The present invention provides a roof structure for a vehicle having a roof length between a front edge and a rear edge. The roof structure comprises a convex portion extending in a rearward direction from the front edge; a concave portion located rearwards of the convex portion; and a substantially flat portion located rearwards of the concave portion to the rear edge; wherein the convex portion has a length that is approximately 40% to 50% of the roof length, the concave portion has a length that is approximately 30% to 50% of the roof length and the substantially flat portion has a length that is approximately 10% to 20% of the roof length.
