At the heart of the 2006 Vespa PX 150 scooter motorcycle, Vespa features a 151 cc (9.2 cu in) air-cooled single cylinder, two-stroke configuration. In factory specification, peak output is rated at 11 HP (8 kW) at 6,600 rpm while maximum torque reaches 9.6 Nm (7.1 lb-ft) at 6,000 rpm, transferring power to the rear wheel through a automatic gearbox and belt final drive. With a specific output of 72.8 HP per liter and a 600 rpm working window between peak torque (6,000 rpm) and peak power (6,600 rpm), the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.
On the scales, the PX 150 measures 116 kg (256 lbs) wet (curb), translating to a power-to-weight ratio of 0.09 HP/kg (10.55 kg per horsepower). Rider ergonomics and chassis geometry center around a 1,260 mm (49.6 in) wheelbase engineered for quick, flickable steering geometry. The 8-liter (2.1 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Vespa archive, this model family spans 6 indexed model years from 2005 to 2017, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
72.8 HP/L
Power-to-Weight
0.09 HP/kg (10.55 kg/HP)
Power Band Window
6,000–6,600 rpm
Engine
Displacement151.0 ccm (9.21 cubic inches)
Engine TypeSingle cylinder, two-stroke
Engine DetailsSingle cylinder, two-stroke
Power11.0 HP (8.0 kW)) @ 6600 RPM
Torque9.6 Nm (1.0 kgf-m or 7.1 ft.lbs) @ 6000 RPM
Bore x Stroke57.0 x 58.0 mm (2.2 x 2.3 inches)
LubricationAutomatic oil-fuel mixer
CoolingAir
Transmission
GearboxAutomatic
Final DriveBelt (final drive)
ClutchOil wet clutch
Chassis
Front SuspensionOscillating arm, coil spring and dual effect hydraulic shock absorber
Rear SuspensionHydraulic shock absorber, 88 mm stroke
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
Torque
Torque is useful for judging real-world pull, especially for touring, commuting and loaded riding.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
