Vietnam’s underbone market is a two-brand contest, and both brands publish complete specifications (retrieved 23 September 2026). This guide compares the verified pairs class by class - no forum folklore, only manufacturer data.

The 110 class: Wave Alpha and Wave RSX vs Sirius RC

Spec Wave Alpha Wave RSX Sirius RC 110
Power 6.12 kW 6.46 kW 5.9 kW
Torque 8.44 Nm 8.70 Nm 9.0 Nm
Claimed economy 1.72 L/100 km 1.56 L/100 km 2.08 L/100 km
Tank 3.7 L 4.0 L 4.2 L
Weight 96 kg 98 kg 100 kg wet
List price 18,841,091 VND 25,664,727 VND 21,993,000 VND

Reading it honestly: Honda wins the economy numbers, and the Sirius counters with the biggest tank and the highest torque figure of the three. The Sirius also offers a disc-brake RC version. Honda publishes fuel system details for the RSX (PGM-FI); neither page states a fuel system for the Wave Alpha or Sirius - so no injection or carburettor claims are made for them here.

The 155 class: Winner R and CBR150R vs Exciter 155 VVA

Spec Winner R CBR150R Exciter 155 VVA
Power 11.5 kW 12.6 kW 13.2 kW
Torque 13.5 Nm 14.4 Nm 14.4 Nm
Gears manual clutch manual clutch 6-speed, Assist and Slipper
Claimed economy 2.59 L/100 km 2.91 L/100 km 2.07 L/100 km
Weight 124 kg 139 kg 123 kg wet
List price 46,360,000 VND 72,290,000 VND 55,200,000 VND

The Exciter takes the performance-and-economy double: the most power and the best claimed figure of the three. The CBR150R counters with the 12-litre touring tank and full fairing; the Winner R is the value entry into the class.

The unique models

Honda’s Super Cub C125 and CT125 have no direct Yamaha rival in the verified data. Yamaha has no heritage or trail underbone on its current Vietnam pages.

Renting

Our price-published rental classes are the Honda Wave and the Yamaha Sirius, both 150,000 VND per day - contact us to confirm current availability of exact versions. Insurance is not included in rentals.