The line graph illustrates the average number of hours required to produce a vehicle by four car manufacturers (General Motors, Ford, Toyota, and Honda) in the US between 1998 and 2005.
Overall, General Motors and Ford consistently spent more time producing cars compared to Toyota and Honda throughout the period. However, both General Motors and Ford showed a significant reduction in production time by 2005. In contrast, Toyota and Honda experienced relatively minor fluctuations and remained more stable over the years.
In 1998, General Motors required the most time to manufacture a vehicle, taking approximately 32 hours per unit. This figure steadily decreased over the years, falling to around 24 hours by 2005. Ford also showed a similar downward trend but with more variation. Between 1998 and 2001, the time rose from 28 to 31 hours, before dropping sharply to match General Motors at 24 hours in 2005.
Toyota’s production time was relatively stable, hovering around 22 hours from 1998 to 2001. However, it saw a slight rise to nearly 24 hours in 2002 and 2003 before declining to 20 hours in 2005, making it the most efficient manufacturer by the end of the period. Similarly, Honda’s production time fluctuated between 20 and 24 hours but did not show any significant long-term change.