Fast Answer for Busy Riders ⚡ (TL;DR)
The Hiboy S2 wins on paper for raw performance and headline value, but in real-world daily use the NIU KQi1 Pro is the safer, more trustworthy long-term companion. The Hiboy feels quicker, goes a bit farther and costs noticeably less, yet trades that for harsher ride quality, weaker wet grip, and more "budget lottery" vibes. The NIU is slower and shorter-legged, but feels more like a real vehicle: better tyres, more planted handling, and a brand that behaves like it plans to be around in five years.
Choose the Hiboy S2 if you want maximum speed and features for minimal money and mostly ride on smooth, dry tarmac. Choose the NIU KQi1 Pro if you care more about predictability, tyre grip, and build that feels closer to an e-moped than a gadget. Now, let's dig into how they actually compare once you've ridden them for more than just a sunny Sunday test loop.
Stick around-you'll avoid at least one expensive regret by the end of this.
Electric scooters in this price bracket are brutally honest machines. There's no 3.000 W motor to dazzle you, no giant suspension arms to distract from the details. What you feel in the first hundred metres-stability, twitchiness, cheapness, confidence-is very close to what living with the scooter for a year will be like.
I've spent a lot of kilometres shuttling around city cores on both the NIU KQi1 Pro and the Hiboy S2. On paper they're obvious rivals: compact commuters, similar size, both claiming "serious vehicle" status at supermarket-adjacent prices. On the road, though, they take very different approaches to solving the same problem.
Think of the NIU as the cautious, sensibly dressed commuter who always has a rain jacket and a pension plan; the Hiboy is the younger cousin who shows up in trainers, sprints between traffic lights, and only later asks about health insurance. Both can get you to work on time-but how they do it, and how much you trust them while they're doing it, is where this comparison gets interesting.
Who Are These For, and Why Compare Them?
Both scooters sit firmly in the "budget urban commuter" class: light-ish, foldable, single-motor machines that live on bike lanes and pavements rather than in extreme off-road YouTube thumbnails. They're for people who commute under roughly ten kilometres each way, or want a first scooter that doesn't cost more than their laptop.
The NIU KQi1 Pro positions itself as the "grown-up" entry point. You get NIU's moped heritage in a stripped-back package: sensible power, capped legal speed, and a clear focus on safety and reliability rather than thrills. It's aimed at riders who want something that just works, looks respectable outside an office, and doesn't constantly whisper "what if the fork snaps?" in the back of their mind.
The Hiboy S2 is the bargain hunter's darling. It promises more speed, more range, an app, flashy lighting and no-flat solid tyres at a price that happily undercuts most big-name competitors. It's clearly targeting students, younger commuters and first-timers who want excitement and features, and are willing to accept a bit of budget roughness in exchange.
They belong in the same basket because most buyers cross-shop exactly these two questions: "Do I pay more for a safer-feeling brand scooter with air tyres, or save money and get a faster solid-tyre machine?"
Design & Build Quality
Pick them up and the difference in design philosophy hits you immediately.
The NIU KQi1 Pro feels like it was designed as a vehicle from scratch. The frame has smooth, purposeful lines, wiring is mostly tucked away, and the deck is pleasantly wide for such a compact scooter. The stem lock closes with a reassuring, metallic "thunk" rather than the slightly apologetic click you get on many cheap folders. Nothing creaks when you rock the bars; the scooter feels like one welded piece rather than several aftermarket parts screwed together.
The Hiboy S2 isn't badly built for the money, but it does feel more "consumer electronics" than "light transport". The Xiaomi-inspired frame is proven and reasonably sturdy, yet you quickly notice little tells: more visible cabling, plastics that feel a bit harder and hollower, and hardware that demands a hex key every so often to keep the stem from developing that classic budget-scooter wobble. After a few months of use, the S2 has more audible rattles than the NIU at the same mileage.
On the plus side, the Hiboy's deck lighting and sleek, stealthy paint give it some visual drama the NIU lacks. But if you're judging purely by how "serious" and cohesive each scooter feels in the hand, the NIU quietly walks away with the point.
Ride Comfort & Handling
This is where the spec sheets lie to you a little.
The Hiboy S2 technically has suspension-dual springs at the rear-while the NIU KQi1 Pro has none at all. You'd expect the Hiboy to be much more comfortable. On glass-smooth bike paths, it kind of is: the springs take the sting out of the occasional curb cut, and the solid honeycomb tyres roll with very little squirm. For short, tidy commutes, it can feel pleasantly brisk and composed.
