Volkswagen will be contacting the owners of certain 2013-2015 Audi A8 and S8 vehicles because of a problem affecting the fuel system.

According to the NHTSA defect report, the high pressure fuel pump supply line could become porous and deteriorate from the inside. The resulting fuel leak may lead to a fuel smell withing the vehicle cabin and a potential fire in the presence of an ignition source.

Audi will be asking owners to return to their dealers to have the fuel line replaced. Volkswagen’s number for this recall is 20AV and the NHTSA campaign number is 18V-430.