Fast Answer for Busy Riders ⚡ (TL;DR)
If you care about how your scooter looks, how easily it carries, and how little fuss it makes, the UNAGI Model One is the better overall package for short, urban commutes on decent pavement. It feels more refined, better built, and far easier to live with day to day, as long as you accept its modest range and firm ride. The Hiboy S2 fights back hard on price and features, and makes sense if your budget is tight and you absolutely want maximum value per euro above all else. Just be prepared for a harsher ride, more "budget" feel, and some long-term durability compromises.
If that sounds like a close call, it is - and the right choice depends heavily on where you ride and what annoys you more: spending extra upfront, or living with compromises every single day. Keep reading - the real differences only become obvious once the kilometres start piling on.
The e-scooter world loves extremes: absurdly powerful monsters on one side and wobbly toy scooters on the other. UNAGI Model One and Hiboy S2 both try to carve out a saner middle ground - compact, commuter-focused, and small enough to live with indoors without turning your hallway into a pit lane.
One is a design object that just happens to move you around; the other is a spreadsheet-approved bargain that promises "all you really need" for less than a decent phone. The UNAGI Model One is for the rider who wants their scooter to look like it belongs in a design museum. The Hiboy S2 is for the rider who wants it to pay for itself in avoided bus fares, fast.
I've put real kilometres on both, on nice bike lanes and on the kind of cracked pavement that makes city engineers blush. They may target the same rider on paper, but out in the wild they behave very differently. Let's dig in where it actually matters.
Who Are These For, and Why Compare Them?
These two sit in that "practical urban commuter" class: light enough to carry, fast enough to feel useful, and (in theory) comfortable enough for daily use. Neither is trying to be a 30-kg dual-motor monster that scares pedestrians and annoys regulators.
The UNAGI Model One plays in the luxury-lightweight segment. It's priced like a premium gadget, not a bargain basement tool. Think short inner-city hops, pairing with public transport, and riders who are more likely to own a MacBook than a torque wrench.
The Hiboy S2 lives in the budget-commuter universe: aggressively priced, very mainstream, and widely available online. It's for people who are scooter-curious but not yet ready to throw four figures at the problem.
They overlap because both claim to solve the same problem - the daily city commute - but they approach it from completely different philosophical angles: UNAGI sells polish and portability, Hiboy sells features and "enough performance" for as little cash as possible.
Design & Build Quality
Pick up the UNAGI and it immediately feels like a deliberately designed object. The tapered carbon stem, magnesium cockpit, and clean, wire-free silhouette give it an almost absurdly polished presence for something that lives in bike lanes. Everything you touch - from the silicone deck to the folding hinge - feels tight and precise, like it's been thought about more than is strictly necessary for an e-scooter.
The Hiboy S2, in contrast, is very much "good industrial tool". Aluminium frame, familiar Xiaomi-style geometry, visible cabling near the handlebars, and a general impression that it's been optimised on an Excel sheet, not a sketchbook. It doesn't look bad, just anonymous. You won't get strangers asking about it at traffic lights; you will get the sense it'll survive leaning against a lamppost for a year.
Build quality is where the divergence grows. The UNAGI feels tightly assembled with minimal rattles, even after many kilometres. The hinge is particularly impressive - still snug, still confidence-inspiring. On the Hiboy, things are solid out of the box, but over time small tells show up: a bit of stem play if you don't keep on top of the bolts, a rear fender that likes to vibrate, and a latch that starts stiff, loosens, and then needs occasional attention to stay happy.
In the hand, the UNAGI is more "premium gadget"; the Hiboy is more "decent power tool". One you're slightly protective of, the other you don't mind scuffing - which can actually be a plus, depending on your temperament.
Ride Comfort & Handling
Both scooters make a big promise: solid tyres, no punctures, no drama. The bill for that promise is paid in comfort, and each pays it differently.
The UNAGI skips suspension entirely and relies on small solid tyres with honeycomb cut-outs. On smooth tarmac or polished cycle paths, it feels wonderfully sharp and precise, almost like carving on skates. As soon as the surface deteriorates - expansion joints, patched asphalt, cobbles - the scooter stops asking and starts telling. The carbon stem and rigid cockpit transmit a lot of vibration to your hands. After several kilometres on rough city streets, you'll know exactly how many joints your fingers have.
