Red Bull chiefs threatened walkout over exhaust saga

Stephan Heublein

Red Bull chiefs threatened to boycott the British grand prix over the blown exhaust scandal, according to German newspaper Bild am Sonntag.

When it emerged that the team's 50 per cent throttle concession was withdrawn before qualifying at Silverstone, Christian Horner was reportedly furious as he hopped between emergency meetings with FIA president Jean Todt and Bernie Ecclestone.