Volkswagen is checking whether the roughly 32,000 series EA 189 diesel engine vehicles it has sold in Mexico since 2009 provided "altered" emissions data to local authorities, the company said in a statement on Tuesday.
The models are Transporter 2.0 TDI, Amarok 2.0 TDI, Vento 1.5 and 1.6 TDI, Jetta Generation 4 (Classic) 2.0 TDI Bora 2.0 TDI, New Jetta Generation 6 2.0 TDI, Audi Q3 2.0 TDI (2015) and Audi A4 2.0 TDI.
"All these vehicles have been approved in Mexico in accordance with current Mexican regulations," Volkswagen said.
Volkswagen has admitted to cheating in diesel emissions tests in the United States, prompting the worst crisis in its 78-year history, which has sent shockwaves through the global car industry.
Earlier this month, Mexico said it was reviewing whether Europe's biggest carmaker had complied with its emissions standards and would act if it finds anomalies.
Volkswagen said it would inform its Mexican customers, authorities and the public if there is a need for "corrective measures."