Originally Posted by cYbton
Ok guys thank you all for your information. We won't buy a bus with this engine. Now we're looking for older school buses. Thanks for your help!
FWIW there was another person on the forum here who is planning to build a skoolie in Germany. Apparently, buses 25 years or older are exempted from diesel emissions regulations, so you would need to get a 1994 bus or older to benefit from this. Beyond that I have no idea what the emissions standards are for Germany right now, but it is generally the case that the newer the (US) bus (starting in 2004) the lower its emissions will be - but also the more it will cost to fix problems (and the more problems you will have due to the emissions control systems).