The firm said vehicle assembly was no longer “required” and cars would arrive “fully built ready for distribution”, reports The BBC.
MG said there would be 25 redundancies, but sales, marketing and after-sales operations would remain at the plant.
The first new MG for 16 years rolled off the production line in the West Midlands in 2011.
It marked the first large-scale production at the plant since the demise of Rover in 2005.
It will also be end of car manufacturing at the Longbridge plant – which has seen cars built there since since Herbert Austin set up in 1906., although there was a gap in production when MG shut down in 2005.
More than 400 design engineers and other staff at the SAIC Motor Technical Centre (SMTC) at the site and MG Motor employees are not affected.
“Centralising production demonstrates MG’s commitment to the future, as well as its continued focus on attracting and developing the highly-skilled automotive engineering and design talent present in the UK,” a spokesman for MG said.
Where possible, production staff would be moved into new roles, the spokesman added.
Two models are currently designed and made the site – MG3 and an SUV, the MG GS – and sales are increasing with the firm reporting a total year on year rise of 18%.
