The line graph illustrates the average time taken by four US-based car manufacturers to produce a vehicle from 1998 to 2002.
Overall, while most companies saw a general decrease in production over period time, Ford experienced a slightly increased tendency. At the beginning of time, Nissan was the highest time-consuming vehicle, but now, it has become a faster company compared to other countries. In contrast, Daimler Chrysler was the slowest production business mainly while checking.
Between 1998 and 2002, both Nissan and General Motors had a significant reduction in production time. Although Nissan had the longest manufacturing in the first year, which had decreased production duration from approximately 37 hours per vehicle to only 21 hours in 2002, marking the largest improvement in four companies. Similarly, GM reduced its production time to just 24 hours compared to 32 hours, at the first stages.
In contrast, Ford and DC demonstrated the slowest change in their production timelines. DC started at 34 hours per vehicle and reduced about 31 hours in the next year, which maintained this rate for 3 consecutive years until reducing to 28 hours, the highest in four manufacturing in 1999. Ford was the quickest company, having continuously the slowest production time from 1998 to nearly 2000. However, production time of Ford gradually increased, and reached a peak of nearly 28 hours in 2001, before slightly reduced in the last year.