Article C3.8.2
Engine Cover
Technical Regulations
Article C3.8.2
Engine Cover
Chapter: C3
In Simple Terms
The engine cover must fit within a defined boundary box and can have up to two distinct sections when viewed from above. From the side, it must completely hide the underlying structure. Additionally, any curved surfaces on the outer parts of the engine cover must have smooth, gradual curves—convex curves need a minimum 75mm radius and concave curves need at least 50mm radius to prevent sharp edges.
- Engine cover bodywork must stay entirely within the RV-EC (Rear View Engine Cover) boundary
- Maximum of two sections allowed in any horizontal plane (Z-plane)
- Must fully obscure RS-EC (Rear Structure Engine Cover) when viewed from the side
- Outer aerodynamic surfaces require minimum 75mm convex radius and 50mm concave radius for safety and performance fairness
Official FIA Text
Engine Cover Bodywork must lie in its entirety within RV-EC, have up to two sections in any Z-Plane, and when viewed from the side, fully obscure RS-EC. Engine Cover Aerodynamic Surfaces in any X-Plane outboard of Y = 5 must contain no convex radius of curvature less than 75mm and no concave radius less than 50mm.
engine coverbodyworkaerodynamic surfacesradius of curvaturerear wing
2026 Season Regulations