They used to break the electronic codes of the vehicle by changing the ECM (Electronic Control Module), police said.
Israr (35), Ranjit (33), Jogender (32), and Rahis (26) all natives of Meerut in Uttar Pradesh, Sachin Sehgal (22), a resident of Subhash and Subham (24) from Vikaspuri in New Delhi were arrested, police said.
Four stolen vehicles, a drill machine, two ECM lock key sets and other tools have been recovered from their possession, they said.
Yadav said the gang members would steal vehicles on demand basis and used latest equipments and gadgets to unlock them.
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The other gang confessed to have stolen more than 180 cars, particularly from West District.
Police had got a tip off on last Saturday about three gang members arriving on the service road, behind M2K in Rohini, following which a trap was laid and they were apprehended, Yadav said.
The other gang members were arrested on the same night from K N Katju Marg, he said.