The initial 1998/1999 batch (3ASV1-61) utilized a ZF 4HP590 gearbox, while later units transitioned to the 5-speed ZF 5HP590 .
Despite power increases over its predecessor, it is noted for struggling on steep inclines and having limited steering ability, requiring mechanical adjustments for hilly routes in Hong Kong. Interior and Design
To accommodate the low-floor design, the staircase was moved backward compared to older Olympian models, preventing seats from being installed directly in front of it.
Most early units featured narrow 2+2 seating on the upper deck to maximize capacity.
Standard 12-meter models like the 3ASV can carry approximately 125 passengers (around 83 seated and 42 standing).