Despite plans to make the Midlands a centre for design and engineering excellence while reviving the dormant Austin marque, doubts remain about the Nanjing bid.
The company has been continually accused of being a lift and shift operation, buying assets and taking them wholesale to China.
Its association with engineering consultants Arup has has fanned the rumours, with Arup having previous experience of moving production lines.
When Fiat executives first arrived in Nanjing to negotiate their joint venture, they found the 1970s Fiat Panda being produced using equipment from the Fiat Mirafiori.
Nanjing bought it third hand from Spain?s Seat, which was itself using cast-offs from the Mirafori factory near Turin.
But a source close to Nanjing has repeatedly insisted the bid is about far more than a lift and shift.
Although the Power-train operation is expected to go to the Far East, a significant operation employing between 1,000 and 2,000 people will stay in the Midlands.
The source said: ?We are not just a lift operation. Some assets will go to China for the volume production of vehicles, but some will remain in Britain for a new sports car and luxury saloon cars.?