The State Administration for Industry and Commerce, China's market watchdog, has reported an 11.1 percent rise in consumer complaints last year, with the most received for automobile parts and servicing and mobile phones.

The total number of complaints filed with the SAIC hit 12.9 million, a five-year high.

Most individual grievances focused on quality, contracts and post-sales services, with high rises too in the quality of contracts and on allegations of misleading advertisements.