Customer team -

A customer team is one who buys their PU from one of the works teams. Not all the teams have the funds, expertise or facilities to develop their own PU’s. The engines must be exactly the same and the works team is not allowed to give themselves an advantage. 

The ability of smaller teams to buy their PU’s, so they can focus on the chassis and logistics is key to ensuring there is a full field

Andrew Burden

The author Kiwi F1 Fan