The illusion breaks the moment the road stops being perfect. Those solid tyres transmit a constant buzz through the deck and bars, and the rear springs really only wake up for bigger hits. On rough asphalt, your feet and wrists get a jarring, high-frequency vibration that makes you instinctively slow down. A few kilometres over patchy pavement and you're suddenly very aware of every gram of pressure in your joints.
The NIU approaches comfort from a different angle: no suspension, but decently sized pneumatic tyres and a more relaxed, wider stance. On outright big hits, you'll feel the lack of springs-the frame is stiff and you do need to bend your knees. Yet for everyday chatter, the air-filled tyres do a better job of smoothing out the endless small imperfections that make up most real city riding. Over long rides on mixed surfaces, the NIU feels less fatiguing, even though it's theoretically "less advanced".
Handling is also more confidence-inspiring on the NIU. The slightly wider handlebar gives you more leverage, and the chassis feels calmer at its limited top speed. On the Hiboy, once you're nudging its higher maximum, the narrow-ish bar and solid front tyre make the front end feel a bit nervous over anything but clean tarmac. It's not scary, just "don't sneeze while cornering over a manhole cover" territory.
Performance
If you want the faster scooter, this bit is easy: that's the Hiboy S2. Its front motor has noticeably more punch, especially off the line and up to its higher top speed. In Sport mode, it happily sprints away from the NIU and keeps pulling to a pace that feels borderline excessive for crowded bike paths. If you're coming from rental scooters and want something that feels like an upgrade, the S2 will scratch that itch.
Hill performance follows a similar script. On modest city inclines, both scooters will get you up without turning your commute into a workout, but the Hiboy holds speed better, especially with heavier riders. The NIU's higher-voltage system helps it feel perky for its modest rating, yet on sustained climbs you do end up watching the speed readout slowly bleed away while you silently promise to lose a few kilos.
Braking is more nuanced. The Hiboy's combination of regenerative front braking and rear disc gives it very strong stopping power. Grab a full handful and it digs its heels in; newcomers might find it a bit abrupt at first. Once you're used to it, you can haul the scooter down from its top speed with genuine confidence-as long as the surface is dry and grippy.
The NIU's drum plus regen setup feels more measured. You get a smooth, progressive deceleration that suits its gentler pace. Absolute stopping distance from its capped speed is perfectly adequate, but you never get that "anchor overboard" sensation the Hiboy can deliver in an emergency. On the flip side, the enclosed drum is far less fussy in bad weather and won't squeal or glaze as easily over time.
In short: Hiboy wins for thrills and shear pace, NIU for predictable, calm progress that never feels like it's trying to prove a point.
Battery & Range
Both scooters live solidly in the "commuter, not tourer" camp. Forget the brochure claims and think in terms of real-world city use.
In my testing and corroborated by plenty of owners, the Hiboy S2 will usually manage a real-world loop somewhere in the mid-teens of kilometres if you ride normally, a bit more if you baby it in the slower mode, a bit less if you pin it in Sport everywhere. That's genuinely usable for a lot of people: a few return trips to the supermarket, or a couple of work commutes with a desk charge in between.
The NIU KQi1 Pro, with its smaller battery, trails slightly behind. Ride it in its natural, full-legal mode, and you're looking at a comfortable city radius that's a touch shorter than the Hiboy's, though not dramatically. For last-mile duty or a straightforward there-and-back commute, it's fine; for days where you do a morning commute, lunch run, and an evening detour to a friend's place, you start glancing at the battery bars more often.
Where the NIU claws something back is power consistency. Thanks to its higher voltage system and mature battery management, it holds its modest performance more evenly as the charge drops. Many 36 V budget scooters-including the Hiboy-start to feel a bit flatter and less eager once the battery dips below half, especially in cold weather. The NIU just quietly keeps doing its thing until you're genuinely near empty.
Charging times flip the script again. The Hiboy sips from the wall more quickly, meaning a proper empty-to-full during a work shift is entirely realistic. The NIU takes longer than you'd expect for its battery size, which is kinder to the cells but slightly less convenient if you're trying to squeeze two full-range outings into a single day.
