Morgan Elijah Yarbrough, 25, of Powder Springs has been charged with aggravated assault intent to murder, aggravated battery and first-degree arson, all felonies.
The attack occurred just after 2 a.m. at the B.P. Station at 575 Barrett Parkway, near Interstate 75.
According to investigators, Yarbrough was arguing with his former girlfriend when he doused her with gasoline from one of the pumps and ignited it. The suspect then fled in a black 2007 Dodge Charger R/T bearing Georgia tag AXC 8713.
The woman, whose name was not released, is being treated for severe burns, police said.
Yarbrough turned himself in at the Cobb County Police Department at 3 p.m. Wednesday.
This is not the first such attack in Cobb County.
In 2008, Anjail Muhammad of Gadsden, Ala., was convicted in Cobb Superior Court and sentenced to life in prison after being convicted of killing her girlfriend in 2003 by dousing her with gasoline and lighting it at a Chevron gas station in Marietta. The victim in that case, Nodiana Antoine, spent about six weeks in the burn unit at Grady Memorial Hospital before she succumbed to her injuries.
Cobb police can be reached at 911 or (770) 499-3945.