Lewis Hamilton says he can't give any more focus or effort than he currently is as he tries to close the gap to team-mate Nico Rosberg at the Hungarian Grand Prix.

Rosberg leads the championship by 14 points after his victory in Germany, with Hamilton limited to third place having started the race 20th on the grid. Hamilton has an impressive record in Hungary having won on four occasions already, but he said he is taking nothing for granted and working as hard as possible to try and reduce the deficit.

"The Hungarian Grand Prix is always a special one for me, with four pole positions and four wins from my seven races there so far - including my first victory for Mercedes last season," Hamilton said. "I don't really have any secrets there - I've just been very fortunate over the years and it's a circuit I really enjoy. It's one where you can really attack, which works for an attacking driver like myself, so perhaps it suits my driving style a little bit more than some others.

"I've always had great support there from the fans too, so I'm looking forward to it. I'm doing absolutely everything I can to get back on level terms with Nico in the title battle - I can't focus more or work harder than I am doing right now. This Championship is proving a big challenge for me but that's how I love it - and I wouldn't have it any other way."

Executive director (technical) Paddy Lowe expects another close fight between Hamilton and Rosberg despite their differing records at the Hungaroring.

"Lewis has a fantastic record at this particular venue, with four pole positions and four wins from his seven races here," Lowe said. "Nico, by contrast, has had a tough time in Hungary in previous years. However, judging by his performance in Germany last weekend we should be set for another fascinating battle between the two drivers.

"As a team, we will approach this race as we would any other as we look to cap off a strong start to the season with an equally strong result heading into the summer break."