Scooters
2012Derbi Sonar 125 4T
33 fields on record
The 2012 Derbi Sonar 125 4T is an automatic scooter designed for urban commuters and entry-level riders seeking economical, hassle-free transportation. Its air-cooled single-cylinder four-stroke engine delivers modest but practical power with reliable carburetor fueling and automatic belt transmission. Known for simplicity, fuel efficiency and manageable handling, it excels in congested city environments.
- Capacity
- 124.0 ccm
- Engine
- Single, four-stroke
- Gearbox
- Not on record
Know it? Add it → - Dry weight
- 99.0 kg
- Seat height
- 805 mm
- Power
- 10.6 HP (7.8 kW) @ 8000 RPM
What’s new for the 2012 Derbi Sonar 125 4T
vs the 2011| Spec | 2011 | 2012 |
|---|---|---|
| Front suspension | 32 mm fork. | Hydraulic fork |
| Rear suspension | Monoshock | Single shock absorber |
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Designed primarily for short urban commutes and light everyday errands rather than performance or long-distance riding.
- Built for
- A practical, low-maintenance 125cc automatic scooter that prioritizes ease of use and city convenience over excitement.
- Not ideal for
- Not suitable for highway touring, spirited cornering, or off-road use given its low power and scooter chassis.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Will it fit you?
Worked out in your browser - nothing is sent to usEngine
- Capacity
- 124.0 ccm
- Power
- 10.6 HP (7.8 kW) @ 8000 RPM
- Torque
- 9.6 Nm (1.0 kgf-m) @ 7250 RPM
- Engine type
- Single, four-stroke
- Power/weight ratio
- 0.1071 HP/kg (dry)
- Bore x stroke
- 57.0 x 48.6 mm
- Compression
- 10.6:1
- Cooling system
- Air
- Fuel system
- Carburettor
- Starting
- Electric
- Lubrication system
- Mechanical oil pump
Transmission
- Transmission type
- Automatic
- Final drive
- Belt
- Clutch
- Automatic centrifugal
Dimensions & weight
- Wheelbase
- 1325 mm
- Overall length
- 1930 mm
- Overall width
- 740 mm
- Seat height
- 805 mm
- Dry weight
- 99.0 kg
- Wet weight
- 109.0 kg
- Fuel capacity
- 6.00 litres
Chassis & suspension
- Front suspension
- Hydraulic fork
- Rear suspension
- Single shock absorber
- Front wheel travel
- 76 mm
- Rear wheel travel
- 64 mm
Brakes & wheels
- Front brakes
- Single disc
- Front brakes diameter
- 220 mm
- Rear brakes
- Expanding brake (drum brake)
- Rear brakes diameter
- 140 mm
- Front tyre
- 90/80-16
- Rear tyre
- 110/80-14
Other
- Color options
- White, black
Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.
What changed, year to year
Differences highlighted| Specification | 2010 | 2011 | 2012 |
|---|---|---|---|
| Capacity | 124 cc | 124 cc | 124 cc |
| Dry weight | 99 kg | 99 kg | 99 kg |
| Seat height | 805 mm | 805 mm | 805 mm |
| Fuel capacity | 8 L | 6 L | 6 L |
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Rider Reviews
Common questions
What is the engine size of the Derbi Sonar 125 4T?
The 2012 Derbi Sonar 125 4T has a Capacity of 124.0 ccm (7.57 cubic inches).
What engine power does the Derbi Sonar 125 4T have?
The 2012 Derbi Sonar 125 4T has a Power of 10.6 HP (7.8 kW) @ 8000 RPM.
What is the torque of the Derbi Sonar 125 4T?
The 2012 Derbi Sonar 125 4T has a Torque of 9.6 Nm (1.0 kgf-m or 7.1 ft.lbs) @ 7250 RPM.
How much does the Derbi Sonar 125 4T weigh?
The 2012 Derbi Sonar 125 4T has a Dry weight of 99.0 kg (218.3 pounds).
Shop this bike
Affiliate linksWe may earn a commission from qualifying eBay or Amazon purchases made through these links. As an Amazon Associate I earn from qualifying purchases.
Please log in or register if you'd like to leave a comment.
Own one? Add it to My Garage and write an owner review with an Owner badge.