Exclusive: Tata Tiago, Tigor CNG Variants Spotted Testing 13,774 Views View Photos Highlights Test mules of Tiago and Tigor are based on facelifted models The CNG variants are likely to be introduced later this year After launching Altroz turbo petrol, Tata Motors is looking to add new variants to Tiago and Tigor range in India. The homegrown automaker is currently readying the CNG versions of its popular hatchback and subcompact sedan. And, the company has already initiated public road tests of the CNG-powered Tiago and Tigor. Both the test mules were captured on camera exclusively by us at CNG filling station near Lonavala. The CNG versions are likely to be launched in the country later this year.