OT: Native english speakers, got some questions. I'm constantly trying to improve my english online, so ..

3:42 "The emissions is extremely low" -> Is low? Are low? Why is?

3:46 "Diesel emissions fuel" -> Is that the canonical way of spelling 'Diesel'? I mean, that's more or less exactly the way I'd spell it, but .. I'm surprised. Usually english doesn't quite like 'i' as in 'ee'. I know that this is a German name after all, but .. I have a number of peers and friends that wouldn't be able to map 'Morpheus' (Matrix), 'Zeus', 'Euler' etc. to the German pronounciation, i.e. you'd get a 'Err.. WHAT?'. Diesel made it 1:1? Or is that debatable and there are people that pronounce it differently?