Vivi MT20UL Fat Tire Electric Bike: Is This Compact E-Bike Worth It?

The Vivi MT20UL offers incredible value at $400 with UL certification, folding design, and fat tires for all-terrain riding, making it perfect for budget-conscious commuters and apartment dwellers who need compact storage.

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Key Specifications

Motor
500W (Peak 1000W)

Best For

How this e-bike scores for different riding styles

Compact & Portable
90/100

Excellent foldable design with 20-inch wheels makes this highly portable for apartment storage, car trunks, and public transit. The combination of compact size and folding capability is ideal for space-constrained living.

Daily Commuting
82/100

The 44-50 mile range in pedal-assist mode easily covers typical commutes, while the folding design allows for easy storage at work or home. The 21.7 mph max speed is adequate for urban commuting, though lack of integrated lights is a drawback.

Recreational Leisure
75/100

The comfortable fat tires, cruise control, and adjustable seat/handlebars make this suitable for casual rides. However, the sporty riding position and lack of step-through design may not appeal to all leisure riders.

Off-Road Adventure
68/100

The 3.0-inch fat tires and 1000W peak motor provide decent all-terrain capability, but only rear suspension and 20-inch wheels limit serious trail performance. Better suited for light off-road paths than challenging mountain biking.

High Performance
55/100

The peak 1000W motor provides decent power, but the 21.7 mph max speed is modest for performance enthusiasts. The smaller 20-inch wheels and focus on portability compromise top-end performance capabilities.

Cargo & Utility
45/100

No rear rack, limited frame size, and no specified weight capacity make this poorly suited for cargo hauling. The compact 20-inch frame prioritizes portability over load-carrying ability.

Our Verdict

The Vivi MT20UL is a smart choice if you want an e-bike that won't break the bank but still does the job well. At $400, it costs less than most e-bikes while giving you important safety features like UL certification and dual disc brakes. The bike folds in half, which is perfect if you live in a small apartment or want to take it on the bus or train. The thick 3-inch tires help you ride on different surfaces like dirt paths, sand at the beach, or snowy sidewalks. You can go up to 50 miles if you pedal while the motor helps, or about 25 miles if you just use the throttle without pedaling. The battery slides out so you can bring it inside to charge instead of parking your bike next to an outlet.

This bike works great for people who ride to work or school every day and need something that fits in tight spaces. The folding design means you can store it under your desk or in a closet instead of locking it outside. It's also good for running errands around town or going for fun rides on weekends. The cruise control feature is nice for long, flat stretches because your thumb can rest instead of holding the throttle. People who live in cities will like how easy it is to store and move around. The fat tires make riding comfortable even on bumpy streets or bike paths.

However, this bike isn't perfect for everyone. If you want to ride really fast, the 22 mph top speed might feel slow compared to bikes that go 28 mph. Serious mountain bikers will want something with better suspension on both wheels, not just the back. The bike doesn't come with lights, so you'll need to spend extra money to add them for safe night riding. There's no rack on the back for carrying groceries or bags, and no USB port to charge your phone while you ride. If you're tall or want to carry lots of stuff, you might want a bigger bike. But for most people who want a cheap, foldable e-bike for getting around town, this is a really good deal.

What We Like

  • Amazing price at just $400 makes this one of the most affordable UL-certified e-bikes available
  • Folds up for easy storage in small apartments, car trunks, or under desks at work
  • Fat 3-inch tires grip well on sand, snow, gravel, and city streets for all-season riding
  • Battery removes easily so you can charge it inside without bringing the whole bike
  • Goes up to 50 miles on one charge when you pedal along, perfect for daily trips around town

What Could Be Better

  • No built-in lights means you need to buy and attach your own for safe night riding
  • Smaller 20-inch wheels make it feel less stable at top speeds compared to bigger bikes
  • Only has rear suspension so bumps hit harder on your hands and arms on rough roads
  • Max speed of 22 mph is slower than many e-bikes that can hit 28 mph or more
  • Missing helpful extras like a phone charging port, rear rack for bags, or smartphone app

Standout Features

UL 2849 Safety Certification
Rare to find UL certification at this budget price point, providing verified electrical and fire safety standards
Foldable Frame with 20-inch Fat Tires
Combines portability with all-terrain capability, offering 3.0-inch wide tires uncommon on compact folding e-bikes
Peak 1000W Motor at $400 Price
Delivers above-average power for the budget category, with peak output rivaling bikes costing $800-1200

Full Specifications

Performance

Motor Power500W (Peak 1000W)

Build & Frame

Frame MaterialAluminum
Frame Size20 inches
Wheel Size20 inches

Features

Included Features

Cruise Control
Fat Tires
Foldable
LCD Display
Pedal Assist
Removable Battery
Suspension
Throttle
UL Certified

Not Included

App Connectivity
Fenders
Integrated Lights
Rear Rack
USB Charging
Walk Mode

Frequently Asked Questions

Common questions about Vivi MT20UL Electric Bike 20" x3.0 Fat Tire Electric Bike with 48V 499.2WH Removable Battery, Peak 1000W, 7-Speed, 21.7MPH, Cruise Control, LCD Display, Up to 50 Miles EBikes, SGS Certified to UL2849

How far can this bike go on one battery charge?

It can go 44 to 50 miles if you pedal while the motor helps you, or 22 to 25 miles if you just use the throttle without pedaling. How far you actually go depends on how much you weigh, how hilly the roads are, and how fast you ride.

Can I fold this bike to fit in my car or apartment?

Yes, the bike folds in half so you can store it in small spaces like a car trunk, closet, or under a desk. The 20-inch wheels make it extra compact when folded compared to bigger bikes.

Is this bike safe to ride and does it meet safety standards?

Yes, it has SGS certification to UL 2849 standards, which means it passed tests for battery safety and electrical systems. It also has disc brakes on both wheels for good stopping power in wet or dry conditions.

How long does it take to charge the battery fully?

The battery takes 4 to 6 hours to charge all the way from empty to full. You can take the battery off the bike and charge it inside your home or office.

What kind of terrain can this bike handle with the fat tires?

The 3-inch wide fat tires work well on city streets, gravel paths, sandy beaches, and even snow. They help smooth out bumps and give you good grip on different surfaces, though it's better for light trails than serious mountain biking.

Scores

Overall Score 68/100
Value Score 88/100
Popularity 78/100

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Tags

budget friendly foldable commuter all terrain capable ul certified safety compact storage fat tire folding removable battery best value under 500

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