Solar cars can enter the 2020 challenge in one of four classes, each with different rules and objectives.
- Challenger Class: Cars entered into this category are newly built, four-wheel, single seater and are built for maximum energy efficiency and endurance.
- Adventure Class: Cars entered into this category have participated in previous editions of the race and may include three-wheelers and vehicles with solar arrays that are larger than required for the Challenger Class.
- Cruiser Class: Cars entered into this class are designed to be practical for everyday use and normally include four seats and a storage compartment.
Once the teams are announced, spectators can read through the their individual profiles to find out who is competing in the different classes at the 2020 event.