The line graph illustrates the time required to produce vehicles by four US-based car manufacturers, namely Nissan, Daimler Chrysler, General Motors and Ford, between 1998 and 2002.
Overall, it is clear that there was a downward trend in production time among most manufacturers, with the exception of Ford, which remained relatively stable. Notably, Nissan showed the most significant decline despite having the highest production time at the beginnig of the period.
If we look at Ford, production time began at just over 26 hours per vehicle in 1998 and increased slightly to about 28 hours between 1999 and 2001, before falling to approximately 26 hours at the end of the period.
By contrast, for Nissan, the figure started at roughly 36 hours in 1998, meaning it had the highest production time among all manufacturers. It then decreased steadily year by year, reaching a low of around 22 hours in 2002.Turning to Chrysler, after dropping to approximately 31 hours in 1999, the figure remained stable for the next two years before falling slightly to 28 hours at the end of the period.As for General Motors, the production time declined sharply from about 32 hours to 24 hours over the period.