Giga Shanghai broke ground on January 7, 2019, and delivered its first Model 3s in December 2019.

Tesla Giga Shanghai saw its one millionth production vehicle roll off the production line, less than three years after the plant began production.

Elon Musk, CEO of the US electric vehicle giant, shared the milestone on Twitter Sunday, saying, " Congrats Giga Shanghai on making millionth car! Total Teslas made now over 3M."

Musk's tweet did not show on which day the milestone was reached, though Tesla's official Weibo post on Monday showed that Giga Shanghai's  1 millionth production vehicle rolled off the line on August 13.

The Tesla Shanghai plant project is the first wholly foreign-owned car manufacturing project in China and Tesla's first Gigafactory outside the US. It currently produces the Model 3 sedan and Model Y SUV.

Giga Shanghai began construction on January 7, 2019, and delivered its first Model 3s in December 2019.

Giga Shanghai's annual production capacity reached 250,000 units by the end of 2020 and rose to over 450,000 units in 2021.

In 2021, Giga Shanghai's annual deliveries reached 484,130 units, up 235 percent year-on-year, representing 51.7 percent of Tesla's global 2021 total.

Giga Shanghai's current annual production capacity exceeds 750,000 units, according to Tesla's second-quarter earnings report released on July 20.

That puts Giga Shanghai's capacity above the 650,000 units of the California plant, which has the capacity to produce 100,000 Model S and Model X per year, as well as 550,000 Model 3s and Model Ys.

In addition to these two factories, Tesla's factories in Berlin, Germany and Texas, US both have an annual capacity of over 250,000 units, and they currently only produce the Model Y.

According to several media reports, Tesla upgraded its production line at Giga Shanghai in late July to early August, and the annual capacity will be expanded to about 1.1-1.2 million units after the upgrade is completed.

As a result of that upgrade, Tesla China's production and deliveries plummeted in July.

Tesla China's wholesale sales in July were 28,217 units, down 64.24 percent from 78,906 units in June and down 14.41 percent from 32,968 units in the same month last year, according to data released by the China Passenger Car Association on August 9.

Tesla China exported 19,756 vehicles in July, meaning 8,461 vehicles were delivered to local consumers.

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