| Yamaha's profilation of this bike | 
  | t just 78kg, the lightweight and classically styled Why brings effortless class to the high wheel scooter experience. Its simple, clean curves make it an aesthetic beauty, and its air-cooled 50cc engine offers all the performance you’ll need to ride one or two-up. | 
    
        | General moped information | 
  
    | Model name | Yamaha Why | 
    | Year model | 2010 | 
    | Type | Scooter | 
    | Rating | 3.5   View the detailed rating of value for money, design and look, reliability, etc. Compare with any other bike. | 
    
        | Engine and transmission | 
  
    | Engine size | 49.2 ccm (3.00 cubic inches) | 
    | Type of engine | Single cylinder, two-stroke | 
    | Effect | 3.2 HP (2.4  kW)) @ 6500 RPM | 
    | Torque | 3.5 Nm (0.4 kgf-m or 2.6 ft.lbs) @ 6250 RPM | 
    | Compression | 7.3:1 | 
    | Bore x stroke | 40.0 x 39.2 mm (1.6 x 1.5 inches) | 
    | Ignition | CDI | 
    | Lubrication system | Separate lubrication | 
    | Cooling system | Air | 
    | Gearbox | Automatic | 
    | Transmission type | Belt  (final drive) | 
    
        | Chassis, suspension, brakes and wheels | 
  
    | Front suspension | Telescopic fork | 
    | Front wheel travel | 80 mm (3.1 inches) | 
    | Rear suspension | Unit swing | 
    | Rear wheel travel | 70 mm (2.8 inches) | 
    | Front tire | 70/90-16 | 
    | Rear tire | 80/90-16 | 
    | Front brakes | Single disc | 
    | Diameter | 220 mm (8.7 inches) | 
    | Rear brakes | Expanding brake (drum brake) | 
    | Diameter | 110 mm (4.3 inches) | 
    
        | Physical measures and capacities | 
  
    | Weight incl. oil, gas, etc | 78.0 kg (172.0 pounds) | 
    | Seat height | 765 mm (30.1 inches) If adjustable, lowest setting. | 
    | Overall height | 1105 mm (43.5 inches) | 
    | Overall length | 1940 mm (76.4 inches) | 
    | Overall width | 685 mm (27.0 inches) | 
    | Ground clearance | 125 mm (4.9 inches) | 
    | Wheelbase | 1294 mm (50.9 inches) | 
    | Fuel capacity | 7.00 litres (1.85 US gallons) | 
    
        | Other specifications | 
  
    | Color options | Silver, aubergine black | 
    | Starter | Electric & kick | 
| Update specs | Report missing specs or required updates. | 
    
        | Further information | 
  | Insurance costs | Compare US insurance quotes from the nation's top providers. | 
| Maintenance | Find parts, fluids. filters, maintenance tools and service manuals at Amazon.com. | 
| Ask questions | Join the 10 Yamaha Why discussion group or the general Yamaha discussion group. | 
| Related bikes | List related bikes for comparison of specs. | 
    
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