A recent recall by Volkswagen Group to replace a faulty fuel pump flange has prompted a National Highway Traffic Safety Administration (NHTSA) investigation into other automakers that apparently used the same part supplied by German manufacturer Continental.
Continental Automotive notified several automakers and Tier 1 suppliers when it discovered a problem that could allow the flange to crack and leak fuel, increasing the risk of a fire.
The notification inspired VW to issue recalls for the 2015-2017 Porche Macan and the 2013-2017 Audi Q5 and Q7. The VW Group recalls do not reflect the entire population of vehicles equipped with the same component, however.
"The purpose of this investigation is to obtain information from the companies identified in Continental's Part 573 report in order to determine whether any additional vehicles may have the same defect as identified by VW and Porsche, and whether additional safety recalls are required by any of those identified companies," the NHTSA wrote in its investigation notice.
The agency said the defect is estimated to affect more than 456,000 vehicles.
Continental said it also sold the potentially defective parts to automakers including General Motors Co., Ford Motor Co., Fiat Chrysler Automobiles NV, Daimler AG's Mercedes-Benz and Tata Motors' Jaguar Land Rover. To date, no fires tied to the defect have been reported to NHTSA or Continental, spokesmen for the company and the agency said.