let me talk some buses in HK~~
for KMB:
Leyland Olympian 11M AC:quite noisy,but some of them are
quiet
Dennis Trident 12m:
for using M11-305E and Voith 863.3 gearbox:some of them hv low
pickup(but using ZF bearbox is powerful),not much air-con,and the
main problem is,the engine always shake 1-2 times when
stopping..........
Dennis Dragon 11M:
noisy,since KMB and NWFB has changed some components of the
exhaustion system of them,not enough power.........(especially the
registration number HA-HC series)
Dennis Dragon 12M:
noisy,hv a "who who " sound......not enough power
VSO:extremely noisy.......for the radiation system behind Driver
seat
very very low pickup,but after some of them has tuned,it has quite
gd acceleration
for the steep roads,extremely slow,even running on yr foot is
faster.......
but some of them are powerful,even can hv 40KM/h on some steep
roads
VO(AC):jerking(for using Cummins engine and ZF gearbox)
for using D10A and ZF gearbox:some of them low pickup
VO non-ac 11M:jerking,since it use ZF gearbox........