On-road diesel

Pakistan has only one diesel grade for automotive purposes, with its specification published by the Pakistan Standards & Control Authority.

On-road diesel, also known as high-speed diesel (HSD), sold in Pakistan must conform to diesel standard PS:344-2009. This standard, effectively implemented from November 2009, sets specifications for the regular diesel grade.

Under PS:344-2009, a maximum of 10,000 mg/kg sulfur is allowed. At the end of 2011, the Pakistani government directed all automotive companies and relevant industries to implement Euro 2 emission standards by July 2012. The government also reduced the sulfur content in HSD from 10,000 mg/kg to 6,000 mg/kg. However, the diesel standard remained the same.

In 2017, the government decided to reduce the maximum sulfur in im