Skip to Content

Challenger Class

Challenger Class


The Challenger Class encompasses the historic motivation of the Bridgestone World Solar Challenge: to design and build a solar vehicle designed to most effectively complete the 3,000 kilometre journey.

Challenger Class vehicles are visually stunning and slick. They are built for sustained endurance and total energy efficiency.

The winner of the Challenger Class is determined by the first crossing of the finish line in Adelaide.

The 2023 design parameters for Challenger Class solar cars: 

Max. Length: 5m

Max. Width: 2.2m

Max. Solar Array: 4m2

Wheels: At least 3

Driver: 1

Stages: Single stage, Darwin to Adelaide 

What do we observe from Challenger Class Entries?

The smaller solar collector area and broader design envelope included in recent year's regulations allow a greater variety of designs. Expect to see some differently shaped cars! Challenger Class cars tend to be smaller and sleekr, with improved design vision.

A great deal of lateral thinking is required to meet conflicting needs of maxmising the solar collection area, minimising aerodynamic drag and other design regulations needed to qualify for the Challenger Class and contest the World Solar Cup.