Eco-driving　has　been　proven　to　have　a　great　potential　in　reducing　vehicle　fuel　consumption　and　greenhouse　gas　emissions　in　many　developed　countries,　however,　this　potential　in　China　might　be　different　due　to　different　vehicle　technologies,　driving　groups　and　driving　habits.　In　China,　eco-driving　was　just　introduced　in　recent　years　and　the　potential　in　energy　saving　and　emissions　reduction　of　this　fuel-efficient　driving　concept　is　not　clear.　Based　on　a　driving　simulator,　the　amount　of　fuel　consumption　and　emissions　before　and　after　eco-driving　training　of　22　recruited　drivers　was　calculated　and　compared.　The　training　has　two　different　levels,　from　receiving　only　static　information　(education)　to　guided　practicing　of　eco-driving　rules　(coaching).　Results　show　that　the　potential　of　eco-driving　in　saving　fuel　consumption　is　3.43%-5.45%,　and　the　potential　of　eco-driving　on　emissions　reduction　is　3.39%-26.15%,　corresponding　to　different　emission　indexes.　The　benefits　of　eco-driving　will　be　enlarged　as　the　level　of　training　reinforced.　Additionally,　the　potential　of　fuel　consumption　saving　and　emissions　reduction　after　eco-driving　training　is　different　between　professional　and　non-professional　drivers.　©,　2015,　Beijing　University　of　Technology.　All　right　reserved.