Dave Sparks, also known as "Heavy D" from the Diesel Brothers, was arrested in October 2025 in Salt Lake City, Utah. The arrest was due to a bench warrant issued after he failed to pay around $843,000 in fees related to a Clean Air Act lawsuit filed by Utah Physicians for a Healthy Environment. The lawsuit accused Sparks and his partners of modifications to diesel vehicles that caused excessive pollution, violating environmental laws. Sparks was found in contempt of court for ignoring multiple orders related to this case. After his arrest, a judge ordered his release upon an agreement for certain information to be provided to the plaintiff within a specified time frame. Sparks has addressed the situation publicly, admitting mistakes early in his business related to diesel modifications but also emphasizing his intent to resolve the matter. His attorney has stated that the arrest was not for a crime but a civil matter linked to the lawsuit. Despite the legal troubles, Sparks remains a popular figure with millions of followers across social media and continues efforts to rebuild his reputation and business operations compliant with legal requirements.