According to a recent report, new vehicles equipped with defective airbags supplied by Takata continue to be sold by Toyota Motor Corp, Fiat Chrysler Automobiles, Volkswagen AG and Mitsubishi Motors Corp.

The report’s author, U.S. Senator Bill Nelson, indicates that automakers are relying on the faulty airbags as they work to address engineering and supply challenges. Vehicles that include the airbags are able to be legally sold but must be recalled by 2018.

“What’s troubling here is that consumers are buying new cars not realizing they’re going to be recalled,” Nelson said in a prepared statement. “These cars shouldn’t be sold until they’re fixed.”

According to the report, the exact number of new cars being sold with the defective airbags is unknown. Vehicles currently being delivered with the airbags include the 2016-2017 Mitsubishi i-MiEV, 2016 Volkswagen CC, 2016 Audi TT and the 2017 Audi R8.

The NHTSA, which has not responded to the Nelson report, has earlier stated that the airbags do not pose an unreasonable risk and that vehicles equipped with the airbags are safe to drive.

The Takata airbags are suspected in 13 deaths and more than 100 injuries worldwide.