Portability & Practicality
Both scooters sit in that manageable mid-teens weight class: not "throw it over your shoulder and sprint up four floors" light, but absolutely doable for an average adult up a staircase or onto a train. In hand, the Hiboy feels a hair easier to wrangle, mostly due to its shape and slightly lower mass, but the difference isn't night and day.
The NIU's folding mechanism is the more polished of the two. The latch is well-shaped, engages positively, and once locked there's minimal play in the stem. Folding and unfolding is a quick, single-movement affair that feels like it was tested by someone who actually commutes. When folded, it forms a compact, tidy package that sits neatly under a desk without snagging rogue cables.
The Hiboy's latch works, but it's very stiff when new, and over time the front end has more of a tendency to loosen slightly, demanding periodic tweaks. It still folds into a reasonably compact triangle and is fine for public transport, yet you're more conscious of the hinge as a wear item you'll have to keep on top of.
Both scooters offer app-based locking that adds resistance to the motor when "locked". Neither replaces a good physical lock, but they'll at least slow down the casual "walk away with it" thief while you're grabbing a coffee. The NIU app feels a bit more polished and integrated; the Hiboy's is more utilitarian but gets the job done.
Safety
Safety is one of the big dividing lines between these two-and not for the reasons the spec sheets shout about.
Brakes first: as mentioned, the Hiboy's dual system is powerful and can genuinely save your bacon in a panic stop, provided the grip is there. The NIU's combination of front drum and regen feels more conservative but is very consistent in all weathers and demands less maintenance. In the dry at commuter speeds, both are absolutely serviceable.
Where the NIU quietly takes a lead is tyres. Those 9-inch pneumatic tyres give you a more forgiving contact patch, especially in the wet. Painted lines, tram tracks, damp cobbles-you still have to respect them, but the scooter talks to you early and predictably. You can lean with more confidence and recover more easily from minor slips.
The Hiboy's 8,5-inch solid honeycombs are a different story. On dry tarmac, they're fine if a bit skittish on rougher patches. Add rain, polished stone, or metal covers, and they become something you consciously manage every second. The scooter itself stays stable, but the available grip drops off far more sharply, and you learn to ride like every wet zebra crossing is out to get you.
Lighting is one of Hiboy's stronger cards: the extra side/deck illumination creates a bigger "light footprint" and makes you very visible at night. The NIU counters with a more automotive-style headlight that actually throws a decent beam on the road; its overall visibility package is mature and thought through, even if it's a bit less nightclub-on-wheels than the S2.
Add in UL certification and NIU's more conservative speed, and the KQi1 Pro comes across as the more inherently safe choice, especially for newer riders or wet-climate cities. The Hiboy can be ridden safely, but it asks more of the rider's judgement and conditions awareness.
Community Feedback
| NIU KQi1 Pro | HIBOY S2 |
|---|---|
What riders love
|
What riders love
|
What riders complain about
|
What riders complain about
|
Price & Value
This is the Hiboy's home turf. It simply costs less. For riders on a strict budget who still want a scooter that feels decently quick and modern, the value proposition is undeniably strong. You get higher speed, slightly better range, rear suspension, a dual brake setup and app features for the price of some mid-tier bicycle components.
The NIU asks for a noticeable premium while offering less headline performance. That can be a hard sell if you only look at the charging-port end of the equation. Where the NIU's value starts to make more sense is over time: fewer nervous moments in the wet, a more mature support network, better-feeling hardware, and a brand with proper EV experience and robust warranties. Amortised over a few years of daily use, that premium doesn't look quite so extravagant.
But if your budget line is hard and low, the Hiboy S2 is the one that will actually fit underneath it, and that matters. You just need to be honest with yourself about the compromises that come with that sticker price.
Service & Parts Availability
NIU plays in the grown-up end of the market: established European distribution, physical dealers in many cities, and a track record in electric mopeds that forces them to care about after-sales support. That translates into easier access to official parts, reasonably structured warranty channels, and a decent chance that someone local has actually been trained to open your scooter without bricking it.
Hiboy lives primarily online. To their credit, they are generally responsive-there are plenty of stories of replacement throttles, chargers, or fenders shipped out without too much drama. But you're dealing with remote support, shipping delays, and a network of third-party spares that can be a bit of a treasure hunt. If you're mechanically inclined and comfortable doing your own tinkering, that's workable. If you want a plug-and-play relationship where someone else handles the dirty work, NIU is the safer bet.
