- Number of vehicles in your fleet
- Cost of converting existing engines
- Cost of purchasing new vehicles
- Routes and distances covered
- Servicing costs
- The effect of future carbon taxes
LNG vehicles typically cost more than $80,000 above the cost of a conventional diesel vehicle, however there are many advantages of running heavy duty vehicles with LNG. The most important of which is the stable cost of LNG. Some transport operators will find that the cost of converting their fleets to LNG can be recouped in a relatively short period of time.
Engine Options
As the market for LNG fuelled heavy duty vehicles grows, the options and types of engines available has grown over the past few years. The current LNG engine technologies are detailed in the table below:
| Manufacturer | Model | Potential Applications |
| Kenworth (HPDI engine) | T408 & T908 (15 L engine) | Line haul applications |
| K108 (15 L engine) | Regional haul applications | |
| IVECO | ACCO (8.3 L engine) | Waste collection |
| ACCO (8.9 L engine) | Concrete agitators | |
| Powerstar (15 L engine) | Line haul applications | |
Volvo Commercial Vehicles (Westport) |
Mack Granite (8.9 L engine) | Waste collection |
| Concrete agitators | ||
| ISUZU | NPR series trucks (250 & 300) | Urban delivery |
| FSR series trucks (700 & 850) | Courier/taxi trucks | |
| Clean Air Power | Aftermarket LNG Conversions | Line haul |
| Regional haul |