2006 Enhanced I/M Program Annual Report and 2005-2006 Biennial Report: Appendix C
| Model Year | Total Vehicles | Initial Test | Second Test | Subsequent (Final) Test | Rec'd Waiver | Waiver Rate | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Passed | Failed | %Failed | Passed | Failed | Passed | Failed | Switched* | Gone** | ||||
| 1981 | 1,161 | 940 | 221 | 19.04% | 129 | 10 | 160 | 12 | 3 | 46 | 5 | 2.26% |
| 1982 | 1,969 | 1,608 | 361 | 18.33% | 225 | 14 | 292 | 24 | 3 | 42 | 13 | 3.60% |
| 1983 | 3,185 | 2,609 | 576 | 18.08% | 379 | 13 | 495 | 21 | 9 | 51 | 8 | 1.39% |
| 1984 | 5,639 | 4,692 | 947 | 16.79% | 613 | 38 | 788 | 51 | 12 | 96 | 23 | 2.43% |
| 1985 | 8,704 | 7,267 | 1,437 | 16.51% | 956 | 30 | 1,224 | 48 | 14 | 151 | 17 | 1.18% |
| 1986 | 13,150 | 11,254 | 1,896 | 14.42% | 1,268 | 46 | 1,608 | 74 | 14 | 200 | 30 | 1.58% |
| 1987 | 19,766 | 17,120 | 2,646 | 13.39% | 1,779 | 59 | 2,214 | 105 | 24 | 303 | 31 | 1.17% |
| 1988 | 24,305 | 21,354 | 2,951 | 12.14% | 2,034 | 66 | 2,514 | 110 | 26 | 301 | 45 | 1.52% |
| 1989 | 34,605 | 30,864 | 3,741 | 10.81% | 2,599 | 77 | 3,194 | 114 | 36 | 397 | 52 | 1.39% |
| 1990 | 48,735 | 43,572 | 5,163 | 10.59% | 3,649 | 109 | 4,424 | 143 | 34 | 562 | 49 | 0.95% |
| 1991 | 53,617 | 48,260 | 5,357 | 9.99% | 3,850 | 101 | 4,581 | 155 | 50 | 571 | 53 | 0.99% |
| 1992 | 68,972 | 62,894 | 6,078 | 8.81% | 4,413 | 86 | 5,261 | 120 | 53 | 644 | 50 | 0.82% |
| 1993 | 82,367 | 75,733 | 6,634 | 8.05% | 4,842 | 97 | 5,752 | 149 | 74 | 659 | 52 | 0.78% |
| 1994 | 90,955 | 85,957 | 4,998 | 5.50% | 3,724 | 77 | 4,332 | 113 | 46 | 507 | 37 | 0.74% |
| 1995 | 114,214 | 108,816 | 5,398 | 4.73% | 3,988 | 80 | 4,611 | 120 | 74 | 593 | 35 | 0.65% |
| Total | 571,344 | 522,940 | 48,404 | 8.47% | 34,448 | 903 | 41,450 | 1,359 | 472 | 5,123 | 500 | 1.03% |
* Final test type is different from the initial test type.
