| Attribute | Value |
| General |
| Production from | 2009 year |
| Make | Yamaha |
| Model | Yamaha Why |
| Category | Scooter |
| Engine and transmission |
| Engine type | Single cylinder, two-stroke |
| Valves per cylinder | Add |
| Fuel system | Carburettor |
| Engine details | Add |
| Displacement | 49.2 cm³ |
| Power | 2.3 kw |
| Max RPM | Add |
| Fuel consumption | Add |
| Cooling system | Air |
| Transmission type,final drive | Belt |
| Torque | 3.5 Nm |
| Bore | 40 mm |
| Stroke | 39.2 mm |
| Gearbox | Automatic |
| Greenhouse gases | Add |
| Fuel control | Add |
| Emission details | Add |
| Driveline | Add |
| Ignition | CDI |
| Clutch | Add |
| Lubrication system | Separate lubrication |
| Compression | 7.3:1 |
| Exhaust system | Add |
| Chassis |
| Front suspension | Telescopic fork |
| Rear suspension | Unit swing |
| Front brakes | Single disc |
| Rear brakes | Expanding brake (drum brake) |
| Diameter | 110 mm |
| Frame type | Add |
| Front tyre | 70/90-16 |
| Rear tyre | 80/90-16 |
| Seat | Add |
| Wheels | Add |
| Front wheel travel | 80 mm |
| Rear wheel travel | 70 mm |
| Trail | Add |
| Rake (fork angle) | Add |
| Other |
| Battery capacity | Add |
| Starter | Electric & kick |
| Color options | Add |
| Carrying capacity | Add |
| Light | Add |
| Instruments | Add |
| Electrical Voltage | Add |
| Dimensions |
| Wheelbase | 1,294 mm |
| Kerb weight | 78 kg |
| Dry weight | Add |
| Power/weight ratio | Add |
| Overall height | 1,105 mm |
| Overall length | 1,940 mm |
| Overall width | 685 mm |
| Seat height | 765 mm |
| Alternate seat height | Add |
| Ground clearance | 125 mm |
| Front percentage of weight | Add |
| Rear percentage of weight | Add |
| Performance |
| Top speed | Add |
| Acceleration 0-100 km/h | Add |
| Length | Add |
| Reserve fuel capacity | Add |
| Fuel capacity | 7 l |
| Oil capacity | Add |
| Width | Add |
| Height | Add |