Top 10 Biggest Manufacturing Factories 

 #10. Mitsubishi Motors Okazaki Plant Japan 

Covering 1.8 million square feet, Mitsubishi Motors’ plant in Okazaki, Japan, produces models like the Eclipse Cross and Outlander. This facility is a key domestic production site for the company, integral to its supply chain in Japan.

 #9. Toyota Motor Manufacturing,Kentucky,USA

The largest of Toyota’s manufacturing plants outside of Japan, this 7.5 million square foot automotive factory in Georgetown has been operational since 1988. Manufacturing premium Toyota vehicles such as the Avalon, Camry and Lexus ES.

 #8. Nissan Motor Company Plant, Smyrna,US

One of Nissan’s key manufacturing plants in North America, its Smyrna, Tennessee plant produces iconic vehicles like the Altima, Maxima and Rogue. Producing more than 640,000 vehicles annually, this 6 million square foot facility began operations way back in 1983.

 #7. Kia Motors Hwaseong Plant,South Korea 

Operational since 2009, Kia’s automotive manufacturing factory in Hwaseong, South Korea produces models like the Seltos, Sportage and K5. A major manufacturing facility for Kia that plays a significant role in its global production network, the factory produces a wide range of vehicles with smart technology and design features

 #6. Foxconn Longhua Plant,Shenzhen,China

Foxconn’s Longhua factory, located in Shenzhen, China, has been operational since the early 2000s. Best known for assembling Apple iPhones, this electronics manufacturing plant is integral to the electronics global supply chain

 #5. Tesla Shanghai Gigafactory, China 

Based in Shanghai, Tesla has a Gigafactory dedicated to electric vehicle and battery production. One of the manufacturer's major international factories, the Gigafactory is spread over 9.3 million square feet and produces the Model 3 and Model Y vehicles for the Chinese market.

 #4. Boeing Everett Factory,Washington,USA

Officially the largest building in the world by volume, the Boeing Everett Factory in Washington was originally built in 1967 for construction of the company’s iconic 747 aeroplane. Today, it produces a diverse range of Boeing commercial aircraft, including the 747, 767, 777 and 787 Dreamliner.

 #3. Tesla Gigafactory, Nevada,USA

This Tesla Gigafactory, located in Sparks, Nevada, is a leading electric vehicle and battery manufacturing plant. Sixteen city blocks long with a length of 4,300ft, this colossal factory is one of the largest buildings by footprint in the world.

 #2. Hyundai Motor Company Ulsan factory,South Korea 

Located in Ulsan, South Korea, this Hyundai Motor Company factory produces more than 1.5 million vehicles annually, making it the largest in the world by production volume. Incorporating advanced smart factory technology into the mass production of Hyundai’s cars and trucks, the Ulsan factory produces models like the Elantra, Tucson and Sonata

 #1. Volkswagen Wolfsburg Plant,Germany 

Volkswagen’s Wolfsburg Plant in Germany is one of the largest and most innovative manufacturing facilities in the world. A key hub for the automotive manufacturer, the Wolfsburg plant was established back in 1938 and primarily produces popular Volkswagen models like the Passat, Tiguan and Golf.