** The final disposition of the vehicle is unknown
| Model Year | Total Vehicles | Initial Test | Second Test | Subsequent (Final) Test | Rec'd Waiver | Waiver Rate | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Passed | Failed | %Failed | Passed | Failed | Passed | Failed | Switched* | Gone** | ||||
| 1981 | 171 | 153 | 18 | 10.53% | 8 | 2 | 14 | 2 | 0 | 2 | 2 | 11.11% |
| 1982 | 434 | 407 | 27 | 6.22% | 21 | 1 | 23 | 2 | 0 | 2 | 0 | 0.00% |
| 1983 | 671 | 620 | 51 | 7.60% | 31 | 2 | 38 | 2 | 2 | 9 | 0 | 0.00% |
| 1984 | 1,193 | 1,077 | 116 | 9.72% | 72 | 1 | 94 | 3 | 2 | 17 | 2 | 1.72% |
| 1985 | 1,976 | 1,777 | 199 | 10.07% | 122 | 9 | 156 | 12 | 7 | 24 | 6 | 3.02% |
| 1986 | 3,386 | 3,083 | 303 | 8.95% | 216 | 6 | 262 | 7 | 1 | 33 | 1 | 0.33% |
| 1987 | 5,444 | 4,998 | 446 | 8.19% | 301 | 10 | 364 | 13 | 13 | 56 | 7 | 1.57% |
| 1988 | 8,131 | 7,230 | 901 | 11.08% | 600 | 25 | 720 | 37 | 23 | 121 | 15 | 1.66% |
| 1989 | 10,098 | 9,076 | 1,022 | 10.12% | 709 | 19 | 865 | 28 | 18 | 111 | 12 | 1.17% |
| 1990 | 10,464 | 9,461 | 1,003 | 9.59% | 691 | 21 | 839 | 39 | 24 | 101 | 19 | 1.89% |
| 1991 | 13,253 | 12,204 | 1,049 | 7.92% | 739 | 19 | 879 | 27 | 31 | 112 | 16 | 1.53% |
| 1992 | 16,570 | 15,261 | 1,309 | 7.90% | 946 | 26 | 1,112 | 34 | 30 | 133 | 18 | 1.38% |
| 1993 | 25,750 | 23,958 | 1,792 | 6.96% | 1,325 | 30 | 1,532 | 37 | 39 | 184 | 13 | 0.73% |
| 1994 | 33,676 | 31,630 | 2,046 | 6.08% | 1,459 | 37 | 1,711 | 51 | 64 | 220 | 19 | 0.93% |
| 1995 | 50,121 | 47,543 | 2,578 | 5.14% | 1,788 | 48 | 2,132 | 65 | 90 | 291 | 29 | 1.12% |
| Total | 181,338 | 168,478 | 12,860 | 7.09% | 9,028 | 256 | 10,741 | 359 | 344 | 1,416 | 159 | 1.24% |
* Final test type is different from the initial test type.
** The final disposition of the vehicle is unknown
| Model Year | Light Duty Vehicles | Light Duty Trucks | ||||||
|---|---|---|---|---|---|---|---|---|
| # of Failed Vehicles | Average G/Mi Emission Reductions | # of Failed Vehicles | Average G/Mi Emission Reductions | |||||
| HC | CO | NOx | HC | CO | NOx | |||
| 1981 | 221 | 1.31 | 27.04 | 1.32 | 18 | 1.37 | 23.51 | 3.62 |
| 1982 | 361 | 1.08 | 18.66 | 1.44 | 27 | 1.78 | 28.10 | 3.29 |
| 1983 | 576 | 0.91 | 15.74 | 1.38 | 51 | 3.03 | 28.64 | 2.70 |
| 1984 | 947 | 0.89 | 19.76 | 1.27 | 116 | 1.58 | 37.92 | 1.67 |
