ENVIRONMENTAL PERFORMANCE
Did You Know?
The cost of operating an electric vehicle is 3 cents/mile- less than half of the 8 cents/mile cost for conventional vehicles
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SMOG DEFINITIONS:
SMOG
Smog is a haze-like form of air pollution produced by the photochemical reaction of sunlight with volatile organic compounds (including non-methane organic gases) and oxides of nitrogen that have been released into the atmosphere, especially by automobile operation.
SMOG SCORE
Beginning in 2009 in California, all new vehicles are required to display a smog score. The smog score ranks each vehicle’s pollutant levels of non-methane organic gases (NMOG) and oxides of nitrogen (NOx) relative to all other vehicles within the current model year.
Smog scores will be on a scale of 1 – 10, with 10 being the cleanest. The average vehicle available in California today will get a smog score of 5. The table below shows the pollutant levels associated with each smog score, and how those levels relate to Federal and California certification standards. Many pre 2004 vehicles fall below a smog score of 1. This is because, over time, there have been significant advances in air pollution control technologies and the Air Resources Board has established more stringent pollution standards for vehicles.
A vehicle’s certification level can be found under the hood on the Vehicle Emissions Control Information label.
Pollutant levels allowed for each smog score:
| Emission Certification |
Smog Score |
NMOG + Nox
(g/mile)** |
| ZEV |
10 |
0.000 |
| Bin 1 |
10 |
0.000 |
| ATPZEV |
9* |
0.030 |
| PZEV |
9* |
0.030 |
| L2SULEV |
8 |
0.030 |
| L1SULEV |
8 |
0.030 |
| Bin 2 |
8 |
0.030 |
| Bin 3 |
7 |
0.085 |
| Bin 4 |
6 |
0.110 |
| L2ULEV |
5 |
0.125 |
| Bin 5 |
4 |
0.160 |
| L2LEV |
4 |
0.160 |
| Bin 6 |
3 |
0.190 |
| L2LEV (opt. 1) |
3 |
0.190 |
| L2SULEV (MDV) |
2 |
0.200 |
| Bin 7 |
2 |
0.240 |
| Bin 8a |
1 |
0.325 |
| L2ULEV (MDV) |
1 |
0.343 |
| L1ULEV |
1 |
0.355 |
| Bin 8b |
1 |
0.356 |
| L1SULEV (MDV2) |
< 1 |
0.372 |
| Bin 9a |
< 1 |
0.390 |
| L1LEV |
< 1 |
0.390 |
| L2LEV (MDV) |
< 1 |
0.395 |
| Bin 9b |
< 1 |
0.430 |
| Bin 9c |
< 1 |
0.480 |
| L1SULEV (MDV3) |
< 1 |
0.534 |
| L1ULEV (LDT2) |
< 1 |
0.570 |
| L1LEV (LDT2) |
< 1 |
0.630 |
| L1ULEV (MDV2) |
< 1 |
0.743 |
| Bin 10a |
< 1 |
0.756 |
| L1LEV (MDV2) |
< 1 |
0.830 |
| Bin 10b |
< 1 |
0.830 |
| Bin 10c |
< 1 |
0.880 |
| L1ULEV (MDV3) |
< 1 |
1.067 |
| L1LEV (MDV3) |
< 1 |
1.180 |
| Bin 11 |
< 1 |
1.180 |
*A Smog Score of 9 was given to vehicles certifying to the California PZEV and ATPZEV standards based on the longer useful life, zero evaporative emissions requirements, and extended warranty for these vehicles compared to vehicles certifying to the SULEV standards.
**Does not include upstream emissions.
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