Whakaotihia te rerenga e whai ake nei: I te tau 2006, kaore a Klien i angitu i te whakataurite ki tana hoa kapa mohio ake a David Coulthard, i te mea i eke te Brit ki te papa tuatahi o te roopu, a he pai ake i a Klien puta noa i te waa. I te marama o Akuhata 2006, i whakapumautia kaore a Klien e noho ki te tiima Red Bull mo te waa 2007 e haere ake nei, i te iti rawa ranei hei taraiwa whakataetae, na te hainatanga a Red Bull ki a Mark Webber. I muri i te mutunga o ngā tohu e rua i Bahrain me
I Tiamana, kaore i tino mohio ki te waahi ka haere a Klien i muri mai i tana mahi whakataetae, ko te whakapae i kii ko Amerika te kowhiringa whaitake mo te Austrian, engari i paopao ia ki te noho ChampCar i roto i te roopu i tautokohia e Red Bull mo te 2007, i pai ki te whai i tetahi waka Formula Kotahi me tetahi atu roopu. I te mutunga, i kii te tiima kua paahitia a Klien mo nga whakataetae e toru whakamutunga o te waa hei painga mo te taraiwa whakamatautau a Robert Doornbos.