The average greenhouse gas footprint of nylon in manufacturing carpets is estimated at 5.43 kg CO2 equivalent per kg, when produced in Europe. This gives it almost the same carbon footprint as wool, but with greater durability and therefore a lower overall carbon footprint.[72]

Data published by PlasticsEurope indicates for nylon 66 a greenhouse gas footprint of 6.4 kg CO2 equivalent per kg, and an energy consumption of 138 kJ/kg.[73] When considering the environmental impact of nylon, it is important to consider the use phase.

https://en.wikipedia.org/wiki/Nylon