...we should probably look at the prevalence of the object and the number of deaths associated with it.

Number of Automobiles in US: 253 million
Number of Fatal Automobile Accidents: 32,675
Fatality Rate: 32,675 / 253,000,000 = .000129

Number of Firearms in US: 310 million
Number of Gun-Related Deaths (11,208 homicides + 21,175 suicides + 505 fatal accidents): 32,888
Fatality Rate: 32,888 / 310,000,000 = .000106

You might argue that automobiles get "used" more than guns, which is obviously true -- but their more frequent use is also part of what makes automobiles more inherently deadly.

Regardless of intent, the likelihood that any one automobile will be involved in a person's death is greater than the likelihood that any one gun will be involved in a person's death.