According to a study done by the Insurance Institute for Highway Safety, more males have died in automobile crashes from 1975 through 2007. Why? Men typically drive more and take more chances such as speeding and driving drunk. The study can be viewed here.
The article has some very interesting facts regarding the statistics relating to males and females in car crashes. For example, "Almost one-third of all motor vehicle crash deaths in 2007 were females. Females accounted for 29 percent of passenger vehicle driver deaths, 47 percent of passenger vehicle passenger deaths, 30 percent of pedestrian deaths, 12 percent of bicyclist deaths, and 9 percent of motorcyclist deaths."
Check ou the study for more interesting statistics.