Phthalates　are　typical　air　pollutants　in　vehicular　environment　since　numerous　synthetic　materials　that　might　contain　phthalates　are　widely　used　to　fabricate　vehicle　interiors　(e.g.,　seat　cushions,　floor　mats　and　dashboards).　Hitherto,　the　importance　of　phthalate　pollution　in　vehicular　environment　is　not　well-recognized　because　people　spend　only　a　small　portion　(around　8%)　of　their　time　in　vehicles.　In　this　study,　the　mass　fractions　of　six　phthalates　in　nine　materials　commonly　used　in　Chinese　vehicles　(floor　mats　and　seat　cushions)　were　measured.　Two　phthalates,　di-n-butyl　phthalate　(DnBP)　and　di-2-ethylhexyl　phthalate　(DEHP),　were　identified　in　most　materials　(the　other　phthalates　were　not　detected).　The　emission　characteristics　of　DnBP　and　DEHP　from　these　materials　were　further　investigated.　The　measured　emission　parameters　were　used　as　input　for　a　mass-transfer　model　to　estimate　DnBP　and　DEHP　concentrations　in　cabin　air.　Finally,　the　ratios　between　human　exposures　(via　inhalation　and　dermal　absorption　from　the　gas　phase)　in　vehicular　environment　and　the　total　exposures　in　typical　indoor　environments　(e.g.,　residences　and　offices)　were　estimated　to　be　up　to　110%　and　20%　for　DnBP　and　DEHP,　respectively.　Based　on　these　results,　the　vehicular　environment　might　be　a　considerable　site　for　human　exposure　to　airborne　phthalates.