2.1. All Vehicles must comply with Construction and Use Regulations and be fitted with safety belts if appropriate. Where fitted seat belts must be worn on the Public Highway.
2.2. Handheld fire extinguishers to a level of safety specified in Ch. 7 App. 6 Art. 3 are mandatory and which are accessible to the crew( note a 1.75ltr minimum for AFFF or 2x1ltr AFFF or 2x1kg Powder is permitted).
3. Chassis / Body
3.1. Chassis / body structures must comply with definitions of a Saloon, Closed, Sports or Touring Car as applicable.
3.2. In particular Vehicles must:
a. Be equipped with an effective windscreen or aero-type screen. b.
c.
d.
The body overhang of non-production cars must not exceed one-fifth of the overall car length at the front and one- third at the rear. Overhang is measured from the line of the road wheel centres.
For production cars any extensions must not exceed the overhang proportions of a non-production car. Any additional spare wheel carrier should be fitted as close as possible to the body and satisfy Arts. 7.9 – 7.12 Production cars need not comply with Ch. 7 App. 2 Art. 6 in respect of bonnets.
Retain their original wheelbase. Any alteration to the wheelbase of a production car( except in Class 2) will transfer the car to Class 8.
e. Be equipped with the same number of seats as intended by the manufacturer. f. Have the forward and rearward bulkheads of the engine compartment in their original positions. g. Retain the engine cover boot lid and wings although the material may be changed.
3.3. With the exception of cars of periods A to D all cars must be equipped on all wheels with mudguards which present no sharp edges and cover the complete wheel( flange + rim + tyre) around an arc of 120 degrees. This minimum coverage must:
a.
b. c. be achieved with a continuous surface of rigid material. The rear tyre must not be visible when viewed from above
extend forward ahead of the axle line extend downward behind the wheel d. extend downward behind the driven wheel to a point no more than 150mm above the axle centre line.
3.4. Vehicles must be equipped with two fixed seats for Driver and Passenger the rearmost part of which must not be behind the rear wheel axis.
3.5. The weight distribution of the Vehicle may be altered by the addition of Ballast.
3.6. The position of the battery spare wheel and fuel tank may be changed but any further modifications will cause the Vehicle to be reclassified to Class 7( a).
3.7. In Classes 1 to 7 and 90 any Ballast tool or other boxes must be positioned within the body shell or the bumpers firmly secured and not visible protruding or varied during Events( see Art. 3.10).
3.8. A luggage box within the plan view of the car may be included in an accepted specification for a car in Class 7( c).
3.9. The silhouette of Vehicles in Classes 1 to 6 and 90 as seen from the side must be unaltered except for the engine cover, spare wheels and bumpers. Bumpers may be removed but if retained must be in the original manufacturer’ s position.
3.10. In Class 2 Vehicles the chassis must be that of the original manufacturer for the Vehicle although a change in bodywork is permitted providing it is in keeping with the period.
3.11. To be eligible for Class 7( a) the chassis / floor pan of the original car( between wheel centres) must be
Motorsport UK National Competition Rules 2026 Edition 1
Chapter 17 Appendix 3- Technical Regulations- Classic Reliability Trial Vehicles
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