The Hiboy S2 takes a more "band-aid" approach: similar solid tyres, but with dual rear springs trying to rescue comfort. On bigger hits - curb cuts, deeper cracks - those springs genuinely help, smoothing out what would otherwise be nasty thuds. Unfortunately, they can't erase the high-frequency chatter from mediocre asphalt. The front end, without suspension, still bangs into imperfections, and the deck and rear can rattle over bad surfaces. It's less punishing on sharp bumps than the UNAGI, but not what anyone would call plush.
Handling-wise, the UNAGI feels lighter on its feet. The low weight and compact dimensions make it easy to thread through pedestrians and dance around potholes, which, given the lack of suspension, you'll be doing a lot. It rewards a light touch and active riding. The Hiboy is slightly heavier and feels more planted in a straight line, but a bit more lumbering in quick direction changes. On tight, busy bike lanes, the UNAGI feels nimble; on longer, flatter sections, the Hiboy's extra stability is welcome.
Performance
On paper, these scooters live in the "sensible urban speeds" range. In practice, they each put their modest power to work in very different ways.
The dual-motor UNAGI (E500 version) has a distinct advantage off the line. Both wheels pulling give it a clean, confident shove away from traffic lights, without the front-wheel scrabbling you sometimes get from single-motor budget scooters. It's not ferocious, but for such a light machine, it feels eager. Up to the usual legal speed ceiling, acceleration is brisk enough to slot into city traffic without feeling like dead weight.
The Hiboy's single front motor is less energetic but entirely adequate for typical commuting. It rolls off the line smoothly rather than urgently, building speed in a predictable, linear way. In its faster mode it will out-pace the stock-limited UNAGI at the very top end, but it never feels particularly lively; it's more "let's go" than "whee!". For new riders, that docility can be reassuring.
On hills, the UNAGI's dual motors give it a noticeable advantage, especially for lighter and medium-weight riders. Short urban climbs and bridges are dispatched with a lot more confidence than you'd expect from such a slender scooter, and it holds speed better when the gradient bites. The Hiboy will tackle moderate inclines, but if you're near the upper end of its weight limit or your city is fond of steep streets, it can slow to an unenthusiastic trundle, especially once the battery dips.
Braking is another philosophical split. UNAGI leans on electronic braking at both wheels, with a manual fender stomp as backup. Once you adapt to the thumb lever feel, it's smooth and predictable, but there's less of that reassuring, mechanical "bite" you get from discs. The Hiboy throws everything at stopping: regenerative braking plus a mechanical rear disc activated from the same lever. The result is strong deceleration, bordering on abrupt until you learn to modulate it. In heavy traffic, I'd rather have "slightly too much brake" than not quite enough, and the Hiboy lands on the right side of that line.
Battery & Range
Manufacturer range figures are the fairy tales of the scooter world. Real-world numbers are much less flattering, and both of these are no exception.
The UNAGI's battery is frankly modest. Ridden the way most people actually ride - full power, stop-start city traffic, a few hills, average-weight rider - you're in "short commute only" territory. It will comfortably do inner-city hops, but if your one-way trip starts to approach low double-digit kilometres, you'll be watching the battery bars more than you'd like. It's very much a last-mile tool, not a cross-town tourer.
The Hiboy's pack is a size up and it shows. In similar conditions, you can stretch your rides noticeably further before the anxiety kicks in. It's still not a long-distance machine - you won't be replacing intercity trains - but typical there-and-back commutes within urban limits are more realistic without mid-day charging. Push it hard in the faster mode and you'll still burn through the battery quicker than the spec sheet suggests, but the margin is kinder than on the UNAGI.
Both charge in a similar timeframe - a long lunch or an afternoon at the office will take them from flat to full - and both chargers are backpack-friendly bricks. In day-to-day terms, though, the Hiboy simply gives you more usable kilometres before you're hunting for a socket. If your daily route is genuinely short and predictable, the UNAGI is fine; if you like detours, errands, or just not thinking too much about it, the Hiboy is easier to live with.
Portability & Practicality
This is where the UNAGI really claws back ground. It is light enough that carrying it up a couple of flights feels like hauling a hefty laptop bag, not gym equipment. The slim, sculpted stem makes for a comfortable grab handle, and the folding mechanism deserves every bit of praise it gets: one button, one movement, satisfying click, done. In crowded trains or narrow stairwells, that smooth action matters far more than any spec sheet heroics.