Pros & Cons Summary
| NIU KQi1 Pro | HIBOY S2 |
|---|---|
Pros
|
Pros
|
Cons
|
Cons
|
Parameters Comparison
| Parameter | NIU KQi1 Pro | HIBOY S2 |
|---|---|---|
| Motor power (nominal) | 250 W rear hub | 350 W front hub |
| Top speed | 25 km/h | 30 km/h |
| Claimed range | 25 km | 27 km |
| Real-world range (approx.) | 15-18 km | 16-20 km |
| Battery | 48 V 243 Wh | 36 V 270 Wh |
| Charging time | 5-6 h | 3-5 h |
| Weight | 15,4 kg | 14,5 kg |
| Brakes | Front drum + rear regen | Front e-brake + rear disc |
| Suspension | None | Dual rear springs |
| Tyres | 9-inch pneumatic (tubed) | 8,5-inch solid honeycomb |
| Max load | 100 kg | 100 kg |
| Water resistance | IP54 | IPX4 |
| Approx. price | 420 € | 256 € |
Final Verdict - Which Should You Choose?
If your only question is "what goes faster for less money?", the Hiboy S2 is your answer. It's quicker, a touch longer-legged, lighter on the wallet, and crams in a surprising amount of tech for its price. For a student blasting around a mostly smooth campus in decent weather, or a light rider doing short, predictable city hops, it can be a lot of fun and a huge upgrade over rental fleets-provided you accept the firmer ride and keep it out of heavy rain whenever possible.
If, however, you're thinking longer term and care more about how confident you feel on bad days than how fast you go on good ones, the NIU KQi1 Pro makes the stronger case. Its combination of pneumatic tyres, calmer handling, better-sorted chassis and more mature brand ecosystem adds up to a scooter that feels more like sensible transport and less like a clever toy. Yes, you give up some speed and range, and the lack of suspension means rough surfaces are still rough-but the whole package inspires more trust, and that matters more than an extra five kilometres per hour when you're threading through traffic in drizzle.
So: Hiboy S2 if your priority is maximum bang for minimum buck and you're riding mostly on smooth, dry ground. NIU KQi1 Pro if you want a slightly more grown-up, confidence-inspiring machine from a brand that behaves like the scooter is more than just a seasonal gadget. Personally, if I had to choose one as my daily "don't think about it, just ride" commuter, I'd live with the NIU's limitations and enjoy the extra peace of mind.
Numbers Freaks Corner
| Metric | NIU KQi1 Pro | HIBOY S2 |
|---|---|---|
| Price per Wh (€/Wh) | ❌ 1,73 €/Wh | ✅ 0,95 €/Wh |
| Price per km/h of top speed (€/km/h) | ❌ 16,80 €/km/h | ✅ 8,53 €/km/h |
| Weight per Wh (g/Wh) | ❌ 63,37 g/Wh | ✅ 53,70 g/Wh |
| Weight per km/h (kg/km/h) | ❌ 0,62 kg/km/h | ✅ 0,48 kg/km/h |
| Price per km of real-world range (€/km) | ❌ 25,45 €/km | ✅ 14,22 €/km |
| Weight per km of real-world range (kg/km) | ❌ 0,93 kg/km | ✅ 0,81 kg/km |
| Wh per km efficiency (Wh/km) | ✅ 14,73 Wh/km | ❌ 15,00 Wh/km |
| Power to max speed ratio (W/km/h) | ❌ 10,00 W/km/h | ✅ 11,67 W/km/h |
| Weight to power ratio (kg/W) | ❌ 0,0616 kg/W | ✅ 0,0414 kg/W |
| Average charging speed (W) | ❌ 44,18 W | ✅ 67,50 W |
These metrics strip out emotion and look only at how efficiently each scooter converts euros, kilograms, watts and watt-hours into speed and range. Lower values mean you get more performance or range per unit of money or weight, while higher values on the "power per speed" and "charging speed" rows mean the scooter has more punch relative to its top speed, or fills its battery faster. They're useful for comparing cold efficiency-but don't account for handling, safety, or how much you actually enjoy riding the thing.
