 It was not an evolution of the previous year's TF107; instead it had been designed from an evolution of the TF106, used for the 2006 season.Pascal Vasselon, the team's chassis general manager noted that the "primary aerodynamic design philosophy for the TF108 is geared towards optimising the entire package".The car also had the new for 2008 higher headrests around the drivers head and also had the new standard McLaren Electronic Systems ECU that prevented the car having driver aids.