A photo of a speedometer with the dollar sign instead of mph / kmh.

Historically, the price per gallon of propane is 30-40% less expensive than a gallon of gasoline and 50% less expensive than a gallon of diesel as propane is a by-product of the gasoline refining process.

Despite the initial purchase price of a propane vehicle, overall total cost of ownership of it will be less than that of a diesel vehicle. Not only are there government incentives to help offset your initial purchase price, the lower maintenance costs and lower fuel prices will also contribute to your quicker return on your investment.