| 1985 | 1,437 | 0.86 | 17.23 | 1.34 | 199 | 1.69 | 27.40 | 1.85 |
| 1986 | 1,896 | 0.87 | 16.05 | 1.30 | 303 | 2.00 | 26.70 | 1.89 |
| 1987 | 2,646 | 0.80 | 14.52 | 1.32 | 446 | 1.56 | 28.80 | 1.78 |
| 1988 | 2,951 | 0.92 | 15.76 | 1.22 | 901 | 1.26 | 18.51 | 1.88 |
| 1989 | 3,741 | 0.89 | 15.97 | 1.19 | 1,022 | 1.28 | 19.93 | 1.93 |
| 1990 | 5,163 | 0.76 | 13.82 | 1.38 | 1,003 | 1.10 | 18.65 | 1.97 |
| 1991 | 5,357 | 0.70 | 13.43 | 1.36 | 1,049 | 1.29 | 22.32 | 1.73 |
| 1992 | 6,078 | 0.72 | 14.87 | 1.29 | 1,309 | 1.22 | 21.63 | 1.78 |
| 1993 | 6,634 | 0.74 | 12.89 | 1.37 | 1,792 | 1.11 | 17.20 | 2.06 |
| 1994 | 4,998 | 0.72 | 12.44 | 1.24 | 2,046 | 1.07 | 15.97 | 2.01 |
| 1995 | 5,398 | 0.76 | 12.94 | 1.14 | 2,578 | 1.12 | 14.72 | 2.09 |
| Total | 48,404 | 0.78 | 14.27 | 1.29 | 12,860 | 1.21 | 18.84 | 1.96 |
| Model Year | Total Vehicles | Initial Test | Second Test | Subsequent (Final) Test | Rec'd Waiver | Waiver Rate | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Passed | Failed | % Failed | Passed | Failed | Passed | Failed | Switched* | Gone** | ||||
| 1981 | 62 | 51 | 11 | 17.74% | 3 | 0 | 7 | 0 | 2 | 2 | 0 | 0.00% |
| 1982 | 72 | 66 | 6 | 8.33% | 4 | 0 | 4 | 0 | 1 | 1 | 0 | 0.00% |
| 1983 | 118 | 106 | 12 | 10.17% | 10 | 0 | 10 | 0 | 1 | 1 | 0 | 0.00% |
| 1984 | 206 | 187 | 19 | 9.22% | 13 | 0 | 13 | 0 | 3 | 3 | 0 | 0.00% |
| 1985 | 323 | 285 | 38 | 11.76% | 27 | 2 | 29 | 3 | 2 | 4 | 0 | 0.00% |
| 1986 | 441 | 392 | 49 | 11.11% | 25 | 1 | 29 | 1 | 8 | 11 | 0 | 0.00% |
| 1987 | 629 | 577 | 52 | 8.27% | 29 | 1 | 33 | 1 | 4 | 14 | 0 | 0.00% |
| 1988 | 707 | 645 | 62 | 8.77% | 35 | 2 | 40 | 2 | 3 | 17 | 0 | 0.00% |
| 1989 | 1,038 | 964 | 74 | 7.13% | 38 | 1 | 44 | 1 | 6 | 23 | 0 | 0.00% |
| 1990 | 1,777 | 1,662 | 115 | 6.47% | 56 | 1 | 72 | 1 | 6 | 36 | 0 | 0.00% |
| 1991 | 2,343 | 2,183 | 160 | 6.83% | 87 | 3 | 92 | 3 | 14 | 51 | 0 | 0.00% |
| 1992 | 3,430 | 3,163 | 267 | 7.78% | 130 | 0 | 148 | 0 | 20 | 99 | 0 | 0.00% |
| 1993 | 4,273 | 3,985 | 288 | 6.74% | 122 | 1 | 142 | 1 | 11 | 134 | 0 | 0.00% |
| 1994 | 4,959 | 4,695 | 264 | 5.32% | 135 | 3 | 145 | 5 | 16 | 98 | 0 | 0.00% |
| 1995 | 7,800 | 7,395 | 405 | 5.19% | 168 | 5 | 184 | 5 | 26 | 190 | 0 | 0.00% |
| Total | 28,178 | 26,356 | 1,822 | 6.47% | 882 | 20 | 992 | 23 | 123 | 684 | 0 | 0.00% |
* Final test type is different from the initial test type.
