The company announced the upgrade after growing demands for bespoke upgrades and receiving its third-highest annual sales in 2024, with Bespoke content value rising 10% on average per car on an annual basis.
This will be one of the largest capital injections since the launch of the facility in 2003.
The investment will also support the manufacturing facility for the luxury marque's transition to an all-battery electric vehicle future.
The Goodwood site employs more than 2,500 staff such as engineers and designers. It has reportedly began manufacturing 28 cars a day on average.
Meanwhile, other carmakers such as Stellantis have announced the closure of its van-making factory in Luton in April, with 1,100 jobs at risk. Ford also recently announced that 800 roles across the UK will be cut due to lack of demand in its EVs.