4. Eligibility
4.1. Except for Standard EVs in non-Speed Events, only ASN EV trained Scrutineers will perform eligibility scrutineering on EVs.
4.2. ASN Technical Officials reserve the right to request access to any set-up information or data from the Vehicle ECU( s) and other electrical devices at any time during an Event including data that proves compliance with Arts. 7.3 and 7.5.
4.3. It is the responsibility of the Competitor to prove that the Vehicle has not exceeded any control parameter limits during an Event( e. g. maximum power, maximum voltage etc.).
4.4. ASN Technical Officials reserve the right to request that the Vehicle be fitted with a data logger.
4.5. For Bespoke EVs the Team HV qualified person must be present at Eligibility scrutineering( equipped with their own set of HV safety equipment and tools as required) and be prepared to safely isolate the HV system and remove any HV components for more detailed inspection at the request of the Scrutineer.
5. Charging
5.1. Off-board chargers must be commercially available and meet all UK Electrical safety requirements. Details must be supplied to the ASN 3 months prior to the Vehicle inspection.
5.2. Standard and Modified Vehicles must use the unmodified on-board charger, charge port and charging cable( s) supplied with the Vehicle.
5.3. Charging of the RESS must be done with the battery( s) in-situ.
5.4. Any temporary charging installation must be installed and connected to the mains supply by a trained competent person following the Code of practice for Electric Vehicle Charging Equipment Installation, 5th edition and meet all the requirements of BS7671: 2018( the 18th Edition wiring regulations), with particular attention paid to earthing.
5.5. The charging system must be automatic and must ensure that the RESS cannot be overcharged or damaged if left permanently connected to the charger.
5.6. The use of diesel or petrol generators to provide the energy to charge EVs is strongly discouraged. ASN are working with Circuit / Venue owners to investigate provision of sustainable charging facilities.
IN ADDITION A BESPOKE ELECTRIFIED VEHICLE MUST COMPLY WITH Arts. 6 – 19.
6. Motor and Inverters
6.1. A maximum of two motors, whose output are combined mechanically driving the wheels through a mechanical gearbox and differential are permitted. A maximum of two inverters are permitted. In Drag Racing there is no limit on the number of motors or inverters.
6.2. Only a single driven axle is permitted i. e. FWD or RWD. 6.3. Any system that achieves torque vectoring across or between axles is prohibited. 6.4. Hub / wheel motors are prohibited. 6.5. Only commercially available production motors and inverters are permitted. 6.6. Repurposing of OEM motors and inverters is permitted.
6.7. The inverter may be integrated with or separate from the motor. The motor may be integrated with or separate from the gearbox.
6.8. Brushed DC motors are permitted and motors with exposed commutators must be fitted with a commutator shield.
6.9. If the motor or inverter is liquid cooled, > 51 % water- based coolant must be used. The use of Dielectric fluid is prohibited.
Motorsport UK 2025 National Competition Rules Version 11
Chapter 7 Appendix 11- Electrified Vehicles 282