Suzuki, Japan's leading minivehicle maker, reported a 27% jump in interim operating profit on Friday, helped by surging sales in Asia and aggressive cost-cutting, according to Reuters.

The results put Suzuki, one-fifth owned by General Motors and the nation's fourth-largest car maker by market value, well on track to post record profits for the full year, the report added.

Reuters said consolidated operating profit grew to 48 billion yen ($US435 million) for the six months to September 30 - a result also boosted by the inclusion of Indonesia's PT Indomobil Suzuki International (ISI) into its consolidated accounts.

Although numbers were inflated by the addition of ISI, Suzuki reported Asian car sales rocketed nearly 50% to 264,000 units in the first half as production climbed in India, Indonesia, China and Pakistan, Reuters said.

The news agency said motorcycle sales also jumped in Asia for Suzuki, the world's third-largest motorbike maker, nearly climbing four-fold on strong demand in countries like Indonesia and Thailand.

Reuters noted that the performance in Asia made up for a shaky showing in North America, where Suzuki posted an operating loss, and a decline in sales at home, where it had a bumper first half last year.

Net profit jumped to 25 billion yen, a 146% rise over last year's first half when Suzuki booked an extraordinary loss for gaining greater control of Maruti Udyog Ltd, India's dominant car company, Reuters said.

Healthy first-half results had been expected after a strong first quarter and Maruti posted sturdy quarterly net profit, the news agency said, and Suzuki maintained its full-year forecast of a 13% climb in net profit to 35 billion yen although analysts generally expect the minivehicle maker to top that.

Reuters said hopes are high for the newest version of its WagonR minivehicle, which was launched on September 30 as well as for a continued strong performance in Asia.

In India, where Suzuki controls 54% of Maruti, analysts forecast the Indian car maker's sales volumes to surge this year as consumers upgrade from motorcycles to cars and as roads improve, Reuters said.

But managing director Takao Hirosawa cautioned against too much enthusiasm, Reuters noted.

"We are on track with our plans for Maruti but there are still many areas for improvement. It's probably best to take a somewhat cautious stance on profits there," he reportedly told a news conference.

Reuters said that, in North America, Suzuki performed badly in all segments - cars, motorcycles and all-terrain vehicles - as marketing and incentive costs grew but Hirosawa said the company was keen to post an operating profit there for the full year.