The graph below shows the amount of hours spend for production of one vehicle by 4 companies. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

The graph details the amount of hour used on manufacturing one automobile by Audi, Mercedes, Volvo and Nissan from 1999 to 2006. Overall, while statistics of other three companies had different rates, Volvo remained stable. In terms of Audi, the duration of producing vehicle began with about 32 hours, which was an all-time high rate […]