Renault is expecting a boost in performance as a result of new fuel from Total at this weekend's German Grand Prix.

Following a disappointing Austrian Grand Prix, Renault's power unit was more competitive at Silverstone as Daniel Ricciardo finished third for Red Bull and Sebastian Vettel fifth. With Total bringing a new fuel to Hockenheim and Renault having been able to test software upgrades during the in-season test a week ago, Renault Sport F1 head of track operations Remi Taffin is expecting a step forward as a result of the combination of the two.

"We're going to Hockenheim in a good frame of mind," Taffin said. "We aim to be on the form we showed in Canada and Silverstone. Our confidence is increased by the new software tested last week in Silverstone and fuel from Total that should bring additional performance per lap."

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However, Taffin admitted Renault is expecting cooling to be a big challenge this weekend and says the engine manufacturer will be working hard to prevent any overheating problems.

"Hockenheim will be the fourth power track in a row after Canada, Silverstone and Austria. Approximately 65% of the lap is spent at full throttle thanks to the four long straights, the longest of which is over 1km long. The ICE, turbo and MGU-H will therefore be under enormous pressure, particularly since drivers will reach over 290kph on three occasions (or over 300kph on two occasions) during the first two thirds of the lap.

"Unlike Silverstone, however, the straights are linked by medium to low speed corners such as the Hairpin and the old Stadium complex. Energy recovery under braking is therefore relatively easy, which is good news as far as carbon fuel consumption is concerned.

"With such large loads going through every part of the Power Unit, everything will get very hot. The expected high ambient temperatures will only compound this challenge. To prevent against any potential overheating issues we'll run a different cooling configuration and use the PU elements in a slightly different way. For example, we may run a 'mix and match' system using components at different stages in their life cycle. This race will also be a good warm up for the very hot temperatures we'll see in Hungary just a week after."