| Pollutant | Emission (g∙km−1) Natural Gas | Emission (g∙km−1) Diesel (50 km∙h−1) |
| CO | 1.0 | 1.2 |
| NMVOC | 1.0 | 0.2 |
| NOx | 2.5 | 6.2 |
| PM10 | 0.005 | 0.121 |
| SO2 | 0.00 | 0.15 |