| Technology | Engine/Power plant | Transmission/Drive System | Hybrid Battery Replacement | |||
|---|---|---|---|---|---|---|
| Hours* | Cost | Miles | Cost | Miles** | Cost | |
| Diesel | 20,000 | $17,500 | 100,000 | $7,900 | NA | NA |
| CNG | 20,000 | $22,500 | 100,000 | $7,900 | NA | NA |
| Diesel Hybrid | 22,000 | $12,500 | 200,000 | $7,000 | 200,000 | $30,000 |
| Fuel Cell | 10,000 | $100,000 | 200,000 | $7,000 | NA | NA |
| Fuel Cell Hybrid | 10,000 | $100,000 | 200,000 | $7,000 | 200,000 | $30,000 |
* To calculate mileage interval multiply by 12.4 mph = 250,000 mi for a diesel or CNG bus and 275,000 mi for hybrid
** Nickel-metal hydride and Li-ion batteries are expected to last 6 years in a hybrid propulsion system