Scooter · 1998
ET 4
MotoLibrary Score
34 /100 Commuter
Power/Weight
0.09 hp/kg
Engine
124 ccm
Technical Overview
1998 Vespa ET 4 Technical Analysis & Specification Breakdown
Engineered by Vespa for the scooter motorcycle segment, the 1998 Vespa ET 4 relies on a 124 cc (7.6 cu in) air-cooled single cylinder, two-stroke powerplant. In factory specification, peak output is rated at 9 HP (6.6 kW). With a specific output of 72.6 HP per liter, the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.
On the scales, the ET 4 measures 104 kg (229 lbs) dry, translating to a power-to-weight ratio of 0.09 HP/kg (11.56 kg per horsepower).
Specific Output
72.6 HP/L
Power-to-Weight
0.09 HP/kg (11.56 kg/HP)
Engine
Displacement 124.0 ccm (7.57 cubic inches)
Engine Type Single cylinder, two-stroke
Engine Details Single cylinder, two-stroke
Power 9.0 HP (6.6 kW))
Cooling Air
Dimensions & Weight
Dry Weight 104.0 kg (229.3 pounds)
Power/Weight 0.0865 HP/kg
More from Vespa
Rider Profile
Who Is This Bike For?
🟢
Beginner
A2 license compatible, manageable power.
🏙️
Best For
City & Commuting
⚖️
Handling
Very lightweight — easy to handle
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