Engineered by Peugeot for the scooter motorcycle segment, the 2008 Peugeot Sum-up 125 pairs a 124.6 cc (7.6 cu in) air-cooled single cylinder, two-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 7.3 HP (5.3 kW), transferring power to the rear wheel through a automatic gearbox and chain final drive. With a specific output of 58.6 HP per liter, the engine character is prioritizing low-RPM tractability, mechanical longevity and relaxed throttle response over peak redline numbers.
On the scales, the Sum-up 125 measures 115 kg (254 lbs) dry, translating to a power-to-weight ratio of 0.06 HP/kg (15.75 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. The 6-liter (1.6 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Specific Output
58.6 HP/L
Power-to-Weight
0.06 HP/kg (15.75 kg/HP)
Standover Height
770 mm (30.3 in)
Engine
Displacement124.6 ccm (7.60 cubic inches)
Engine TypeSingle cylinder, two-stroke
Engine DetailsSingle cylinder, two-stroke
Power7.3 HP (5.3 kW))
Fuel SystemCarburettor
IgnitionCDI
CoolingAir
Transmission
GearboxAutomatic
Final DriveChain (final drive)
Performance
ExhaustEuro 3
Wheels & Brakes
Front Tyre130/60-13
Rear Tyre130/60-13
Front BrakesSingle disc
Rear BrakesSingle disc
Dimensions & Weight
Dry Weight115.0 kg (253.5 pounds)
Power/Weight0.0635 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.
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.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
