Related by context. Frequent words. (Click for all words.) 68 ZEV 61 zero emission 59 FCVs 58 EVs 58 FFVs 58 HEVs 58 hybrid powertrains 57 BlueTec 55 Selective Catalytic Reduction SCR 55 PZEV 55 tailpipe emissions 55 exhaust emission 54 particulate filters 54 #mpg [001] 54 tailpipe standards 53 pickups SUVs 53 LCVs 53 ForTwo 53 NGVs 53 Bluetec 53 PHEV 52 e tron 52 Hybrid Vehicle 52 hybrids 52 PEVs 52 BLUETEC 52 Mitsubishi i MiEV 52 PHEVs 52 Altima Hybrid 51 fleetwide average 51 hybrid electric 51 ZENN 51 microcar 51 electric drivetrain 51 diesel particulate filters 50 Escape hybrid 50 EcoBoost engines 50 Phoenix Motorcars 50 FlexFuel 50 Smart ForTwo 50 diesel powered 50 CODA Automotive 50 Hybrid Vehicles 50 minivehicles 50 hybrid 50 Hybrid Synergy Drive 50 diesels 50 Prius Plug 50 EfficientDynamics 50 electric Nissan Leaf 50 LS #h L 50 Transit Connect Electric 49 Panamera S 49 CAFE standards 49 hybrid drivetrain 49 V2G 49 CUVs 49 Lithium Ion batteries 49 Lexus RX #h 49 Smart Fortwo 49 Chevrolet Volts 49 4MATIC 49 Hydrogen Fuel Cell 49 Civic Hybrid 49 hybrid powertrain 49 diesel particulate filter 49 CARB 49 greenhouse gases GHG 49 Camry Hybrid 49 Civic GX 49 Toyota iQ 49 Honda FCX 48 vehicles 48 Saturn Vue Green 48 flex fuel 48 HEV 48 BlueMotion 48 SUVs pickups 48 V6 engines 48 EV 48 Flex Fuel 48 mpg 48 NiMH batteries 48 Xebra 48 immobilizers 48 Nissan LEAF 48 Highlander SUV 48 RX#h 48 FCX Clarity 48 powertrains 48 Renault Nissan Alliance 48 emission 48 Hatchback 48 electric powertrain 48 Bharat Stage 47 Accord Hybrid 47 electric powertrains 47 Hybrids 47 smart fortwo electric 47 electric hybrids 47 Board CARB