The car was launched online on 30 January 2015 on the team's website,[3][4] and it proved to be a vast improvement over the C33.

In the opening round of the season, in Australia, the Saubers qualified in eleventh and sixteenth places, with rookie Felipe Nasr ahead of his teammate Marcus Ericsson.

The most immediate difference can be found in the shorter nose, quite similar in the shape with the ones of the Williams cars, Red Bulls and McLarens.

The car also showed new front and rear wings and a slimmer bodywork; thanks to these upgrades – and the high rate of retirements – Nasr was able to finish in tenth position.

The C34 featured a new blue and white livery along with a new Banco do Brasil sponsorship, resulting from Nasr joining the team.