Related by context. Frequent words. (Click for all words.) 67 Economy CAFE 62 CAFE standards 57 Average Fuel 53 fleetwide average 48 EPAct 48 Fuel Efficiency 48 tailpipe standards 47 pickups SUVs 47 Renewable Fuels Standard 45 SUVs minivans 45 SUVs pickups 44 Waxman Markey bill 44 ZEV 44 greenhouse gases GHGs 44 FAA reauthorization 44 Waxman Markey climate 44 Fuel Economy 44 Waxman Markey 43 Renewable Fuel 43 tailpipe emissions 43 exhaust emission 43 surtaxes 42 GS #h 42 Honda Accord Hybrid 42 Gas Mileage 42 CAFE 42 gas guzzling SUVs 42 pickups vans 42 underinflated tires 42 McCarran Ferguson Act 42 smog forming nitrogen oxides 41 House 41 RFS2 41 AFS Trinity 41 6 CYL 41 #g/km CO2 [001] 41 #V MPFI DOHC 41 SUVs 41 FATCA 40 CO ² emissions 40 evaporative emissions 40 Surface Transportation 40 Debt Limit 40 wealthiest estates 40 SUVS 40 mandates 40 Kyoto Protocols 40 Greenhouse Gas Emissions 40 CO2 Emissions 40 tarmac strandings 40 Secure Fence Act 40 GHGs 40 Withholding Tax 40 mileage 39 User Fee 39 VEHICLES 39 GHG emission 39 #.#L V8 #V MPFI 39 GHG emissions 39 Subaru B9 Tribeca 39 exhaust emissions 39 sunset clauses 39 Segment EBIT 39 #.#L V8 #V 39 Aviation Turbine Fuel 39 Mandates 39 Domestic 39 airworthiness directive AD 39 Lexus RX#h 38 GHG reductions 38 VEETC 38 NGVs 38 g km 38 automobiles 38 MPGe 38 nondefense discretionary spending 38 pollutants emitted 38 Emissions 38 nitrogen oxides NOx 38 automobile 38 #.#L V6 #V MPFI 38 EOBRs 38 #.#L I4 #V MPFI 38 emission norms 38 Carbon Emissions 38 Federal Excise Tax 38 curbing greenhouse gases 38 Mariner Hybrid 38 Fuel Consumption 38 mpg 38 Nitrogen oxides 37 Co2 emissions 37 supermajority requirement 37 PAYGO 37 Acquisition Regulations 37 efficient powertrains 37 Tort Reform 37 milage 37 corn ethanol 37 Escape hybrid 37 alternative fuels