The loss was a result of the closure of its Russian operations in the wake of Moscow's invasion of Ukraine.
The previous margin record was set in the second-half of 2017, when it stood at 7%.
Renault aims to reach an 8% margin by 2025 and 10% by 2030.
The French carmaker on Wednesday agreed with Nissan (7201.T) on a new structure for their decades-old partnership.
The Japanese group will invest up to $663 million in Renault's planned electric unit Ampere, while the French carmaker will reduce its Nissan stake to put their relationship on equal footing.
Persons:
Luca de Meo, Victor Goury, Gilles Guillaume, Kirsti Knolle, Sharon Singleton
Organizations:
Renault, TECH Electric, Peugeot, Citroen, Nissan, Volkswagen, Thomson
Locations:
Dacia, Ukraine, French