PIAGGIO LIBERTY 125 S 2026 Test Engine performance top speed

Top speed

The real top speed recorded with GPS satellite instrumentation on a flat surface, without a tailwind, is 95 km/h. The speed indicated by the analog onboard speedometer at the corresponding real figure is approximately 103 km/h.

Acceleration

The single-cylinder i-get engine produces a maximum power of 11 hp (8.1 kW) at 8,250 rpm. Sprints from 0 to 50 km/h require 5.2 seconds, a value aligned with the segment average that ensures safe lane changes when launching from urban traffic lights. Progression up to 80 km/h remains linear, while the final stretch toward top speed reveals a flattening of the power curve.

Engine smoothness and on-off effect

A Marelli electronic fuel injection system manages fueling via a single throttle body. Torque delivery (peaking at 10.75 Nm at 6,500 rpm) is linear. No throttle hesitation (on-off effect) is felt when reopening the gas at low speeds, benefiting riding fluidity in tight traffic.

Heat

During long periods idling in traffic jams under high ambient temperatures, the forced-air system maintains a constant operating temperature for the thermal group. No evident drops in mechanical efficiency due to transient overheating (performance fading) were recorded.

Sixth-gear recovery from idle

Technical editorial note: As this vehicle is equipped with a Continuously Variable Transmission (CVT) automatic gearbox, this parameter is evaluated by analyzing uphill recovery capacity from idle speed (approx. 15 km/h). The variator assembly responds with a smooth transition, bringing engine speed into the peak torque zone without any millimetric slipping of the centrifugal clutch.

General performance

The 3-valve i-get engine (two intake, one exhaust) privileges thermodynamic efficiency over absolute performance. Fluidity of motion is its defining trait, backed by a very muted mechanical exhaust note.