Several drivers in east China's Zhejiang Province complained on Sunday that their vehicles repeatedly stalled after filling up with gasoline at a Sinopec gas station near Wenzhou, National Business Daily reports.

A test conducted by a repair technician found gasoline from one of the vehicles had a water-to-gas ratio of about 2.8 percent.

The drivers suspect the gasoline was mixed with water to increase volume and reduce cost. Staff at the gas station has denied these claims. They said previous maintenance work on gas station might have caused the problem.

Sinopec has promised to compensate drivers for losses caused by the faulty gas. The company is investigating the incident and will publish its findings on June 1, the director of Sinopec's Wenzhou branch said.

The Xishan gas station was remodeled in April and reopened on May 24, a station employee said. The incident was probably caused by improper disposal of test water used during construction or maintenance of the submersible pump.

《每日经济新闻》报道称，5月29日上午，多辆轿车在温州西山加油站加完汽油后，汽车出现熄火现象。

之后，4S店维修人员对其中一辆车进行检测，结果表明，该车的汽油的含水率达2.8%。

众多司机质疑中石化在汽油中故意掺水，加油站工作人员对此予以否认，表示“可能是加油站在修理过程中出现了问题”。

温州分公司政工部李主任表示，公司目前已向车主承诺对损失车辆负责，正在加紧调查，6月1日会公布事故具体原因。

加油站工作人员称，今年4月16日起，中石化西山加油站进行油气回收改造，5月24日才恢复营业；可能是由于加油站改造或潜油泵维修的问题引起了上述事件。