There are two differences between a real police BMW and the car armed men are using to rob foreigners.
The robbers' car has tinted windows and the call signs are not the same.
The 1 Series BMW with registration BSF 770 B and police call sign RR716 has been used in at least two robberies in Gauteng.
The first robbery was on Wednesday last week when the black BMW pulled over a Chinese man on the M2 highway in Johannesburg.
Police spokesman Lieutenant-Colonel Lungelo Dlamini said six men wearing police uniforms handcuffed the man. They then drove him to his company in Stella Park, Crown Mines, Johannesburg.
"The men placed a plastic bag over his head and demanded cash," said Anderson Lee, chairman of the Chinese Community Police Forum.
The men got away with an undisclosed amount of cash and two cellphones.
The second incident was the next day when, according to Nagesh Chetty, of the Pretoria West Community Policing Forum, the occupants of the same BMW stopped two Pakistanis in Pretoria West.
The robbers made off with cash.
Dlamini appealed to anyone who spotted the bogus police vehicle to phone 086-001-0111.
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