Tata Aeris CNG Sedan: Tata Motors may introduce the updated Tigor compact sedan under the new Tata Aeris name on September 25. The sedan is expected to get a refreshed exterior, upgraded cabin features, petrol and CNG powertrains and an electric version, while the company may also position it as a stronger rival to the Maruti Suzuki Dzire, Hyundai Aura and Honda Amaze.