** The final disposition of the vehicle is unknown.
| Model Year | Total Vehicles | Initial Test | Second Test | Subsequent (Final) Test | Rec'd Waiver | Waiver Rate | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Passed | Failed | % Failed | Passed | Failed | Passed | Failed | Switched* | Gone** | ||||
| 1981 | 70 | 66 | 4 | 5.71% | 3 | 0 | 3 | 0 | 0 | 1 | 0 | 0.00% |
| 1982 | 146 | 130 | 16 | 10.96% | 13 | 0 | 14 | 0 | 0 | 2 | 0 | 0.00% |
| 1983 | 175 | 146 | 29 | 16.57% | 16 | 0 | 20 | 1 | 1 | 7 | 0 | 0.00% |
| 1984 | 345 | 318 | 27 | 7.83% | 14 | 2 | 16 | 2 | 2 | 7 | 2 | 7.41% |
| 1985 | 478 | 429 | 49 | 10.25% | 34 | 0 | 37 | 0 | 5 | 7 | 0 | 0.00% |
| 1986 | 689 | 610 | 79 | 11.47% | 51 | 1 | 56 | 2 | 7 | 14 | 0 | 0.00% |
| 1987 | 885 | 782 | 103 | 11.64% | 60 | 0 | 68 | 0 | 9 | 26 | 0 | 0.00% |
| 1988 | 1,205 | 1,106 | 99 | 8.22% | 49 | 3 | 56 | 3 | 12 | 28 | 2 | 2.02% |
| 1989 | 1,450 | 1,329 | 121 | 8.34% | 66 | 1 | 73 | 2 | 8 | 38 | 0 | 0.00% |
| 1990 | 1,629 | 1,499 | 130 | 7.98% | 73 | 0 | 77 | 1 | 7 | 45 | 0 | 0.00% |
| 1991 | 2,603 | 2,410 | 193 | 7.41% | 104 | 3 | 115 | 3 | 11 | 64 | 0 | 0.00% |
| 1992 | 2,928 | 2,725 | 203 | 6.93% | 106 | 5 | 118 | 5 | 11 | 69 | 1 | 0.49% |
| 1993 | 6,562 | 6,181 | 381 | 5.81% | 192 | 4 | 207 | 5 | 14 | 155 | 0 | 0.00% |
| 1994 | 10,059 | 9,563 | 496 | 4.93% | 221 | 4 | 243 | 4 | 21 | 228 | 0 | 0.00% |
| 1995 | 12,177 | 11,540 | 637 | 5.23% | 314 | 10 | 350 | 10 | 30 | 247 | 1 | 0.16% |
| Total | 41,401 | 38,834 | 2,567 | 6.20% | 1,316 | 33 | 1,453 | 38 | 138 | 938 | 6 | 0.23% |
* Final test type is different from the initial test type.
** The final disposition of the vehicle is unknown.
| Model Year | Total Vehicles | Initial Test | Rec'd Waiver | Waiver Rate | ||
|---|---|---|---|---|---|---|
| Passed | Failed | % Failed | ||||
| 1981 | 167 | 149 | 18 | 10.78% | ||
| 1982 | 262 | 234 | 28 | 10.69% | ||
| 1983 | 259 | 227 | 32 | 12.36% | ||
| 1984 | 688 | 608 | 80 | 11.63% | ||
| 1985 | 915 | 831 | 84 | 9.18% | ||
| 1986 | 1,102 | 998 | 104 | 9.44% | 2 | 1.92% |
| 1987 | 1,296 | 1,166 | 130 | 10.03% | ||
| 1988 | 1,607 | 1,450 | 157 | 9.77% | ||
| 1989 | 1,354 | 1,237 | 117 | 8.64% | ||
| 1990 | 1,135 | 1,037 | 98 | 8.63% | ||
| 1991 | 1,105 | 1,001 | 104 | 9.41% | ||
| 1992 | 1,089 | 1,027 | 62 | 5.69% | ||
