Euro V trucks equipped with NOx control will be eligible for the UK Department of Transport's reduced pollution certificate (RPC) from 1 October 2007. The RPC will discount the vehicle excise duty by up to £500 (€735) depending on weight and axles. The RPC will expire when Euro V legislation is fully implemented in October 2009.

The Government's decision to delay the RPC until the introduction of NOx control received widespread condemnation from the UK road haulage industry, but reflects concerns about the NOx reduction performance of existing Euro IV & V systems.