Ultra-low-emission vehicle


An ultra-low-emission vehicle is a motor vehicle that emits extremely low levels of motor vehicle emissions compared to other vehicles. In some jurisdictions it is defined in law; low and ultra low emission vehicles may be given tax or other advantages, while high emission vehicles may suffer restrictions or additional taxation.

In California

California defines a ULEV as a vehicle that has been verified by the California Air Resources Board , United States to emit 50% less polluting emissions than the average for new cars released in that model year.
Under LEV II regulations, the Tier I and TLEV classifications were removed for 2004. The ULEV is one of a number of designations given by the CARB to signify the level of emissions that car-buyers can expect their new vehicle to produce and forms part of a whole range of designations, listed here in order of decreasing emissions:
;TLEV
;LEV
;ULEV
;SULEV
;PZEV
;AT PZEV
;ZEV