The switch from a traditional braking system at the rear of the Gen3 car to an electronic system operated by the motor on the rear axle has forced a new avenue of development, with teething issues for a number of manufacturers.
New Envision recruit Sebastien Buemi endured a high-profile crash on the final day of testing at Valencia known to be connected to an issue with the braking system - while Jaguar's Sam Bird also hit the wall in private testing at Calafat.
