What is the percentage of pollution urban sprawl has caused?

Urban sprawl contributes significantly to pollution, but quantifying its exact percentage can vary based on location and specific studies. Generally, it is estimated that urban sprawl can increase vehicle emissions and related air pollution by 10-30% due to increased reliance on cars and longer commutes. Additionally, sprawl can lead to habitat destruction and increased runoff, which further exacerbates environmental degradation. Overall, the impact of urban sprawl on pollution is substantial but varies by region and context.