The Hiboy is still portable, but you definitely notice the extra weight. Carrying it up two floors is doable; five floors, and you'll start questioning your life choices. The folding latch is more traditional - you unlock a lever at the base, swing the stem down to hook onto the rear fender. It works, but when new it can be stubborn, and you don't get that same "precision tool" feel that the UNAGI gives. Folded size is compact enough for public transport, but it's chunkier in both weight and shape.
In practical everyday use, the UNAGI disappears under desks and beside café tables in a way the Hiboy just doesn't quite manage. If your routine involves several fold-carry-unfold cycles every day, the UNAGI's portability isn't a minor bonus - it's the whole point. The Hiboy is happiest when it lives at ground level and only sees stairs occasionally.
Safety
Both scooters tick the main boxes, but they approach safety with different priorities and different compromises.
The UNAGI's dual electronic braking is smooth and maintenance-free, but it's entirely dependent on the electronics behaving and the battery having juice. The rear friction fender is a useful last resort, though not something you'll want to rely on every day. Lighting is cleanly integrated and bright enough for urban speeds, but all mounted fairly low. In heavy traffic, I'd still add a helmet light or clip-on rear flasher to get myself into driver eye-lines.
The Hiboy feels more traditional: electronic brake plus a real disc grabbing the rear wheel. In practice, the combined system pulls the scooter down from speed convincingly, with a firm lever feel that experienced cyclists will appreciate. Its lighting package is a genuine standout for the price - front headlight, brake-responsive tail light, and those side/deck lights that make you much more visible from awkward angles. At night, the Hiboy announces itself more clearly than the UNAGI.
Tyre choice is a mixed bag on both. The solid designs mean no blowouts, which is a safety win, but they're less forgiving on wet or dusty surfaces. The Hiboy, in particular, can feel skittish in the rain or on painted crossings; the UNAGI isn't immune either. In both cases, defensive riding and dry-weather bias are strongly recommended. Stability at commuting speeds is acceptable on both, though the Hiboy's slightly longer, heavier chassis feels a touch calmer in straight-line runs.
Community Feedback
| UNAGI Model One | HIBOY S2 |
|---|---|
| What riders love Design, portability, zero-maintenance tyres and brakes, surprisingly strong dual-motor hill performance, rock-solid folding mechanism, premium feel and finish, responsive customer support. |
What riders love Low price, no-flat tyres, strong braking, decent top speed, app features, side lighting, rear suspension, and the sense of getting "more scooter than expected" for the money. |
| What riders complain about Harsh ride on rough surfaces, short real-world range, high purchase price for the battery size, small deck, lack of mechanical hand brake feel, and hand fatigue on long bumpy stretches. |
What riders complain about Rough, noisy ride on anything but good tarmac, weak wet-weather grip, developing stem wobble, rattling fender, occasional error codes, and range falling well short of optimistic claims. |
Price & Value
On the face of it, this looks like a mismatch. The Hiboy S2 comes in at a fraction of the UNAGI's asking price and offers more range, similar speed, suspension, an app, and solid braking. If you're comparing in pure numbers-per-euro, the Hiboy simply buries the UNAGI. For a cost-conscious commuter wanting the most utility for the least money, that's hard to argue with.
But value is not just arithmetic. The UNAGI is unquestionably expensive for what it offers on paper, yet it delivers in areas spreadsheets don't capture very well: how easy it is to carry, how neatly it folds, how refined the controls feel, and how little faff it adds to your day. If you're using it twice a day, five days a week, the difference between "ah, this thing again" and "this is actually pleasant" adds up quickly.
Still, you have to really want that refinement - and be willing to pay for it - because the Hiboy does get you most of the way there functionally for a lot less. If budget is tight, you're unlikely to regret going Hiboy. If you can afford to be picky about experience, the UNAGI's advantages are real, just expensive.
Service & Parts Availability
Both brands have established themselves strongly online, with decent parts availability and reasonable responses to warranty issues.
UNAGI behaves like a premium electronics brand: polished communication, structured support, and a tendency to replace rather than endlessly troubleshoot. That said, the scooter's tightly integrated design means DIY repairs are less straightforward. You're more likely to ship or hand it to a specialist than crack it open yourself with a socket set.
Hiboy lives squarely in the mass-market ecosystem. Spares and clone parts are easy to find, and there's a large community of owners sharing fixes and how-tos. Customer service is generally reported as responsive, especially considering the price bracket. The scooter itself is more "open" mechanically, so local bike or scooter shops are more willing to poke at it, and home mechanics can address many issues with basic tools.
