You can drive a car with a broken flex but to have consequences. By using the vehicle with a fractured flex pipe creates problems for you and the others. It's difficult to dive into a car with a broken flex pipe because of the smell, noise, and critical aspect of the exhaust pressure. Flex pipe helps me reduce the pressure on the exhaust system. Flex pipe has a particular structure like the braid, and that is why it's called flex. These flexes in the pipe play a significant role in reducing the power over the exhaust system. And so the damage first starts from there. Flexes are made of specific structures from inside, outside, and the breakdown of any other issue may occur from the inside, which everyone has no idea. So it's better to contact the technicians and regularly service your vehicle. A broken flex pipe causes the car's increased pressure and leaks the gas fumes in the air, which is dangerous for you and others.  So try no to drive the car with broken flex pipes and contact the professional as soon as possible to resolve your problem and enjoy safe driving.