| Vehicle | Model Year | Gases | unfiltered | With filter | % Rem. | |
| CORSA | 2007 | CO | % Vol | 0.02 | 0.02 | 0 |
| HC | ppm | 12 | 8 | 33 | ||
| CO2 | % Vol | 16 | 15.80 | 1 | ||
| NOx | ppm | 180 | 19 | 89 | ||
| Nissan Tsuru | 1997 | CO | % Vol | 0.69 | 0.69 | 0 |
| HC | ppm | 173.2 | 159.8 | 8 | ||
| CO2 | % Vol | 11.96 | 11.89 | 0.6 | ||
| NOx | ppm | 99.6 | 30.4 | 70 | ||
| Nissan Tsuru | 1999 | CO | % Vol | 0.05 | 0.04 | 20 |
| HC | ppm | 7 | 6.9 | 2 | ||
| CO2 | % Vol | 12.4 | 9.7 | 22 | ||
| NOx | ppm | 456 | 110 | 76 | ||
| Nissan Tsuru | 2008 | CO | % Vol | 0.5 | 0.02 | 96 |
| HC | ppm | 8 | 6.7 | 16 | ||
| CO2 | % Vol | 16 | 11.02 | 31 | ||
| NOx | ppm | 19 | 17.7 | 7 | ||
| Chevrolet Chevy | 1998 | CO | % Vol | 0.7 | 0.44 | 37 |
| HC | ppm | 128 | 115 | 10 | ||
| CO2 | % Vol | 18.5 | 11 | 41 | ||
| NOx | ppm | 84 | 6 | 93 | ||