Low end tata car's build quality is very bad. Not any better than Maruti. Tiago interiors literally vibrate and has finishing issues even after so many iterations.
I too met with similar accident. There were 5 cars and my car is the 3 rd one. Due to tata build quality no injury for my family. But car got damaged both side, but comparatively less compared to other cars. Thanks to TATA.
Have some Little brain...that's now how you measure the build quality....back side will be same for all the cars...even if it's tata or audi....it's based core structure of the car and not the later of the car...
All cars are tested for frontal collision only and are made sturdy in front. Rear protection is last priority as the big vacant boot should absorb the impact. Even a Tata car from the rear will be smashed.