Kamui Kobayashi says he is "ready to fight back" in the German Grand Prix after a disappointing weekend at Silverstone.

Having been hampered by problems during both practice and qualifying, Kobayashi was then lucky to avoid Kimi Raikkonen during his big crash on the opening lap of the race. However, while he continued, Kobayashi said the car had sustained damage which made it impossible to try and fight Marussia but he hopes to be more competitive this weekend at Hockenheim.

"For us this will be another race where we aim to fight back against our nearest rivals," Kobayashi said. "We did not see the full performance of the cars in Silverstone for various reasons, particularly for me as I had issues with the car on both Friday and Saturday.

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"Then on Sunday I lost a chunk of downforce when I had to go off-track to avoid the shunt on lap one - that cost me so much laptime. So, I did not have a proper drive throughout the whole weekend! But I'm determined to make sure that all the problems are now gone and I'm ready to fight back in Germany and Hungary."

Team-mate Marcus Ericsson is less confident that Caterham can take the fight to Marussia in terms of outright speed, but says he will focus on finishing the race in case of a high rate of attrition.

"Inside the car I think we know it's going to be another challenging weekend for us in terms of the pure pace, but the team learnt a lot from the two day test we did in Silverstone after the British GP and we'll be looking to put that into practice on track," Ericsson said. "The key thing for me is to make sure we have maximum mileage all weekend, especially on Sunday when we need to be there at the end of the race.

"We've seen this year that the races are very unpredictable and for us that can create opportunities, but if we're not on track when the chequered flag falls we can't take advantage of whatever's happening around us, so that's the main goal."