Takata reportedly stopped safety audits, from 2009 to 2011, at the plants where it makes airbags. The safety audits were suspended in facilities in Moses Lake, Washington and Monclova, Mexico.

The company assembles airbags at the Monclova plant while it manufactures inflators in Moses Lake, ET Auto.com reported, citing AFP.

The audit was suspended in order to cut costs, according to a staff report for US senator Bill Nelson. There were serious quality problems at these facilities, the auditors said.

However, Takata said that it regularly conducts reviews of product quality and safety at both the sites, "and at no time were those halted".

"The report contains a number of inaccuracies based largely on old media articles that Takata has previously refuted, and emails that are taken out of context and characterised in ways that creates a false impression. For example, the global audits referenced in the emails relate to the safe handling by employees of pyrotechnic materials - they were not, as the report implies, related to product quality or safety," the company said.