MotoGP world champion Marc Marquez says Honda is close to a 'solution' for the issues that have left him trailing title pacesetter Valentino Rossi by 65 points after the first part of the season.

Marquez will undertake a test at Misano next week along with team-mate Dani Pedrosa to continue to work with his team before taking a few days off during the series summer break.

The 22-year-old showed signs that he was back to his best with a battling runner-up finish at Assen and signed off with victory at the Sachsenring in Germany on Sunday, where the Spaniard looked like the dominant force of old.

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Reflecting on the first nine races of 2015, Marquez said he briefly doubted himself when he was at his lowest point after crashing out at Catalunya in June following a run of poor results.

"We have an important test next week, but also we must be honest because for this track [Sachsenring] in my riding and for the Honda, it is working good and the corners where we have problems - here there are not many," Marquez said.

"We must work and try to find the correct solution for the second part of the season because I think if we get the solution, we can be much stronger.

"The first part of the season has been difficult because from the beginning from the first race I was fast, but I was fast because I need to be fast.

"But I didn't feel the bike and I didn't have that confidence. Now, already in Assen and here, I am fast and I can play with the bike for try to manage tyres, to manage my weight on the bike," he added.

"During six races when we struggled a lot I say maybe it is my riding style that change a little bit, but now I don't have this doubt and I know that I need to believe in me and in my team and Honda because step by step we are coming stronger."

Marquez points to his spill at Catalunya as his worst moment of the season, but singles out Assen as the potential turning point for his fortunes.

"My worst moment was after Mugello and Montmelo - those two races because I was struggling," he said.

"But the best moment is between Assen and here, but I still say Assen because it was the first race that I start to feel the bike, but worst moment, Montmelo."

Elaborating further on the problems he has faced this year, with Marquez reverting back to his 2014 chassis since Assen, the two-time premier class champion said he is struggling with the rear in high-speed turns where maintaining speed is crucial.

"We have the problems on the corners where you go in fast and you need to keep the speed, that is where we suffer a lot with the sliding on the rear - like here at corner 8 and corner 12 more or less," said Marquez, who gave himself a score of five out of ten in the post-race press conference for his season so far.

"But even like this, already in Assen we were able to manage well because Assen has many corners like this and we were able to manage more and I am happy for this.

"We still have to work because there are a lot of circuits that have a lot of corners like this and I hope next week to find something on this aspect."

Marquez dominated the race from the front in Germany after passing Jorge Lorenzo on lap five but admitted he had considered lying behind the Yamaha rider for a while before making a break for it.

"A race with a battle is nicer, for the fans and also for me because we enjoy more. In one moment I think to stay there [behind Lorenzo] to see, but then I saw that it was not the moment - we will have time in the future to have more battles," he said.

"Today was not the moment because I have the pace and I say ok, I need the victory and I need the 25 points. I pushed and I was clever during all the weekend.

"It was not the most exciting race, but for me it was really important to be constant, especially because in Assen I started to be more constant in the lap time and here I confirm."

Ducati and Suzuki will also attend the Misano test.