Since Brexit, businesses trading goods between the UK and European Union have had to follow a new set of customs requirements known as Rules of Origin.
These rules determine whether products qualify for preferential tariffs under the UK–EU Trade and Cooperation Agreement (TCA). Simply transporting goods between Britain and Europe does not automatically mean they qualify for tariff-free trade.
For the automotive industry, Rules of Origin are particularly important. Cars and electric vehicle batteries often contain components manufactured in several countries, making it essential for manufacturers to understand where their materials come from and how their vehicles are produced.
The rules can affect manufacturing costs, supply chains and the competitiveness of vehicles traded between the UK and EU. Changes to the requirements for electric vehicles and batteries have also made this an important issue for the future of the British motor industry.
For motorists, these wider industry developments can influence new-car prices and, potentially, the used-car market. Visit our valuation guidance hub for more advice on understanding vehicle values and market trends.
What are Rules of Origin?
Rules of Origin determine the economic nationality of a product for international trade purposes. They establish whether goods qualify as originating in the UK or EU under the Trade and Cooperation Agreement.
This is particularly important for car manufacturers because a vehicle may be assembled in one country using engines, batteries, electronics and other components sourced from around the world.
For example, a car assembled in Britain does not automatically qualify as UK-originating. Manufacturers must demonstrate that it meets the relevant product-specific requirements, which may include limits on the value of non-originating materials.
Electric vehicles present additional challenges because their batteries contain valuable materials and components that may originate outside the UK and EU.
Understanding these requirements helps manufacturers determine whether their vehicles qualify for preferential tariffs when exported between Britain and Europe.
Why do Rules of Origin matter?
Rules of Origin matter because they determine whether goods traded between the UK and EU can benefit from preferential tariffs under the Trade and Cooperation Agreement.
For the automotive industry, this can have significant financial consequences. Vehicles that fail to meet the relevant origin requirements may face import tariffs, potentially increasing costs for manufacturers, importers and ultimately consumers.
The rules are especially important for electric vehicle production, where batteries and other high-value components account for a substantial proportion of a vehicle’s value.
Car manufacturers therefore need to understand:
- Where their vehicle components and raw materials originate.
- Whether their manufacturing processes meet the relevant origin requirements.
- How much non-originating material is permitted under the applicable rules.
- What evidence is needed to demonstrate compliance.
- How changes to supply chains could affect tariff eligibility.
These requirements can influence decisions about where manufacturers source components, build vehicles and invest in battery production.
For UK motorists, the effects may be indirect, but changes in manufacturing and import costs can eventually influence vehicle prices and the wider car market.
Preferential origin explained
Preferential origin allows qualifying goods traded between the UK and EU to benefit from reduced or zero customs tariffs under the Trade and Cooperation Agreement.
For the automotive industry, this means vehicles and components must satisfy specific origin requirements before manufacturers or importers can claim preferential treatment.
Products may qualify through:
- Wholly obtained materials: Materials originating entirely within the UK or EU.
- Qualifying manufacturing processes: Production that meets the relevant product-specific origin rules.
- Permitted non-originating materials: Components sourced from outside the UK or EU, provided their use remains within the applicable limits.
Electric vehicles and batteries have particular requirements because of the complexity of their international supply chains.
Importantly, the UK and EU agreed to extend the existing electric vehicle and battery origin requirements until 31 December 2026, with stricter requirements scheduled to apply from 1 January 2027.
This extension gave manufacturers additional time to develop regional battery production and adapt their supply chains.
Businesses claiming preferential tariffs must retain appropriate evidence demonstrating that their vehicles or components satisfy the relevant origin requirements.
What are non-tariff barriers?
Although qualifying vehicles and components may benefit from tariff-free trade between the UK and EU, businesses must still comply with customs procedures and other regulatory requirements.
These are commonly described as non-tariff barriers because they can increase the cost and complexity of international trade without imposing an import tariff.
For automotive manufacturers, importers and component suppliers, these requirements may include:
- Customs declarations: Completing the necessary import and export documentation.
- Proof of origin: Providing appropriate evidence when claiming preferential tariff treatment.
- Vehicle regulations: Ensuring vehicles and components meet applicable technical and approval requirements.
- Product certification: Demonstrating compliance with relevant safety and manufacturing standards.
