The following analysis is based on published data on all production cars of 2006, looking at power, weight acceleration and emmissions.
Each point on the chart represents a particular model of car.
|Looking at just acceleration against power shows a clear relationship between the two but there is a wide spread especially in the region 100 to 200 bhp. At 150 bhp the 0-60 times of production cars vary from around 5 to 15 seconds.||If instead we look at power to weight ratio the variance closes significantly revealing a more distinct curve. In this case cars with
150 bhp/ton have a 0-60 time of between 6 to 8 seconds, typically around 7.
If you know the power to weight ratio of any car you will have a pretty good approximation of it's 0-60 time from the equation t=350*(p^-0.78). Where p = power to weight ratio.
|To see the efficiency a particular car is for it's level of performance we compared the emissions with it's 0-60 time. If the point falls below the line then it is more efficient than average for the level of performance.|
Some popular engines...
|Engine||Power (bhp)||Emissions g/km|
|Fiat 1.2 16v||80||142|
|Fiat 1.4 16v||95||142|
|1.4 K series 16v||103||164|
|1.6 K series 16v||111||172|
|1.8 K series 16v||120||173|
|1.8 K series 16v VVC||160||179|
|Ford Ka 1.3 EFi||70||163|
|Citreon C2 1.4||75||143|
|Ford 1.4 16V||80||169|
|Clio 1.4 16v||95||155|
|Citreon Saxo VTS||120||194|
|Citreon C2 1.6||125||163|
|Alfa 1.8 TS||140||195|