| 1993 | 1,222 | 1,163 | 59 | 4.83% | ||
| 1994 | 2,020 | 1,915 | 105 | 5.20% | ||
| 1995 | 3,107 | 2,910 | 197 | 6.34% | 1 | 0.51% |
| 1996 | 1,830 | 1,717 | 113 | 6.17% | 2 | 1.77% |
| 1997 | 2,120 | 2,016 | 104 | 4.91% | ||
| 1998 | 1,598 | 1,532 | 66 | 4.13% | 2 | 3.03% |
| 1999 | 2,618 | 2,534 | 84 | 3.21% | 1 | 1.19% |
| 2000 | 2,940 | 2,849 | 91 | 3.10% | ||
| 2001 | 2,894 | 2,846 | 48 | 1.66% | ||
| 2002 | 2,737 | 2,699 | 38 | 1.39% | ||
| 2003 | 2,759 | 2,728 | 31 | 1.12% | ||
| 2004 | 2,320 | 2,303 | 17 | 0.73% | ||
| Total | 39,144 | 37,177 | 1,967 | 5.03% | 8 | 0.41% |
| Model Year | Light Duty Vehicles | Light Duty Trucks | Heavy Duty Trucks | ||||||
|---|---|---|---|---|---|---|---|---|---|
| # of Failed Vehicles | Avg Emission Reduction | # of Failed Vehicles | Avg Emission Reduction | # of Failed Vehicles | Avg Emission Reduction | ||||
| HC (ppm) | CO (%) | HC (ppm) | CO (%) | HC (ppm) | CO (%) | ||||
| 1981 | 11 | 226 | 2.81 | 4 | 200 | 1.46 | 18 | 349 | 3.58 |
| 1982 | 6 | 779 | 3.89 | 16 | 409 | 3.46 | 28 | 683 | 1.71 |
| 1983 | 12 | 292 | 3.99 | 29 | 347 | 1.83 | 32 | 520 | 1.48 |
| 1984 | 19 | 435 | 2.24 | 27 | 208 | 1.60 | 80 | 647 | 2.41 |
| 1985 | 38 | 184 | 2.14 | 49 | 377 | 2.94 | 84 | 586 | 1.84 |
| 1986 | 49 | 281 | 2.29 | 79 | 597 | 2.25 | 104 | 688 | 1.70 |
| 1987 | 52 | 211 | 2.55 | 103 | 293 | 2.30 | 130 | 562 | 1.95 |
| 1988 | 62 | 272 | 1.53 | 99 | 266 | 2.03 | 157 | 568 | 1.93 |
| 1989 | 74 | 142 | 1.12 | 121 | 415 | 2.38 | 117 | 469 | 1.89 |
| 1990 | 115 | 206 | 1.10 | 130 | 393 | 2.46 | 98 | 531 | 2.19 |
| 1991 | 160 | 242 | 1.44 | 193 | 462 | 2.54 | 104 | 427 | 2.96 |
| 1992 | 267 | 295 | 1.62 | 203 | 403 | 1.80 | 62 | 453 | 2.62 |
| 1993 | 288 | 245 | 1.11 | 381 | 283 | 1.41 | 59 | 343 | 2.52 |
| 1994 | 264 | 178 | 0.93 | 496 | 296 | 1.49 | 105 | 381 | 2.42 |
| 1995 | 405 | 177 | 0.96 | 637 | 325 | 1.20 | 197 | 443 | 1.99 |
| 1996 | 113 | 440 | 1.92 | ||||||
| 1997 | 104 | 599 | 1.87 | ||||||
| 1998 | 66 | 452 | 0.59 | ||||||
| 1999 | 84 | 184 | 0.48 | ||||||
| 2000 | 91 | 663 | 0.97 | ||||||
| 2001 | 48 | 207 | 0.07 | ||||||
| 2002 | 38 | 357 | 0.44 | ||||||
| 2003 | 31 | 90 | 0.30 | ||||||
| 2004 | 17 | 52 | 0.23 | ||||||
| Total | 1,822 | 227 | 1.36 | 2,567 | 347 | 1.76 | 1,967 | 493 | 1.84 |




