He was a 17-year-old from Roslindale, state police said.
The crash happened on the northbound side of Morrisey Boulevard shortly after 3 a.m. on Jan. 4 near UMass-Boston.
There were four teens inside the 2013 Hyundai Accent, which was reported stolen out of Jamaica Plain and traveling at a high speed just before the crash, police said.
Officers also found a gun in the wreckage.
A 15-year-old boy from Mattapan and a 14-year-old boy from Dorchester also died in the rollover crash.
A fourth 15-year-old boy from Dorchester suffered non-life-threatening injuries and is expected to recover, according to authorities.
State police are investigating the crash.
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