In addition to the different lengths, the buses were sold with a variety of prime movers, including conventional diesel and CNG combustion engines and hybrid diesel-electric power.

[10] Like the preceding Crown-Ikarus 286 and Orion-Ikarus 286 articulated buses sold in the 1980s, rolling shells were assembled by the Ikarus Bus company in Hungary and finished in the United States to meet "Buy American" requirements for federally-subsidized transit vehicles.

[15] A 'Gen II' restyle was unveiled in 2008, which added small quarter windows at the front between the windshield and the door or driver's side window, making the appearance similar to the contemporary NABI LFW Gen II (also unveiled in 2008) and the NABI BRT line (debuted in 2004).

[10] Ikarus USA built a prototype Model 416 bus powered by liquefied natural gas (LNG) in 1991, claimed to be the first in America.

The prototype was built at the request of Harris County Metro and was completed three days before another bus was retrofitted with an LNG Detroit Diesel engine by Stewart & Stevenson.