Yes, the Tata Sierra will meet your requirements of safety and comfort very well. In terms of active safety, the Sierra has good grip around corners and good high-speed stability, too. The safety equipment is also elaborate with 6 airbags, electronic stability program (ESP) and after-impact braking standard across variants.
The Sierra is yet to be tested at either GNCAP or BNCAP; however, Tata Motors says the car is designed for a good rating and given the company’s track record, this should be the case. As for comfort, the ride quality is good, and there is ample space inside. The seats, too, are comfy and at the rear, there’s enough space for three to be seated in comfort.