Viano Petrol Bus 3.5 3498cc 190KW 258HP M 272.978. Viano Diesel Bus CDI 2.0 4-matic 2148cc 80KW 109HP OM 646.982. Viano Diesel Bus CDI 2.2 4-matic (639.711, 639.713, 639.811, 639.813. 2148cc 110KW 150HP OM 646.982. ).