Gunpoint carjacking in Adelaide

A couple have been ordered out of their ute at gunpoint in an Adelaide carjacking.

Two men armed with a handgun and a knife approached the couple sitting in their parked car in Elizabeth Downs on Sunday night.

They ordered the couple to hand over their phones and cash and get out before taking off in the ute.

One of the thieves is described as having a shaved head, brown goatee and strong Australian accent.

The ute, last seen on Midways Road, has SA number plates XRT407.