Renault has committed itself to using six power units in some cars this season as it seeks reliability in the final five races.

The 2014 regulations state that any driver using a sixth power unit component will receive a ten place grid penalty, with Daniil Kvyat the first to receive such a punishment at the Italian Grand Prix. Renault supplies Red Bull, Toro Rosso, Lotus and Caterham, and Sebastian Vettel has openly said that he will need to do the same as Kvyat at some stage.

Renault head of trackside operations Remi Taffin says Suzuka is a track where new power units are required due to the nature of the circuit, and he even believes some teams will limit mileage. However, Taffin says Renault has already committed to using six components where required, with the approach focused on delivering reliability rather than attempting to stretch five across the whole season.

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"Due to the strain on each part, we will, where possible, introduce new components for this race," Taffin said. "Reliability will start to play a major role in results at this point in the season since every team and driver has had to mix and match as we have learnt more on the operation of the power unit. To keep aces in hand, we may even see teams run fewer miles in practice to save the engines for the rest of the year.

"We are however fairly at ease on this front since we have committed ourselves to introduce a sixth power unit where needed. The picture is a lot clearer now and although not exactly ideal to have to introduce new parts and take penalties, we can do this at races where the impact will be minimised. We believe Suzuka will be a good challenge, but one that we are looking forward to with no worries."