container has already sailed.
Container weight limits and UK road haulage rules
A loaded shipping container arriving in the UK, or being packed for export, must travel by road at some point in its journey, and UK road haulage law sets firm limits on gross vehicle weight that apply regardless of the container's own structural rating. A standard articulated lorry combination in the UK is generally limited to 44 tonnes gross weight, and once the weight of the tractor unit, the trailer, and the container itself are subtracted, the realistic maximum payload that can actually be moved on UK roads is often meaningfully below the container's theoretical structural maximum, particularly for a 20ft box rated to carry up to 28 tonnes of cargo.
This is why verified gross mass, commonly abbreviated to VGM, must be declared to the shipping line before a container is loaded aboard a vessel — a requirement introduced globally following amendments to the SOLAS convention — and why UK hauliers will refuse to collect a container whose declared or measured weight would put their vehicle combination over the legal road limit. Shippers should always confirm the total planned weight of a container's contents against both the container's own payload rating and realistic UK road haulage limits before finalising a booking, since discovering an overweight container at the terminal gate after collection has already been arranged causes both delay and additional cost.
Container condition grades and what they mean for vehicle shipping
Containers are typically offered in several condition grades, most commonly described as cargo-worthy, IICL-certified, or new, or one-trip. A cargo-worthy container has passed a structural inspection confirming it is watertight and sound but may show cosmetic wear, dents and surface rust consistent with several years of service, and this grade is entirely suitable for vehicle shipping provided the inspection is current and the container has no active leaks. An IICL-certified container has passed a more rigorous inspection standard commonly required by certain shipping lines and cargo insurers for higher-value shipments.
New or one-trip containers, so called because they have made only a single laden voyage from the factory, cost more to hire but offer the cleanest, driest, most cosmetically sound interior available, and are sometimes specified by owners of concours-condition classic cars or very high-value vehicles who want to eliminate even the small risk of a legacy odour, residual moisture, or cosmetic contact mark from a previous cargo. For the overwhelming majority of vehicle shipments, a properly inspected cargo-worthy container provides entirely adequate protection, and ShipCars UK only sources containers that have passed a current structural and watertightness inspection regardless of the grade quoted.
Frequently asked questions on container sizes and dimensions
How many vehicles fit in a 40ft container? Typically two standard saloon or hatchback vehicles fit comfortably side by side in a 40ft general purpose or high cube container, though the exact number depends on each vehicle's width and length — larger SUVs or vans may only allow one vehicle plus a modest volume of additional cargo such as spares or personal effects.
What is the difference between a high cube and a standard 40ft container? The internal height is the only material difference — a high cube offers roughly 30 centimetres of additional headroom over a standard 40ft box, which matters for tall cargo but makes no difference to length or width, and therefore no difference to how many vehicles of standard height can be accommodated side by side.
Can a motorbike share a container with a car? Yes — motorcycles are routinely loaded alongside a car within the same container, typically secured in a purpose-built crate or wheel-chocked directly to the container floor at a point that does not interfere with the car's own lashing points, making this a popular and cost-effective option for customers exporting both a car and a motorcycle to the same destination.
Do I need to know the exact container dimensions before booking with ShipCars UK? Not necessarily in full technical detail — our team will recommend the appropriate container size and type based on your vehicle's dimensions and any additional cargo you intend to ship alongside it, though understanding the general principles set out here helps in discussing options and understanding why a particular container type has been recommended for your specific shipment.
Loading vehicles into containers at East Tilbury
ShipCars UK packs the great majority of its container shipments at its own facility near East Tilbury, close to the Port of Tilbury and London Gateway container terminals. Bringing the vehicle to us rather than having it packed at a third-party warehouse means the same team that surveys the vehicle's condition also supervises the chocking, strapping and sealing, which keeps the documentary chain — photographs, weight, odometer reading and seal number — consistent from the moment the vehicle arrives to the moment the container leaves for the terminal.
Self-delivery to our yard is available by appointment, and we also offer collection from anywhere in mainland UK on a flatbed or trade plate driver where self-delivery is not practical. Either way, allow a realistic window between delivery and the container's stuffing date — a vehicle that arrives with an outstanding finance query or missing paperwork on the morning packing is due to happen will delay the whole container, not just that one vehicle, if it is a shared consolidation booking with other shippers' cargo already loaded.
