http://www.theicct.org/sites/default/files/publications/Euro-VI-versus-6_ICCT_briefing_06012017.pdf
出處：
http://www.theicct.org/nox-europe-hdv-ldv-comparison-jan2017
最令人注意的是這段話：
The ICCT has acquired data on real-world emissions for a total of 24 Euro VI vehicles (buses, tractor-trailers, and rigid trucks) from two sources: VTT labs in Finland, which provided chassis-dynamometer testing data, and the German type-approval authority (KBA), which provided PEMS in-service conformity testing data. For illustrative purposes the VTT data is summarized in Table 2.
The average NOX emissions of the testing data from the 24 heavy-duty vehicles mentioned above was 210 mg/km, less than half the average NOX emissions from Euro 6 cars (480–560 mg/km) found by both independent measurements and Member State testing. In addition, the average conformity factor7 was less than 1, meaning that on-road emissions stayed below the Euro VI engine type-approval test limits.
ICCT從芬蘭跟德國的兩個單位，取得了24台重型柴油車的排放資料。
這些重型柴油車包括巴士、貨櫃車與大卡車。
結果發現這24台重型柴油車的平均NOx尾氣排放量，略高於210mg/km。
大概是歐洲六期標準的柴油小客車排放量(480mg/km - 450 mg/km)的一半以下
這個結果，相信顛覆了很多人認為重型柴油車尾氣NOx排放，絕對比柴油小客車要多的觀念。
不過Bus部份只有低速的資料，這一點是需要注意的。
但大貨車/大卡車與貨櫃車的NOx排量，明顯優於大多數歐洲六期排放標準的柴油小客車(請對照下圖)，這一點是確定的。
歐洲6期柴油小客車，實際上路所測試出的NOx排量
PS:請注意上圖中，測試都是以歐洲的柴油版作測試。
長條圖所列出的車中，有些車款台灣並未販售，或是無販售柴油版本。
因此僅供參考。
