washington u.s. president donald trump set formally announce review vehicle fuel efficiency rule lock end obama administration meet automaker chiefs week accord two source brief matter move trump would victory automakers months push new administration reconsider rule say would expensive could cost job step vehicles consumers want buy trump visit autonomous vehicle test facility detroit suburb wednesday meet chief executives several u.s. automakers administration decide review feasibility vehicle emissions rule apply years 2022 2025 source tell reuters last week former president barack obama move keep final days administration reuters report plan announcement march 3. formal notice u.s. regulators restart review expect make public wednesday white house spokesman sean spic say monday trip focus job creation automobile manufacture ... highlight need eliminate burdensome regulations needlessly hind meaningful job growth chief executives general motor co gm.n ford motor co f.n fiat chrysler automobile nv fcha.mi fcau.n meet president ypsilanti township michigan along senior officials japanese german automakers include toyota motor corp 7203.t nissan motor co 7201.t daimler ag daign.de trump hold roundtable ceos make speech autoworkers others u.s. environmental protection agency april 2018 decide whether standards feasible midterm review move decision week obama leave office january automakers argue vehicle emissions rule would raise fleet average fuel efficiency 50 miles per gallon mpg 2025 27.5 mpg 2010 impose significant cost step consumer preferences argue need flexibility meet rule amid low gas price environmentalists favor standards say rule reduce fuel cost greenhouse gas vow sue trump administration weaken trade group represent automakers include general motor volkswagen ag vowg_p.de toyota ask epa withdraw determination finalize rule stem 2011 deal industry reach u.s. government change 2022-2025 fuel rule require lengthy regulatory process environmentalists democratic state attorneys general likely sue trump administration significantly weaken requirements obama administration say 2011 change would boost fuel efficiency fleet-wide average 54.5 mpg save motorists 1.7 trillion total fuel cost life vehicles cost auto industry 200 billion 13 years fuel standards central part obama legacy address climate change july epa estimate fleet would average 50.8 mpg 52.6 mpg 2025 rule americans buy sport utility vehicles truck few cars automakers brief meet expect epa take action week attempt prevent california set vehicle emissions rule trump administration official confirm intend address california authority week reuters report last week epa consider take step reverse california waiver clean air act allow set vehicle greenhouse gas emissions standards trump repeatedly meet automaker ceos since take office make boost employment especially auto sector top priority trump announce review vehicle emissions rule source