Author's Category Battle
| Category | NIU KQi1 Pro | HIBOY S2 |
|---|---|---|
| Weight | ❌ Slightly heavier to carry | ✅ A bit lighter overall |
| Range | ❌ Shorter realistic distance | ✅ Goes a touch further |
| Max Speed | ❌ Capped at legal pace | ✅ Noticeably faster cruising |
| Power | ❌ Modest, adequate motor | ✅ Stronger everyday pull |
| Battery Size | ❌ Smaller capacity pack | ✅ Larger usable capacity |
| Suspension | ❌ No suspension at all | ✅ Rear springs do help |
| Design | ✅ Cleaner, more cohesive look | ❌ More generic, derivative |
| Safety | ✅ Better tyres, calmer speed | ❌ Solid tyres, wet grip worse |
| Practicality | ✅ More solid, stress-free use | ❌ More fiddly hinge, quirks |
| Comfort | ✅ Air tyres tame vibrations | ❌ Harsh solid-tyre chatter |
| Features | ❌ Plainer spec sheet | ✅ More toys and modes |
| Serviceability | ✅ Better formal support paths | ❌ More DIY, online only |
| Customer Support | ✅ Stronger brand-backed network | ❌ Decent but more limited |
| Fun Factor | ❌ Sensible, not exciting | ✅ Quicker, more playful feel |
| Build Quality | ✅ Feels like real transport | ❌ More budget, more rattles |
| Component Quality | ✅ Better finishing overall | ❌ Cheaper hardware evident |
| Brand Name | ✅ Established EV manufacturer | ❌ Budget online specialist |
| Community | ✅ Mature NIU user base | ✅ Large, active Hiboy crowd |
| Lights (visibility) | ❌ Less dramatic side presence | ✅ Side LEDs boost profile |
| Lights (illumination) | ✅ Strong, moped-style beam | ❌ Bright but less focused |
| Acceleration | ❌ Gentle, unhurried launch | ✅ Sharper, quicker starts |
| Arrive with smile factor | ❌ Competent, not thrilling | ✅ Speed and punch entertain |
| Arrive relaxed factor | ✅ Calm, confidence-inspiring | ❌ Harsher, more demanding |
| Charging speed | ❌ Slower to refill | ✅ Noticeably quicker charge |
| Reliability | ✅ Track record, fewer quirks | ❌ More reports of issues |
| Folded practicality | ✅ Compact, solid when folded | ❌ Latch stiffness, play risk |
| Ease of transport | ❌ Slightly bulkier feel | ✅ Marginally easier to lug |
| Handling | ✅ Stable, predictable steering | ❌ Twitchier at higher speed |
| Braking performance | ❌ Adequate, not aggressive | ✅ Strong, decisive stopping |
| Riding position | ✅ Wide deck, relaxed stance | ❌ Narrower, less forgiving |
| Handlebar quality | ✅ Wider, more confidence | ❌ Narrower, more flexy |
| Throttle response | ✅ Smooth, predictable curve | ❌ Sharper, less refined |
| Dashboard/Display | ✅ Clean, well-integrated | ❌ Functional but basic |
| Security (locking) | ✅ Solid app, brand ecosystem | ❌ App lock but simpler |
| Weather protection | ✅ Tyres, IP rating reassuring | ❌ Tyres sketchy in rain |
| Resale value | ✅ Stronger brand desirability | ❌ Budget image hurts resale |
| Tuning potential | ❌ Less modding community | ✅ More hacks, firmware mods |
| Ease of maintenance | ✅ Fewer flats, solid drum | ❌ More hinge, fender fuss |
| Value for Money | ❌ Good, but costs more | ✅ Extremely strong for price |
Overall Winner Declaration
In the Numbers Freaks Corner, the NIU KQi1 Pro scores 1 point against the HIBOY S2's 9. In the Author's Category Battle, the NIU KQi1 Pro gets 23 ✅ versus 17 ✅ for HIBOY S2.
Totals: NIU KQi1 Pro scores 24, HIBOY S2 scores 26.
Based on the scoring, the HIBOY S2 is our overall winner. In day-to-day riding, the NIU KQi1 Pro simply feels like the more sorted partner: calmer under your feet, more trustworthy when the weather or road surface stops being Instagram-friendly, and backed by a company that treats it as a real vehicle rather than a seasonal gadget. The Hiboy S2 fights back hard with speed, features and a temptingly low price, and for the right rider on the right roads it can be a genuinely fun and liberating little machine. But if you're buying a scooter to rely on, not just to play with, the NIU's more composed manners and mature underpinnings make it the one I'd rather live with when the novelty wears off and the commuting grind begins.
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.

