What province he obtained after his consulship is unknown, but he seems to have been guilty of extortion during his administration, for M. Gratidius brought an action of repetundae against him, and was supported by the evidence of Marcus Aemilius Scaurus; but Fimbria was nevertheless acquitted. During the revolt of Saturninus in 100 BC, Fimbria, with other consulars, took up arms to defend the public good.
The province he received after his consulship is unknown, and it seems he engaged in extortion during his term. M. Gratidius initiated a repetundae lawsuit against him, supported by Marcus Aemilius Scaurus; nonetheless, Fimbria was acquitted. In 100 BC, when Saturninus rebelled, Fimbria, along with other consuls, took up arms to protect public interests.