JLR plants at Castle Bromwich, Halewood and Solihull accounted for 30% of all domestic cars produced in the UK with 544,401 vehicles made.
Nissan Sunderland was second and took the title of busiest single car plant with 507,444 vehicles made on Wearside in 2016.
Mini’s Hams Hall factory in Oxford ranked third with 210,973 cars produced. Toyota Burnaston; Honda Swindon; and Vauxhall, Ellesmere Port completed the top six.
JLR’s production output increased by 11% compared to 2015. Nissan’s was up 6.5% with Ellesmere Port soaring 38.6% as a new Astra model came on line.
JLR said that growth had been driven by a new and updated line up, including the Jaguar F-PACE and the new Land Rover Discovery.
Andy Goss, JLR global sales director, said: “JLR has once again shown that investment in new models, skills and advanced technology are critically important to ensure Britain has a thriving automotive industry - even in the face of current uncertainty.
“To be the UK’s largest automotive business once again is a tremendous achievement. We are proud to call ourselves a British company and are committed to ensuring manufacturing remains the backbone of the British economy.”
