According to the data, during the past year, IKCO manufactured 480,338 vehicles, which was 21.9 percent more than the output in its preceding year, that was 393,812 vehicles, IRNA reported.
SAIPA manufactured 317,321 vehicles, with a 12.6 percent fall from 363,379 vehicles manufactured in the year to March 19, 2020.
And Pars Khodro manufactured 103,055 vehicles in the past year, showing a 2.8 percent drop from the output of its previous year, which was 106,072 vehicles.
The increase in production means the Iranian car industry is recovering from months of recession that came because of lower demand and closures due to the coronavirus pandemic.
Carmakers around the world have reported historic plunges in output as the pandemic has caused factories and dealerships to close in many countries.
IKCO said in May 2020 that mass production of its fully homemade cars will begin early this year amid efforts to make the automotive industry in the country less vulnerable to foreign sanctions.
IKCO said the K132, a sedan based on its Samand model, will enter the market in February as the first car that would rely on Iranian suppliers for parts and design up to 92.5 percent.
The carmaker said the first version of the car will be equipped with an EC5 engine and a manual transmission, while later models will have automatic transmission and a turbocharged engine.
It said other options on the manual K132 will include power steering, a modern brake system, two front-seat airbags and cruise control.
On fuel efficiency, the model will be equipped with Euro-5 emission-control technology and its average consumption will be 6.7 liters per 100 kilometers, according to the company.