S 125

2011 Vespa S 125 Technical Analysis & Specification Breakdown

Engineered by Vespa for the scooter motorcycle segment, the 2011 Vespa S 125 relies on a 125 cc (7.6 cu in) air-cooled single cylinder, four-stroke powerplant. In factory specification, peak output is rated at 10.3 HP (7.5 kW) at 8,250 rpm while maximum torque reaches 9.6 Nm (7.1 lb-ft) at 7,250 rpm, transferring power to the rear wheel through a automatic gearbox and belt final drive. With a specific output of 82.4 HP per liter and a 1,000 rpm working window between peak torque (7,250 rpm) and peak power (8,250 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 S 125 measures 114 kg (251 lbs) wet (curb), translating to a power-to-weight ratio of 0.09 HP/kg (11.07 kg per horsepower). Rider ergonomics and chassis geometry center around a 785 mm (30.9 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance. The 8.6-liter (2.3 US gal) fuel tank paired with a rated consumption of 2.6 L/100 km provides an estimated theoretical range of roughly 331 km (206 miles) between fill-ups.

Within MotoLibrary's Vespa archive, this model family spans 4 indexed model years from 2008 to 2011, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.