Stadler agreed to a deal put forth earlier this month by the district court in Munich for a suspended sentence and a €1.1 million ($1.21 million) fine.
If Stadler chose to not admit his role, he was looking at a one to two-and-a-half-year prison sentence.
The scandal has since cost Volkswagen billions of dollars in settlements and forced it to recall millions of vehicles.
The European Commission in a statement in 2021 said Volkswagen had sold 8.5 million vehicles in the European Union that had been fitted with a device to rig tests.