Insurance for containerised vehicle shipments
A sealed container reduces day-to-day handling risk compared with an open RoRo deck, but it does not remove risk altogether, and carrier liability under the Hague-Visby Rules remains capped at a level well below a modern vehicle's real value. ShipCars UK offers marine cargo insurance on every container booking, written under Institute Cargo Clauses A, at a typical premium of around 1.5% of declared value — for a container carrying two vehicles worth £10,000 each, that is a modest outlay set against the risk of a total loss from a dropped container, a hold breach, or a serious fire at sea, all of which, while rare, do occur across the industry every year.
Where a container carries more than one vehicle, or a vehicle plus personal effects, make sure the insurance schedule lists each item and its individual declared value rather than a single lump sum for the whole container, since a lump-sum declaration can complicate apportioning a claim if only part of the contents is damaged.
Destination-specific container requirements
Australia and New Zealand's biosecurity authorities require any container carrying a vehicle to be steam-cleaned and inspected before the vehicle is accepted, and officers will refuse entry to a vehicle showing any trace of soil, seeds or plant matter in the wheel arches, underbody or engine bay. Presenting a genuinely clean vehicle for packing at our East Tilbury facility, rather than assuming a quick wipe-down will suffice, is by far the cheapest way to avoid a compulsory and costly cleaning order at the Australian or New Zealand end.
Nigeria and much of West Africa apply import age restrictions and, in Nigeria's case, a pre-shipment or destination inspection through the Nigeria Customs Service; vehicles older than 12 years from manufacture are currently barred from import, so confirming the vehicle's age against current rules before booking a container avoids a costly refusal at the discharge port.
The United States requires both an Importer Security Filing and an Automated Export System filing at least 24 hours before the vessel loads at the UK port under the 72-hour rule enforced by US Customs and Border Protection — this applies to containerised cargo just as it does to RoRo, and missing the filing window can prevent the container being loaded at all.
The UAE, generally received through Jebel Ali, requires accurate commercial documentation and, depending on the vehicle's age and the receiving emirate, may require a conformity certificate before registration; confirming these requirements with the consignee before the container is packed avoids a vehicle arriving that cannot subsequently be registered.
Typical container shipping timelines and costs in GBP
As a planning guide, a sole-use 20ft container carrying a single vehicle from a UK port to West Africa typically costs more than the equivalent RoRo booking but less than the same route by air, with all-in pricing including UK collection, terminal handling and freight commonly running to the mid four figures in pounds sterling, and transit times of two to five weeks depending on the specific discharge port and any transhipment involved.
A shared container slot for one vehicle on the same route usually costs somewhat less than a sole-use booking but adds one to three weeks of consolidation time while the container fills with other shippers' cargo. To Australia or New Zealand, a sole-use 40ft high cube container carrying two vehicles typically works out more cost-effective per vehicle than two separate sole-use 20ft bookings, with total transit times of five to eight weeks door to door once biosecurity clearance is included.
Common mistakes when choosing or booking a container
The most frequent error is selecting a container size based on internal cubic capacity alone without checking the door aperture, which is narrower and lower than the interior — an SUV or a lifted 4x4 can pass every internal dimension check and still fail to fit through a standard door opening. A close second is failing to declare an accurate total weight before booking, which UK road haulage weight limits and the SOLAS verified gross mass requirement both make a hard prerequisite rather than a formality.
Assuming any destination port can handle a flat rack or open-top container is a third avoidable mistake — these container types require crane-equipped terminals, which are standard at major UK and international commercial ports but not universal at smaller or less developed facilities, so confirm destination handling capability before specifying a non-standard container type.
Further frequently asked questions on container dimensions
What is the difference between a general purpose and a high cube container in terms of vehicle capacity? The general purpose and high cube versions of a given length share identical floor space, so the number of vehicles that fit side by side is the same; the high cube's extra height only matters for taller vehicles or where cargo is stacked above the vehicles.
Can I use a 20ft container for two small vehicles? It is possible for two very small city cars if their combined length and width fit within the 20ft box's internal dimensions, but in practice most shippers moving two vehicles choose a 40ft unit, since the extra length comfortably accommodates two standard-size cars with room for lashing access on both sides.
Does ShipCars UK provide the condition report and seal number to the buyer as well as the seller? Yes — the condition report, packing photographs and seal number are shared with both parties to the transaction as standard practice, since this documentation protects the buyer's ability to raise a claim just as much as it protects the seller against a false damage allegation.