Both use Yamaha’s 124.9 cc Blue Core engine with CVT and Stop & Start - so choosing between Janus and FreeGo is not about the engine. It is about what sits around it. All figures from Yamaha Vietnam’s product pages (retrieved 23 September 2026).
The numbers side by side
| Janus 125 | FreeGo 125 | |
|---|---|---|
| Max power | 7.0 kW @ 8,000 rpm | 7.0 kW @ 8,000 rpm |
| Max torque | 9.6 Nm @ 5,500 rpm | 9.0 Nm @ 5,500 rpm |
| Kerb weight | 97 kg | 100 kg (wet) |
| Seat height | 770 mm | 780 mm |
| Claimed economy | 1.98 L/100 km | 2.03 L/100 km |
| Fuel tank | 4.2 L | 3.9 L |
| Underseat storage | 15.3 L | 25 L |
| Tyres | 80/80-14, 100/70-14 | 100/90-12, 110/90-12 |
| Equipment | USB port, front disc | SmartKey, LED headlight, USB, front disc; ABS version (FreeGo S) |
| Listed retail price | from 29,151,000 VND | from 30,340,000 VND |
What the numbers mean
- Storage: the FreeGo’s 25-litre bay takes a full-face helmet; the Janus’s 15.3-litre bay takes a half-helmet and not much more.
- Equipment: the FreeGo adds smart key and an LED front light; the Janus keeps it simple and light.
- Wheels: the Janus’s 14-inch wheels vs the FreeGo’s 12-inch set - our tyre sizes explainer covers the ride trade-offs.
- Weight and economy: near-identical; the Janus is marginally lighter and marginally thriftier on paper.
- Brakes: both use a front disc with rear drum; the FreeGo S offers ABS.
Which should you choose?
Janus for the lowest price and weight - the pure city tool. FreeGo for storage, features and the ABS option. Neither is among Nguyen Tu’s price-published rental models - contact us to confirm current availability, and see our Honda vs Yamaha comparison for the rival models.