Back to Bike FinderYears: 2012 · 2011 · 2010
Derbi Sonar 125 4T
2010Scooter

Derbi Sonar 125 4T

Key specifications

Engine
124 cc
Power
11 HP
Torque
10 Nm
Weight
99 kg
Fuel type
petrol
Fuel capacity
2.1 L
Transmission
Automatic
Seat height
32 mm
Front brakes
Single disc
Rear brakes
Expanding brake (drum brake)

Overview

Introducing the 2010 Derbi Sonar 125 4T, a stylish and practical scooter that effortlessly blends performance with the charm of urban mobility. Designed by the renowned Spanish manufacturer Derbi, this scooter targets riders who value agility, ease of use, and a touch of flair. With a sleek design and a lightweight chassis, the Sonar 125 4T is perfect for city dwellers and commuters alike, offering a reliable ride that stands out in the crowded scooter market. At the heart of the Sonar 125 4T is its robust single-cylinder, four-stroke engine, boasting a displacement of 124cc. Producing a healthy 10.6 horsepower at 8000 RPM and 9.6 Nm of torque at 7250 RPM, this scooter delivers a spirited performance that makes navigating urban traffic a breeze. The engine’s air-cooling system ensures efficient operation, while the automatic gearbox and centrifugal clutch provide seamless acceleration without the hassle of manual shifting. With a power-to-weight ratio of 0.1071 HP/kg, the Sonar 125 is nimble and responsive, making it an ideal companion for both new riders and seasoned enthusiasts. The 2010 Derbi Sonar 125 4T is packed with features that enhance both comfort and convenience. The scooter is equipped with a front single disc brake and a rear drum brake, ensuring reliable stopping power when you need it most. The front suspension features a 32 mm fork with 76 mm of travel, while the rear is supported by a single shock absorber, providing a balanced ride over varying road conditions. With a seat height of 805 mm, it caters to a wide range of riders, and its 8-liter fuel tank means you can enjoy longer rides without constant refueling. Not to mention, the electric starter ensures a hassle-free ignition every time you hit the road. **

Pros

  • Lightweight and Agile: At only 99 kg (218.3 pounds), the Sonar 125 is easy to maneuver, making it perfect for city riding.
  • User-Friendly Features: The automatic transmission and electric starter simplify the riding experience for both beginners and experienced riders.
  • Stylish Design: With its sleek lines and available white color, this scooter offers a modern aesthetic that appeals to a broad audience.

Cons

  • Limited Power for Highways: While great for city commuting, the 10.6 HP engine may struggle on faster roads or highways.
  • Basic Suspension: The suspension setup, while adequate for city riding, may not provide the best comfort on uneven surfaces.
  • Drum Brake at Rear: The rear drum brake may not offer the same level of performance and responsiveness as a disc brake, especially in emergency situations.

Technical details

Source specification data

Make
Derbi
Model
Sonar 125 4T
Category
Scooter
Starter
Electric
Comments
Spanish brand.
Color Options
White
Power
10.60 HP (7.7 kW)) @ 8000 RPM
Clutch
Automatic centrifugal
Torque
9.60 Nm (1.0 kgf-m or 7.1 ft.lbs) @ 7250 RPM
Gearbox
Automatic
Fuel System
Carburettor
Bore X Stroke
57.0 x 48.6 mm (2.2 x 1.9 inches)
Compression
10.6:1
Displacement
124.00 ccm (7.57 cubic inches)
Cooling System
Air
Engine Details
Single cylinder, four-stroke
Lubrication System
Mechanical oil pump
Transmission Type Final Drive
Belt
Dry Weight
99.0 kg (218.3 pounds)
Seat Height
805 mm (31.7 inches) If adjustable, lowest setting.
Fuel Capacity
8.00 litres (2.11 gallons)
Overall Width
740 mm (29.1 inches)
Overall Length
1,930 mm (76.0 inches)
Power Weight Ratio
0.1071 HP/kg
Weight Incl Oil Gas Etc
109.0 kg (240.3 pounds)
Rear Tyre
110/80-14
Front Tyre
90/80-16
Rear Brakes
Expanding brake (drum brake)
Front Brakes
Single disc
Rear Suspension
Single shock absorber
Front Suspension
32 mm fork.
Rear Wheel Travel
64 mm (2.5 inches)
Front Wheel Travel
76 mm (3.0 inches)
Rear Brakes Diameter
140 mm (5.5 inches)
Front Brakes Diameter
220 mm (8.7 inches)

Available colors

White