At the heart of the 2023 Keeway Vieste 300 scooter motorcycle, Keeway features a 278.2 cc (17 cu in) liquid-cooled single cylinder, four-stroke configuration. In factory specification, peak output is rated at 18.8 HP (13.7 kW) at 6,500 rpm while maximum torque reaches 22.5 Nm (16.6 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 67.6 HP per liter and a 500 rpm working window between peak torque (6,000 rpm) and peak power (6,500 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 Vieste 300 measures 147 kg (324 lbs) dry, translating to a power-to-weight ratio of 0.13 HP/kg (7.82 kg per horsepower). Rider ergonomics and chassis geometry center around a 770 mm (30.3 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,385 mm (54.5 in) wheelbase engineered for quick, flickable steering geometry. The 9.5-liter (2.5 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Keeway archive, this model family spans 2 indexed model years from 2023 to 2024, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
67.6 HP/L
Power-to-Weight
0.13 HP/kg (7.82 kg/HP)
Power Band Window
6,000–6,500 rpm
Standover Height
770 mm (30.3 in)
Engine
Displacement278.2 ccm (16.98 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsPiaggio engine
Power18.8 HP (13.7 kW)) @ 6500 RPM
Torque22.5 Nm (2.3 kgf-m or 16.6 ft.lbs) @ 6000 RPM
Compression11.0:1
Bore x Stroke75.0 x 63.0 mm (3.0 x 2.5 inches)
Valves/Cylinder2
Fuel SystemInjection
Fuel ControlSingle Overhead Cams (SOHC)
IgnitionTLI
LubricationPressure splash
CoolingLiquid
Transmission
GearboxAutomatic
Final DriveBelt (final drive)
DrivelineAutomatic CVT
Chassis
Frame TypeRocker type
Front SuspensionKYB upside-down telescopic forks
Front Travel90 mm (3.5 inches)
Rear SuspensionKYB dual shock-absorber
Rear Travel65 mm (2.6 inches)
Wheelbase1385 mm (54.5 inches)
Ground Clearance160 mm (6.3 inches)
Wheels & Brakes
Front Tyre110/70-13
Rear Tyre130/70-13
Front BrakesSingle disc. ABS
Front Brake Ø240 mm (9.4 inches)
Rear BrakesSingle disc. ABS
Rear Brake Ø220 mm (8.7 inches)
WheelsAlloy rims
Dimensions & Weight
Dry Weight147.0 kg (324.1 pounds)
Power/Weight0.1277 HP/kg
Seat Height770 mm (30.3 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.
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.
