Super ultra-low emission vehicle

Super ultra-low emissions vehicle (SULEV) is a U.S. classification for passenger vehicle emissions. The classification is based on producing 90% fewer emissions than the average gasoline-powered vehicle. The SULEV standard is stricter than the standard for LEV (low emission vehicle) and ULEV (ultra-low-emission vehicle), however not as strict as PZEV (partial zero-emissions vehicle) which meets the SULEV standard for tailpipe emissions, but has zero instead of reduced evaporative emissions. Japan also offers an SU-LEV classification, for vehicles that show a 75 percent reduction in emissions vis-à-vis the 2005 emissions standards.

Examples
Examples of vehicles delivering SULEV emissions performance include:
 * Honda Accord 2000-
 * Honda Insight (CVT transmission models only)
 * Honda Civic Hybrid CVT transmission models only, AT-PZEV available in certain states
 * Honda Civic GX Natural Gas
 * Honda CR-Z (AT-PZEV)
 * Toyota Prius
 * Ford Focus SULEV
 * BMW SULEV 230i, i3 REx, 128i, 328i, 325i, 325Ci, and 325iT
 * Subaru PZEV Vehicles beginning with 2008 year models including Forester, Outback, Impreza and Legacy
 * Chevrolet Volt
 * Hyundai Elantra
 * Lexus CT200h
 * Honda Clarity PHEV 2018 – LEV3-SULEV20
 * Kia Forte
 * Volkswagen Jetta
 * Mini Cooper Hardtop 4-Door
 * Toyota RAV4 Hybrid
 * Pontiac Grand Prix, 3800 V6 equipped vehicles beginning with the 2005 model year
 * Toyota Highlander Hybrid
 * Chrysler Pacifica Hybrid
 * Volvo S80 PZEV

Tax incentives
In California, manufacturers of SULEVs can be given a partial credit for producing a zero-emission vehicle (ZEV) and so a vehicle of this type can be administratively designated as a partial zero-emissions vehicle (PZEV). In order to qualify as a PZEV, a vehicle must meet the SULEV standard and, in addition, have zero evaporative emissions from its fuel system plus a 15-year/150000 mi warranty on its emission-control components.

In the case of hybrid vehicles this warranty is extended to the electric propulsion components (electric motor/generator/starter, battery, inverter, controls) and their mechanical interface to the driveline. However, the high-voltage battery warranty is limited to ten years (but still 150,000 miles).

See California AB 1493.