Nicholas Speeks, China sales head at Daimler AG's Mercedes-Benz, told reporters the firm was also currently cutting service charges and prices of its spare parts by 20 percent.

Bloomberg reported last week citing sources the National Development and Reform Commission was probing practices at Daimler AG's Mercedes-Benz as well as other foreign automakers to see whether prices of spare parts are being artificially boosted.

A senior NDRC official said in February that the monopolies regulator has been collecting evidence of possible anti-competitive behaviour in the country's auto parts market.

(Reporting by Samuel Shen and Kazunori Takada; Writing by Brenda Goh)