C-umi
C-umi Performance & Handling Ratings
C-umi Tire Size, Oil & Service Capacities
48V 28Ah soft lithium battery. Range 50 km. Made in China.
2021 Yadea C-umi Pros, Cons, Recalls & Verdict
- Charming, rounded retro-modern styling with a soft pastel color palette tailored for stylish lifestyle commuters
- Featherweight curb weight of around 60kg makes it exceptionally nimble to steer, park, and maneuver in tight spaces
- Removable lightweight lithium-ion battery pack can be easily carried indoors for convenient home or office recharging
- Keyless remote start, integrated alarm system, and bright circular LED headlight provide modern security and visibility
- Whisper-quiet electric hub motor delivers instant, smooth, and jerk-free acceleration from a standstill
- Top speed is legally governed to 45 km/h, preventing it from safely mixing with fast multi-lane traffic
- Under-seat storage cavity is largely occupied by the battery pack, leaving minimal space for personal belongings
- Soft suspension setup can bottom out easily when carrying a heavier rider over prominent road bumps
- Rear drum brake delivers softer braking feel compared to modern dual-disc hydraulic setups
- Real-world range of approximately 45-55 km necessitates frequent daily battery recharging for active riders
The 2021 Yadea C-umi is an adorable, fashion-conscious electric scooter that brings cheerful retro styling to zero-emissions urban travel. Its featherweight chassis, low seat height, and removable lithium battery make it one of the most non-intimidating and user-friendly two-wheelers on the market, particularly for novice riders and students. While its performance is strictly tailored for low-speed inner-city jaunts, its charming aesthetic and negligible running costs make it a delightful everyday companion.
No official safety recalls reported for this model year.
2021 Yadea C-umi Technical Analysis, Chassis Review & Ownership Overview
Built around Yadea's scooter motorcycle platform, the 2021 Yadea C-umi features a purpose-built air-cooled electric configuration. In factory specification, peak output is rated at 1.6 HP (1.2 kW), transferring power to the rear wheel through an automatic transmission, a direct electric drive (clutchless) clutch. Internal cylinder geometry specifies fuel delivery managed via electronic motor controller (direct electric drive).
On the scales, the C-umi measures 60 kg (132 lbs) wet (curb). Rider ergonomics and dimensional geometry center around a 750 mm (29.5 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops and a 1,280 mm (50.4 in) wheelbase engineered for quick, flickable turn-in geometry.
Chassis suspension hardware on the 2021 Yadea C-umi is configured for predictable road feedback with front suspension handled by Telescopic fork. Braking performance is delivered by single disc up front paired with expanding brake (drum brake) at the rear. Factory rolling stock mounts a 3-10 front tire and a 3-10 rear tire, sizing the contact patch for predictable turn-in grip and replacement tire availability.
From a licensing standpoint, its 1.2 kW output qualifies for European A1 and beginner motorcycle license tiers. Buyers cross-shopping the 2021 Yadea C-umi in the Scooter segment most frequently benchmark its horsepower, seat height, and curb weight against the Yamaha NMAX (2018), Yamaha Sight (2018), Yamaha TMAX (2018).
Before You Compare This Bike
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.
Who Is This Bike For?
C-umi Seat Height & Rider Height Fit
C-umi A1, A2 & LAMS License Compatibility
Directly compliant with the ≤35 kW (47 HP) and ≤0.20 kW/kg A2 license limit without restriction kits.
C-umi Engine Stroke, RPM & Steering Geometry
vm = 2 × Stroke × RPM / 60) measures piston travel velocity at peak power. Values under 18.5 m/s indicate low inertial stress on connecting rods and rings; values above 21.5 m/s approach Formula 1 / MotoGP velocities. C-umi Sprocket Ratio, RPM & Top Speed
C-umi Tire Pressure (PSI / Bar) & Suspension Sag
2021 Yadea C-umi Summary Table
Writing a review, forum post, or blog article on the 2021 Yadea C-umi? Copy a Markdown table or embeddable HTML spec card:
### 2021 Yadea C-umi — Key Specs & Telemetry | Parameter | Specification | | :--- | :--- | | **Category** | Scooter | | **Displacement** | N/A | | **Power Output** | 1.6 HP (1.2 kW) (0.02 kW/kg) | | **Torque** | N/A | | **Seat Height** | 750 mm (29.5 inches) If adjustable, lowest setting. | | **Weight (Dry / Wet)** | N/A / 60.0 kg (132.3 pounds) | | **Mean Piston Speed** | Standard | | **EU A2 License Status** | EU / UK A2 Compliant (Native) | | **Source & Full Telemetry** | https://motolibrary.com/bikes/yadea/c-umi/2021 |
<div style="font-family:system-ui,-apple-system,sans-serif;border:1px solid #e2dfd8;border-radius:12px;padding:14px 16px;max-width:560px;background:#ffffff;color:#1a1a1a"><div style="font-weight:700;font-size:16px;margin-bottom:8px">2021 Yadea C-umi — Technical Specs & Recall Summary</div><table style="width:100%;border-collapse:collapse;font-size:13px"><tr><td style="padding:5px 0;border-bottom:1px solid #eee;color:#666">Engine / Power</td><td style="padding:5px 0;border-bottom:1px solid #eee;font-weight:600;text-align:right">N/A · 1.6 HP (1.2 kW)</td></tr><tr><td style="padding:5px 0;border-bottom:1px solid #eee;color:#666">Seat Height</td><td style="padding:5px 0;border-bottom:1px solid #eee;font-weight:600;text-align:right">750 mm (29.5 inches) If adjustable, lowest setting.</td></tr><tr><td style="padding:5px 0;border-bottom:1px solid #eee;color:#666">Weight (Dry / Wet)</td><td style="padding:5px 0;border-bottom:1px solid #eee;font-weight:600;text-align:right">N/A / 60.0 kg (132.3 pounds)</td></tr><tr><td style="padding:5px 0;border-bottom:1px solid #eee;color:#666">License / Recall Audit</td><td style="padding:5px 0;border-bottom:1px solid #eee;font-weight:600;text-align:right">EU / UK A2 Compliant (Native) · 0 official safety recalls recorded</td></tr></table><div style="margin-top:8px;font-size:12px;color:#666">Data source: <a href="https://motolibrary.com/bikes/yadea/c-umi/2021" style="color:#bf3b00;font-weight:600;text-decoration:none">2021 Yadea C-umi Specs, Review & Recalls — MotoLibrary</a></div></div>
C-umi Annual Fuel, Maintenance & Ownership Cost
* Estimates only. Actual costs vary by country, riding habits, insurance provider and maintenance schedule.
2021 Yadea C-umi Frequently Asked Questions
Does the 2021 Yadea C-umi have any official safety recalls?
No official safety recalls reported for this model year.
What is the seat height and weight of the 2021 Yadea C-umi?
The 2021 Yadea C-umi has a seat height of 750 mm (29.5 inches) If adjustable, lowest setting., a dry weight of unspecified, and a wet/curb weight of 60.0 kg (132.3 pounds).
Is the 2021 Yadea C-umi EU A2 or LAMS license legal?
License classification: EU / UK A2 Compliant (Native). Directly compliant with the ≤35 kW (47 HP) and ≤0.20 kW/kg A2 license limit without restriction kits.