An antifreeze cartridge includes a container containing an antifreeze agent, and a sealing film on the container. A connecting structure is configured and intended to be connected by force fit or form fit to a complementary receiver of an antifreeze inlet of a motor vehicle. The container has a handling portion which is configured and intended to allow the manual connection of the connecting structure to the complementary receiver of the antifreeze inlet. The sealing film is configured and intended to be perforated by a hollow perforation element of the antifreeze inlet so that the antifreeze agent contained in the container can be supplied to a frost-protection system of the motor vehicle through the hollow perforation element. A motor vehicle has an antifreeze inlet wherein the antifreeze inlet is accessible from the outside of an engine bay of the motor vehicle without opening a hood of the motor vehicle.