Scooters
2020Yamaha Aerox 4
36 fields on record
The 2020 Yamaha Aerox 4 is a sporty 50cc scooter with the four-stroke engine that replaced the old two-stroke Aerox. Its liquid-cooled 49cc single makes 3 hp at 7,240 rpm and 3.3 Nm through an automatic belt drive. An 817 mm seat, 97 kg wet weight and 6-litre tank suit young riders in town.
- Capacity
- 49.0 ccm
- Engine
- Single, four-stroke
- Gearbox
- Not on record
Know it? Add it → - Wet weight
- 97.0 kg
- Seat height
- 817 mm
- Power
- 3.0 HP (2.2 kW) @ 7240 RPM
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built purely for short-hop urban commuting and running errands, not for speed or distance.
- Built for
- A practical, nimble little scooter that prioritizes ease of use, fuel efficiency, and city maneuverability over performance.
- Not ideal for
- This is not the choice for anyone wanting highway speeds, long-distance touring, or carrying a passenger any real distance.
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
- 49.0 ccm
- Power
- 3.0 HP (2.2 kW) @ 7240 RPM
- Torque
- 3.3 Nm (0.3 kgf-m) @ 4500 RPM
- Engine type
- Single, four-stroke
- Power/weight ratio
- 0.0309 HP/kg (wet)
- Bore x stroke
- 38.0 x 43.5 mm
- Compression
- 12.0:1
- Cooling system
- Liquid
- Fuel system
- Injection
- Starting
- Electric & kick
- Ignition
- TCI
- Lubrication system
- Wet sump
Transmission
- Transmission type
- Automatic
- Final drive
- Belt
Dimensions & weight
- Wheelbase
- 1275 mm
- Overall length
- 1876 mm
- Overall width
- 706 mm
- Overall height
- 1154 mm
- Seat height
- 817 mm
- Wet weight
- 97.0 kg
- Fuel capacity
- 6.00 litres
- Ground clearance
- 118 mm
- Carrying capacity
- Under-seat helmet storage for a full-face helmet.
- Dry weight
- Not on record - add it
Chassis & suspension
- Frame
- Steel, tubular
- Front suspension
- Telescopic fork
- Rear suspension
- Hydraulic unit swing
- Front wheel travel
- 80 mm
- Rear wheel travel
- 60 mm
Brakes & wheels
- Front brakes
- Single disc
- Front brakes diameter
- 190 mm
- Rear brakes
- Single disc
- Rear brakes diameter
- 190 mm
- Front tyre
- 120/70-13
- Rear tyre
- 130/60-13
Other
- Color options
- Matte grey, blue
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 | 2014 | 2016 | 2018 | 2019 | 2020 | 2021 |
|---|---|---|---|---|---|---|
| Capacity | 49 cc | 49 cc | 49 cc | 49 cc | 49 cc | 50 cc |
| Seat height | 817 mm | 817 mm | 817 mm | 817 mm | 817 mm | 817 mm |
| Fuel capacity | 7 L | 6 L | 6 L | 6 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 Yamaha Aerox 4?
The 2020 Yamaha Aerox 4 has a Capacity of 49.0 ccm (2.99 cubic inches).
What engine power does the Yamaha Aerox 4 have?
The 2020 Yamaha Aerox 4 has a Power of 3.0 HP (2.2 kW) @ 7240 RPM.
What is the torque of the Yamaha Aerox 4?
The 2020 Yamaha Aerox 4 has a Torque of 3.3 Nm (0.3 kgf-m or 2.4 ft.lbs) @ 4500 RPM.
How much does the Yamaha Aerox 4 weigh?
The 2020 Yamaha Aerox 4 has a Wet weight of 97.0 kg (213.8 pounds).
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