In short: UNAGI feels more curated but locked-down; Hiboy feels more generic but fixable. For European riders, neither brand has the brick-and-mortar presence of some big names, so you're relying on shipping and your own patience either way.
Pros & Cons Summary
| UNAGI Model One | HIBOY S2 |
|---|---|
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Cons
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Parameters Comparison
| Parameter | UNAGI Model One | HIBOY S2 |
|---|---|---|
| Motor power (nominal) | 500 W (2 x 250 W) | 350 W |
| Top speed (claimed) | 25 km/h (unlockable ~32 km/h) | 30 km/h |
| Max range (claimed) | 24,95 km | 27 km |
| Realistic range (avg rider) | ≈ 14 km | ≈ 18 km |
| Battery energy | 281 Wh | 270 Wh |
| Battery voltage / capacity | 33,6 V / 9 Ah | 36 V / 7,5 Ah |
| Weight | 12,02 kg | 14,50 kg |
| Brakes | Dual electronic E-ABS + rear friction fender | Front electronic regen + rear mechanical disc |
| Suspension | None | Dual rear springs |
| Tyres | 7,5-inch solid honeycomb rubber | 8,5-inch solid honeycomb rubber |
| Max load | 125 kg | 100 kg |
| Water resistance | Not specified | IPX4 |
| Approx. price | 955 € | 256 € |
Final Verdict - Which Should You Choose?
Seen through a purely rational lens, the Hiboy S2 is extremely hard to beat: it's cheap, decently quick, has more usable range than the UNAGI, throws in suspension and app features, and generally does a competent job of getting you from A to B without drama. If your priority is extracting maximum utility per euro and you're willing to accept a harsher ride and some budget-grade quirks, it's a very understandable choice.
However, commuting is not just about function; it's about how a machine integrates into your life. Here, the UNAGI quietly wins more often than it loses, provided your use-case fits its limitations. It's significantly lighter, much more pleasant to carry, better finished, and simply nicer to interact with every single time you fold, lift, and ride it. If your daily trips are short, your roads reasonably smooth, and you can stomach the premium price, the UNAGI delivers an experience that feels more mature and less like a compromise, even if the spec sheet doesn't scream "value".
In short: tight budget, mixed distances, not overly fussy about refinement? Go Hiboy S2. Short, predictable urban hops, strong bias towards portability and build quality, and you're happy to pay for it? The UNAGI Model One is the more satisfying long-term companion.
Numbers Freaks Corner
| Metric | UNAGI Model One | HIBOY S2 |
|---|---|---|
| Price per Wh (€/Wh) | ❌ 3,40 €/Wh | ✅ 0,95 €/Wh |
| Price per km/h of top speed (€/km/h) | ❌ 38,20 €/km/h | ✅ 8,53 €/km/h |
| Weight per Wh (g/Wh) | ✅ 42,79 g/Wh | ❌ 53,70 g/Wh |
| Weight per km/h (kg/km/h) | ✅ 0,48 kg/km/h | ✅ 0,48 kg/km/h |
| Price per km of real-world range (€/km) | ❌ 68,21 €/km | ✅ 14,22 €/km |
| Weight per km of real-world range (kg/km) | ❌ 0,86 kg/km | ✅ 0,81 kg/km |
| Wh per km efficiency (Wh/km) | ❌ 20,07 Wh/km | ✅ 15,00 Wh/km |
| Power to max speed ratio (W/km/h) | ✅ 20,00 W/km/h | ❌ 11,67 W/km/h |
| Weight to power ratio (kg/W) | ✅ 0,0240 kg/W | ❌ 0,0414 kg/W |
| Average charging speed (W) | ❌ 62,44 W | ✅ 67,50 W |
In plain language: price-related metrics overwhelmingly favour the Hiboy - it gives you more range, speed, and energy storage per euro. Weight- and power-related metrics lean towards the UNAGI - it squeezes more performance out of less mass, which you feel when carrying it and when accelerating. Efficiency per kilometre and charging speed again tilt towards the Hiboy, making it the clear mathematical winner on running costs and energy use, even if the riding experience tells a more nuanced story.
