| Pollutant | CO | HC | NOX |
| 1995 CALIFORNIA TEST STATION REQUIREMENT 2500 RPM NO LOAD | 1.2 % | 220 PPM | 350 PPM |
| HAMILTON TEST CENTER RESULTS V8 @ 40 MPH 20 HP 3-WAY CATALYST AFTER 50,000+ MILES | 0.5 % | 50 PPM | 800 PPM |
| HAMILTON TEST CENTER RESULTS V8 @ 40 MPH 20 HP NO TREATMENT | 5.5 % | 350 PPM | 3600 PPM |
| ROTAPOWER ENGINE DYNO TESTS 5301 @ 3600 RPM 20 HP NO TREATMENT | < 0.03 % | < 9 PPM | < 50 PPM |
| ROTAPOWER ENGINE DYNO TESTS IN EQIUVALENT GM/MI @ 40 MPH 20 HP NO TREATMENT | < 0.49 gm/mi | < 0.015 gm/mi | <0.08 gm/mi |
| Pollutant | CO | HC | NOX |
| 1995-96 PAX @50,000 MI | 3.4 gm/mi | 0.25 gm/mi | 0.4 gm/mi |
| 1997 | 1.7 gm/mi | 0.04 gm/mi | 0.2 gm/mi |
| 1994 | Same as 1997 | Plus 2% fleet | ZEV or EZEV |
| EQUIVALENT ZERO EMISSION | 0.17 gm/mi | 0.004 gm/mi | 0.02 gm/mi |
| PROJECTED ROTAPOWER ENGINE IN HYBRID VEHICLE WITH 3-WAY CATALYST | < 0.049 gm/mi | < 0.0015 gm/mi | <0.005 gm/mi |