At the heart of the 2018 Piaggio Medley 150 scooter motorcycle, Piaggio relies on a 155 cc (9.5 cu in) liquid-cooled single cylinder, four-stroke powerplant. In factory specification, peak output is rated at 14.8 HP (10.8 kW) at 7,750 rpm while maximum torque reaches 14.4 Nm (10.6 lb-ft) at 6,400 rpm, transferring power to the rear wheel through a automatic gearbox and belt final drive. With a specific output of 95.5 HP per liter and a 1,350 rpm working window between peak torque (6,400 rpm) and peak power (7,750 rpm), the engine character is reflecting a performance-oriented street tune that balances strong mid-range pull with an energetic top-end rush.
On the scales, the Medley 150 measures 132 kg (291 lbs) wet (curb), translating to a power-to-weight ratio of 0.11 HP/kg (8.92 kg per horsepower). Rider ergonomics and chassis geometry center around a 799 mm (31.5 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,390 mm (54.7 in) wheelbase engineered for quick, flickable steering geometry. The 7-liter (1.8 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Piaggio archive, this model family spans 3 indexed model years from 2017 to 2023, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
95.5 HP/L
Power-to-Weight
0.11 HP/kg (8.92 kg/HP)
Power Band Window
6,400–7,750 rpm
Standover Height
799 mm (31.5 in)
Engine
Displacement155.0 ccm (9.46 cubic inches)
Engine TypeSingle cylinder, four-stroke
Power14.8 HP (10.8 kW)) @ 7750 RPM
Torque14.4 Nm (1.5 kgf-m or 10.6 ft.lbs) @ 6400 RPM
Bore x Stroke58.0 x 58.7 mm (2.3 x 2.3 inches)
Valves/Cylinder4
Fuel SystemInjection. EFI
Fuel ControlSingle Overhead Cams (SOHC)
LubricationWet sump
CoolingLiquid
Transmission
GearboxAutomatic
Final DriveBelt (final drive)
DrivelineC.V.T
Performance
Emission DetailsEuro 4
Chassis
Frame TypeSingle cradle
Front SuspensionTelescopic fork
Rear SuspensionDual shocks
Wheelbase1390 mm (54.7 inches)
Wheels & Brakes
Front Tyre110/80-16
Rear Tyre110/80-14
Front BrakesSingle disc. ABS
Front Brake Ø260 mm (10.2 inches)
Rear BrakesSingle disc. ABS
Rear Brake Ø240 mm (9.4 inches)
Dimensions & Weight
Weight incl.132.0 kg (291.0 pounds)
Seat Height799 mm (31.5 inches) If adjustable, lowest setting.
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.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
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.
