A diagram of the competing drivetrain philosophies of the Group B era.
At the beginning stood the Lancia 037, the final championship-winning rear-wheel-drive rally car.
What followed was the rapid expansion of all-wheel-drive design. Audi, Peugeot, Ford, Austin Rover, and Citroën each pursued their own interpretation of the formula as power increased and chassis layouts evolved.
Together these machines represent the technological escalation that defined rallying between 1982 and 1986.
