No they had no diesel as option. The only engine options were the normal 2l Duratec and a PZEV (Partial zero emission vehicle) 2l Duratec engine. The PZEV has like 10 less hp and a different manifold and some other things
I have literally released a hotfix for that one month ago. Please update your mod. ONLY IF YOU USE BEAMNG VERSION 0.23 HOWEVER! It might not work in previous versions. Please keep in mind that this mod‘s compatibility is only checked with the most up to date version, as it also takes advantage of a lot of the current versions‘s features.
I think rather Europe favors diesels for no reason, adding it to cars that gasoline would make more sense in lol
only reason why i think diesels are still around is: Lots of low end torque, so low rpm means less fuel consumption, meaning more fuel economy i guess