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

Derbi Sonar 125 4T

$2,099

Key specifications

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

Overview

Introducing the 2012 Derbi Sonar 125 4T, a stylish and agile scooter that is expertly crafted for urban commuting and everyday adventures. As a product of the renowned Spanish brand Derbi, known for its innovative designs and reliable performance, the Sonar 125 4T occupies an appealing niche in the scooter market. Priced at an accessible €2099, this model combines practicality with a touch of flair, making it an ideal choice for riders seeking a blend of efficiency and fun in their daily rides. At the heart of the Sonar 125 4T is a robust single-cylinder, four-stroke engine with a displacement of 124cc. This spirited powerplant generates 10.60 horsepower at 8000 RPM and a torque of 9.60 Nm at 7250 RPM, delivering a lively yet manageable performance for both novice and experienced riders alike. The automatic gearbox and centrifugal clutch ensure smooth acceleration and hassle-free gear shifts, allowing you to navigate through city traffic with confidence. Coupled with a lightweight frame at just 99 kg (218.3 lbs), the Sonar offers a nimble and responsive ride, making it a breeze to maneuver through tight corners and crowded streets. The 2012 Sonar 125 4T is packed with features that enhance both comfort and convenience. Its electric starter provides effortless ignition, while the hydraulic front fork and single shock absorber rear suspension work together to deliver a smooth ride over a variety of road conditions. The scooter is equipped with a single disc brake at the front and an expanding drum brake at the rear, ensuring reliable stopping power when you need it most. With a fuel capacity of 6 liters (1.59 gallons), you can enjoy an extended range, allowing for longer rides without frequent refueling stops. Available in sleek color options of white and black, the Sonar 125 4T stands out with its modern aesthetics, making it not just a mode of transport, but a statement of style. **

Pros

  • Excellent Maneuverability: Lightweight design (99 kg) and compact dimensions (1930 mm length) make it easy to navigate urban environments.
  • Fuel Efficiency: The 124cc engine strikes a balance between performance and economy, offering a practical range for daily commuting.
  • User-Friendly Features: Automatic transmission and electric start enhance the riding experience, making it accessible for riders of all skill levels.

Cons

  • Limited Power for High Speeds: With a maximum power of 10.60 HP, it may not satisfy those looking for high-speed performance or highway capability.
  • Basic Braking System: The drum brake at the rear may not provide the same level of stopping performance as a disc brake in more demanding conditions.
  • Minimal Storage Space: While designed for commuting, the scooter may lack adequate storage options for longer trips or carrying larger items.

Technical details

Source specification data

Make
Derbi
Model
Sonar 125 4T
Price
Euro
2099.
Prices
depend on country, taxes, accessories, etc.
Category
Scooter
Starter
Electric
Comments
Spanish brand.
Color Options
White, black
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
Driveline
Automatic CVT
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
Emission Details
Compartment underthe seat to hold a jet helmet.
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
6.00 litres (1.59 gallons)
Overall Width
740 mm (29.1 inches)
Overall Length
1,930 mm (76.0 inches)
Power Weight Ratio
0.1071 HP/kg
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
Hydraulic fork
Rear Brakes Diameter
140 mm (5.5 inches)
Front Brakes Diameter
220 mm (8.7 inches)

Available colors

Whiteblack