Japanese carmaker Nissan on Monday admitted some of their manufacturers had deliberately altered data on exhaust emissions and fuel economy, according to multiple reports.
Nissan discovered the data falsification during an internal review the company ordered following an inspection scandal last year that forced Nissan to recall 1.2 million vehicles.
Those vehicles were recalled after it became public knowledge that, for decades, car inspections had been carried out by uncertified technicians.
Nissan said that company inspectors used “altered measurement values” on emissions inspection reports and the tests “deviated from the prescribed testing environment,” according to a statement from the company on Monday.
“Nissan understands and regrets the concern and inconvenience caused to stakeholders,” the statement said.
The company said recalls were not needed in this instance since the falsifications did not compromise the safety of the vehicles in question.
Nissan added that the latest revelation does not affect cars that were exported overseas as it applies solely to Japanese market requirements.
The internal review reportedly found that all models except the Nissan GT-R, a sports car, complied with safety standards, the New York Times reported.
It is unclear how many cars were affected by the falsifications, according to Yahoo News.
The announcement is another in a string of scandals associated with Japanese carmakers.
Subaru admitted to similar issues in an April report.
Mitsubishi Motors and Suzuki Motors two years ago said they exaggerated the fuel economy of their vehicles, and airbag maker Takata was behind the largest auto recall in history in 2014 after passengers died in crashes with faulty airbags.