- Border checks: Allowing for inspections or additional verification where required.
- Supply chain documentation: Maintaining accurate records of materials, components and manufacturing processes.
These additional requirements can create administrative costs, delays and uncertainty for businesses trading across borders.
For the automotive industry, where manufacturers depend on complex international supply chains and timely deliveries, even relatively small disruptions can have significant consequences.
Although motorists may not encounter these requirements directly, increased costs throughout the supply chain can ultimately affect vehicle availability and pricing.
Five steps to applying Rules of Origin
Businesses importing or exporting vehicles and automotive components between the UK and EU need to establish whether their goods qualify for preferential tariff treatment.
Although the precise requirements depend on the product, the following five steps provide a useful starting point.
1. Identify the correct commodity code
Every product must be classified using the appropriate customs commodity code. This determines which product-specific Rules of Origin apply.
2. Establish where the materials originate
Manufacturers and suppliers need to identify the origin of the materials and components used in their products. For vehicles, this may include engines, batteries, electronic systems and other major components.
3. Check the applicable origin requirements
Review the relevant product-specific rules under the UK–EU Trade and Cooperation Agreement. These may involve limits on non-originating materials or particular manufacturing requirements.
4. Gather supporting evidence
Businesses should obtain and retain appropriate documentation, such as supplier declarations, production records and material-cost information, to support claims of preferential origin.
5. Make and maintain a valid origin claim
Where the requirements are satisfied, preferential treatment can be claimed using the appropriate customs procedures and supporting evidence, such as a statement on origin or the importer’s knowledge.
Importantly, meeting Rules of Origin requirements does not remove the need to comply with other applicable customs and regulatory obligations.
Because automotive supply chains can be complex, businesses should consult the latest official UK government guidance or obtain specialist customs advice when necessary.
Proving origin
To benefit from preferential tariffs under the UK–EU Trade and Cooperation Agreement, businesses must be able to demonstrate that their goods meet the relevant Rules of Origin.
For automotive manufacturers, this can be particularly complicated because a single vehicle may contain thousands of components sourced from different countries.
A claim for preferential tariff treatment must be supported by an appropriate basis, such as a statement on origin issued by the exporter or the importer’s knowledge that the goods qualify.
Depending on the circumstances, supporting evidence may include:
- Statements on origin: Declarations made by exporters confirming that goods meet the applicable origin requirements.
- Supplier declarations: Information from suppliers establishing the origin of materials and components.
- Manufacturing records: Documentation showing where and how vehicles or components were produced.
- Material and component costs: Records helping demonstrate compliance with applicable limits on non-originating materials.
- Customs documentation: Import and export records supporting the relevant transactions.
For electric vehicle manufacturers, battery supply chains can make this process especially demanding. Businesses may need detailed information about battery cells, materials and manufacturing processes to establish whether their products qualify.
Accurate record-keeping is essential because customs authorities may request evidence to verify an origin claim.
Businesses should follow the applicable record-retention requirements and consult current HMRC guidance to ensure their documentation is sufficient.
The challenges facing electric vehicle manufacturers extend beyond customs requirements. Changes in production costs, supply chains and consumer demand have also led some manufacturers to reconsider their plans. Read more about the five major car brands that have delayed or changed their electric vehicle strategies.
Final thoughts
Rules of Origin remain an important part of the UK’s trading relationship with the European Union, particularly for an automotive industry that relies on international manufacturing and supply chains.
For car manufacturers, understanding where components originate and meeting the relevant requirements can make the difference between qualifying for tariff-free trade and facing additional import costs.
The transition to electric vehicles has made these rules even more significant. Battery production, access to raw materials and investment in UK and European manufacturing facilities will all play a part in determining how easily manufacturers can meet future requirements.
With stricter Rules of Origin for electric vehicles and batteries scheduled to take effect from January 2027, the industry faces important decisions about its supply chains and production strategies.
For UK motorists, these developments may seem distant from everyday car ownership, but manufacturing costs and international trade arrangements can influence the prices and availability of both new and used vehicles.
Keeping an eye on these changes can help drivers better understand the wider factors affecting the UK car market.
Changes in the automotive industry can also affect vehicle values. For an example of how shifting market conditions influence depreciation, read our article about the impact of falling used electric car prices on fleet businesses.
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