and became a formidable challenger to McLaren's dominance. McLaren used the MP4/6 chassis, now designated MP4/6B for slightly modified front wing aerodynamics
The McLarenMP4-21 was the car with which the McLaren team competed in the 2006 Formula One World Championship. It was driven initially by Kimi Räikkönen
The McLarenMP4-20 was the car with which the McLaren team competed in the 2005 Formula One World Championship. The chassis was designed by Adrian Newey