Sun Emperor: Reviews and Reputation Summarized! Thorough Review of Pros and Cons to Know Before Buying

"Special Small Motorized Bicycles" (Tokutei Kogata Gentus) are rapidly gaining popularity in Japan. These vehicles can be driven on public roads by anyone 16 years or older without a driver's license, and helmet use is only a recommended effort. Among the many brands, Sun Emperor, produced by the Japanese manufacturer Ryusho Co., Ltd., has garnered overwhelming support as a highly stable, saddle-equipped (seated) mobility option.

Having achieved astounding support on crowdfunding platforms like Makuake and generating significant buzz on Rakuten Ichiba and various social media platforms, what potential buyers are most interested in is likely the "raw voices (reputation and reviews) of actual users." Especially since it's not a cheap purchase, it's crucial to understand not only the positive feedback but also the "disadvantages (shortcomings) and precautions to know before buying".

Therefore, this article thoroughly investigates real user reviews from Japan who have purchased and test-ridden Sun Emperor's main models (Easy, SS1, SUNRIN, etc.). We provide an unvarnished, in-depth review of over 3000 characters, covering its pros, cons, realistic cruising range, uphill power, and the support system unique to a domestic manufacturer!

1. Real "Good Reviews and Reputations" Online and on Social Media (Pros)

First, let's introduce the main advantages and positive feedback for Sun Emperor, which many users have praised as "a great purchase" and "made commuting dramatically easier."

① Overwhelming Stability and Less Fatigue Compared to "Stand-Up Type"

When thinking of specific small motorized bicycles, many imagine "electric kick scooters" that are ridden upright. However, Sun Emperor's biggest feature is its "seated (motorcycle/bicycle-type)" design, where you sit on a saddle to drive. High praise for this aspect is prominent on social media.

"I was scared of falling over bumps on typical electric kick scooters, but the Sun Emperor Easy feels like riding a bicycle. You sit down, so the stability is just on another level. I don't get tired at all even after riding for more than 15 minutes." (Male, 30s, commuter)

In addition to its low center of gravity design, it features high-performance front and rear suspensions that effectively absorb impacts from uneven asphalt a common sight on Japanese roads, and steps from sidewalks. This allows for stress-free long-distance travel, a point that has been well-received.

② Flexibility to Ride on Sidewalks with "Special Small Motorized Bicycle" Mode

Sun Emperor vehicles are equipped with a switching function between road mode (maximum speed 20km/h, green light constantly on) and sidewalk mode (maximum speed 6km/h, green light flashing). This sidewalk mode is legally defined as a "Special Small Motorized Bicycle (Special Small Gentu)", and its flexibility is well-regarded for fitting Japan's narrow road conditions.

"I usually ride on the left side of the road, but in areas with heavy truck traffic on main roads where it feels dangerous, I stop and switch to sidewalk mode (6km/h) to take refuge. Being able to ride flexibly means I don't feel my life is in danger." (Female, 40s, for shopping)

③ Convenience of Folding and Storing in a Car Trunk

Many Sun Emperor models (such as Easy and SS1) can be compactly folded at the handlebars and frame. This feature is highly praised by users who enjoy outdoor activities and travel. Many reviews mention the convenience of owning one, such as "It's super convenient to take it in the back seat or trunk of the car to use as transportation for business trips or sightseeing at travel destinations" and "I can store it in a small space in my entryway at home, so I don't have to worry about theft or getting rained on."

2. "Bad Reviews and Disadvantages" You Must Know Before Buying (Precautions)

While Sun Emperor receives high scores of 4 to 5 stars in e-commerce reviews, there are points (disadvantages) that some users might find lacking or that require caution before purchase, depending on Japan's road environment, user physique, and intended use. To avoid regret, be sure to keep the following drawbacks in mind.

① "Actual Cruising Range" Will Be Shorter Than Stated Due to Weight and Hill Gradient

For example, the popular 'Easy' model boasts an astonishing "maximum cruising range of approximately 80km." However, this is a theoretical value (manufacturer's measured value) based on a "60kg driver continuously riding on a flat road at a constant speed in eco mode." Real user reviews point out the following:

"My weight is nearly 80kg, and I frequently used power mode (maintaining 20km/h) in a hilly area. The actual cruising range was about 45km to 50km. It's practical enough, but if you expect it to go 80km as per the catalog specifications, you might feel a discrepancy." (Male, 20s)

This characteristic applies to all electric mobility (EVs), not just Sun Emperor. If you live in an area with many hills or carry a lot of cargo, it's safer to estimate the actual battery life to be "60% to 70%" of the stated value.

② Simple Assembly and Final Inspection Are Required After Unpacking

The product is delivered to your home in a large cardboard box, but it is not a fully assembled product. It arrives 90% to 95% assembled. Therefore, users must attach parts such as the "handlebar, saddle, rearview mirror, and front basket" themselves.

"The assembly tools were included, and it was a simple task that took about 15-20 minutes by following the instructions. However, women who are not good with machinery or elderly people living alone might find it a bit confusing. It's important to double-check at the end to ensure all screws are tightened." (Male, 50s)

If you are unsure about the initial assembly, it is recommended to get help from a family member who is good at DIY, or to carefully follow the instructions (or official explanation videos) to prevent initial defects.

③ Beware of Large "Steps (Edges of Steps)" Due to Small Tire Diameter

Compared to typical bicycles (e.g., 26 inches), Sun Emperor's tires (around 12-14 inches) are small. Although the suspension performance is good, if you approach a "steep step of 5cm or more" at the boundary between the road and sidewalk diagonally without reducing speed, there is a risk of losing control and falling. When riding over steps on Japanese roads, it is crucial to slow down to 6km/h or less (Special Small Motorized Bicycle mode) and approach the step "perpendicularly" for safe riding.