Author's Category Battle
| Category | UNAGI Model One | HIBOY S2 |
|---|---|---|
| Weight | ✅ Noticeably lighter to carry | ❌ Heavier, more effort upstairs |
| Range | ❌ Short, very commute-specific | ✅ More forgiving daily range |
| Max Speed | ❌ Slower in stock form | ✅ Higher usable top speed |
| Power | ✅ Dual motors pull stronger | ❌ Single motor, less grunt |
| Battery Size | ✅ Slightly more Wh onboard | ❌ Marginally smaller battery |
| Suspension | ❌ None, fully rigid | ✅ Rear suspension helps impacts |
| Design | ✅ Iconic, premium, cohesive | ❌ Generic, functional look |
| Safety | ❌ Less aggressive braking feel | ✅ Strong brakes, better lighting |
| Practicality | ✅ Better for multi-modal use | ❌ Less friendly to carry often |
| Comfort | ❌ Harsh, no suspension | ✅ Rear springs ease bigger hits |
| Features | ❌ Fewer settings, no app | ✅ App, cruise, tuning options |
| Serviceability | ❌ Closed, harder to tinker | ✅ Simpler, easier to repair |
| Customer Support | ✅ Polished, premium-style support | ✅ Responsive, generous for price |
| Fun Factor | ✅ Lively dual-motor feel | ❌ Competent but less playful |
| Build Quality | ✅ Tighter, fewer long-term rattles | ❌ More play, rattles emerge |
| Component Quality | ✅ Higher-grade materials used | ❌ Budget-oriented components |
| Brand Name | ✅ Strong lifestyle branding | ❌ Value brand positioning |
| Community | ✅ Smaller but passionate base | ✅ Large, active user base |
| Lights (visibility) | ❌ Lower, less side presence | ✅ Side lights increase visibility |
| Lights (illumination) | ✅ Bright, well-integrated beam | ✅ Good brightness, wide presence |
| Acceleration | ✅ Snappier off the line | ❌ Slower, more gradual |
| Arrive with smile factor | ✅ Feels special, gadget-like | ❌ Functional more than exciting |
| Arrive relaxed factor | ❌ Vibration fatiguing on bad roads | ✅ Slightly kinder over distance |
| Charging speed | ❌ Slightly slower to refill | ✅ Charges marginally quicker |
| Reliability | ✅ Fewer recurring error quirks | ❌ Known throttle / wobble issues |
| Folded practicality | ✅ Slim, easy to stash | ❌ Bulkier triangle when folded |
| Ease of transport | ✅ One-hand carry manageable | ❌ Heavier, awkward for some |
| Handling | ✅ More agile, nimble feel | ❌ Stable but less precise |
| Braking performance | ❌ Softer electronic primary brake | ✅ Stronger, mechanical bite |
| Riding position | ✅ Neutral for average riders | ❌ Lower bar for tall users |
| Handlebar quality | ✅ Solid magnesium cockpit | ❌ More basic, some flex |
| Throttle response | ✅ Smooth, well-tuned curve | ❌ Less refined, more basic |
| Dashboard / Display | ✅ Sleek, very well integrated | ❌ Functional, more generic look |
| Security (locking) | ❌ No electronic lock features | ✅ App lock motor brake |
| Weather protection | ❌ Less defined water rating | ✅ IPX4, light rain capable |
| Resale value | ✅ Strong brand, holds better | ❌ Budget scooter, drops faster |
| Tuning potential | ❌ Closed ecosystem, limited mods | ✅ More hackable, parts available |
| Ease of maintenance | ❌ Tight integration, tricky access | ✅ Straightforward, DIY-friendly |
| Value for Money | ❌ Pricey for what you get | ✅ Excellent bang for buck |
Overall Winner Declaration
In the Numbers Freaks Corner, the UNAGI Model One scores 4 points against the HIBOY S2's 7. In the Author's Category Battle, the UNAGI Model One gets 23 ✅ versus 19 ✅ for HIBOY S2 (with a few ties sprinkled in).
Totals: UNAGI Model One scores 27, HIBOY S2 scores 26.
Based on the scoring, the UNAGI Model One is our overall winner. For me, living with both over time, the UNAGI Model One edges it not because it's the bargain - it very clearly isn't - but because it integrates into daily life with less friction and more quiet satisfaction. It feels like a finished product rather than a bundle of parts chosen to hit a price point, and on short city hops that matters more than spec-sheet bragging rights. The Hiboy S2 absolutely earns its place as the sensible head's pick, especially if you're counting every euro, but the UNAGI is the one that's more likely to make you look forward to your commute rather than merely tolerate it. If you can afford that difference, you'll feel it every time you step on, fold up, or carry it home.
That's our verdict when we try to stay objective – but hey, riding is mostly about emotions anyway, so pick the one that will make you look forward to your commute every single day.

