Fast Answer for Busy Riders ⚡ (TL;DR)
The SOFLOW SO ONE+ takes the overall win as a more rounded, grown-up commuter: stronger motor, calmer handling, better safety package and lighting, and a genuinely more confidence-inspiring ride - especially if your city has hills, wet roads or grumpy taxi drivers.
The KUGOO KuKirin S1 Max fights back hard on one thing: price. If your budget is tight, your roads are mostly smooth and flat, and you care more about low purchase cost and puncture-proof tyres than premium feel, it will do the job.
Pick the SO ONE+ if you want something that feels like a small vehicle. Pick the S1 Max if you just need a cheap tool to kill the last few kilometres of your commute.
If you want to understand where each scooter really shines - and where the marketing fluff starts to crack - read on.
Urban commuters today are spoiled for choice: dozens of mid-range scooters promise to replace your bus pass, your bike, and possibly your gym membership. The SOFLOW SO ONE+ and the KUGOO KuKirin S1 Max both claim to be that magic "everyday machine", but they come at the problem from very different angles.
I've spent a good chunk of kilometres on both - dragging them through station staircases, bouncing over European pavements, and discovering which one I actually trust in busy traffic. One of them feels like a thoughtful, if imperfect, commuter tool. The other feels like a very inexpensive answer to a very specific question: "What's the cheapest way I can stop walking?"
They're often cross-shopped, they sit in overlapping price brackets, and on paper they don't look that far apart. On the road, though, the gap feels a lot bigger. Let's dive in.
Who Are These For, and Why Compare Them?
Both scooters live in the "affordable commuter" world, but they sit on different rungs of that ladder.
The SOFLOW SO ONE+ aims at the rider who wants a proper daily vehicle: legal in strict countries, strong torque for hills, real lighting, app integration, and a generally more serious feel. It's the scooter for someone who might actually sell their second car or ditch public transport, not just shorten a walk.
The KuKirin S1 Max is much more of a budget, last-mile mule. It's lighter, cheaper, and built for short, mostly flat city trips. Think student hopping across campus, or someone connecting a train station to the office. It's the scooter you buy because it's affordable and easy, not because you fell in love with it.
They compete because a lot of buyers sit exactly on that fence: spend a bit more for a "real" machine, or save money and accept compromises. This comparison is essentially that decision in scooter form.
Design & Build Quality
Put them side by side and the design philosophies are obvious within seconds.
The SO ONE+ looks and feels like a modern, road-legal commuter. The "Smarthead" front with integrated display and light is tidy and cohesive, cables are tucked away, and the overall silhouette wouldn't look out of place parked next to mid-range e-bikes in Zurich. The steel-heavy chassis gives it a slightly heavier, more planted feel in the hands - not exactly elegant to carry, but reassuring when you stomp on the deck.
The KuKirin S1 Max, by contrast, is unapologetically utilitarian. Aluminium frame, visible joints, orange accents and a very "budget scooter" stance. Nothing looks terrible, but nothing looks particularly premium either. The display and controls are functional rather than pretty; it feels like a tool more than a product designers have agonised over. That's not a crime at this price, but you can see where costs have been shaved.
In the hand, the SO ONE+ feels denser and more solid; the latch and stem have a reassuring lack of play if you secure them firmly. The S1 Max is lighter and easier to swing around, but its folding joint and narrower stem do develop a hint of wobble sooner if you don't keep an eye on bolts. Out of the box, both are acceptable; long term, the SoFlow chassis simply feels less "disposable".
Ride Comfort & Handling
This is where their personalities really split.
The SO ONE+ rolls on air-filled tyres of decent diameter with no real suspension hardware to speak of - but those tyres do a lot of silent work. On typical city tarmac, it glides with just enough give to take the sting out of expansion joints, tram tracks (taken sensibly), and the usual small sins of municipal road maintenance. After a fifteen-kilometre day, my knees and wrists still feel civilised.
On the S1 Max, comfort is very much a negotiated truce. You get solid honeycomb tyres paired with basic front and rear suspension. That combo saves you from outright punishment, but you still feel more of the texture of the road - every seam, cobble and badly done patch job taps you on the ankles to say hello. Over smooth bike lanes it's fine and firm. The moment you wander onto broken pavement, you remember why pneumatic tyres became a thing in the first place.
Handling-wise, the SO ONE+ is calmer and more stable. Wider, grippier tyres and a slightly more substantial frame give it a confidence at its modest legal top speed that makes one-handed signalling and quick lane changes feel controlled rather than edgy. The S1 Max is nimble, even a bit twitchy: narrow handlebars, smaller wheels and those hard tyres mean that at full speed you're paying attention. Hit a pothole you didn't see? You'll feel it in your teeth and your steering.
If your city is mostly billiard-smooth bike lanes, the S1 Max is tolerable. If you have old pavements, cobbles or patched asphalt, the SO ONE+ is clearly the kinder daily companion.
Performance
The spec sheets tell one story; your wrists tell another.
The SO ONE+ runs a higher-voltage system with a motor that can deliver serious peak punch for a commuter-class scooter. Off the line, it pulls decisively - not like a drag scooter, but with that "small motorcycle pretending to be legal" kind of shove. You're up to the limited top speed quickly, and what really matters is that it keeps that speed on gentle climbs and into headwinds without visibly giving up. In traffic, that consistency matters more than outright numbers.
Hill climbing is where the SoFlow earns its keep. Steeper city ramps and longer bridges that make many 36 V scooters sag into embarrassment are handled with a steady, determined push. Heavier riders don't shoot up like rockets, but they don't end up kicking their way to the top either. It feels like the scooter was built by people who have actually ridden in hilly cities.
The KuKirin S1 Max, with its more modest motor, feels exactly like what it is: a lightweight, regulation-friendly commuter. Acceleration is gentle and predictable, perfectly fine for bike lanes and mixed pedestrian areas but not exactly thrilling. Once it reaches its legal top speed, it sits there willingly enough on flats. Hit a steeper incline or load it with a heavier rider and you feel the motor working hard - sometimes a little too hard - to maintain pace. On shorter city slopes it manages; on real hills it becomes a "kick-assisted" scooter.
Braking also separates them. The SO ONE+ pairs a front drum with rear electronic braking. The feel is progressive, with good modulation and no sharp surprises. Emergency stops feel controlled: you can load the front slightly, dig in, and the scooter stays composed. On the S1 Max, you rely on electronic braking up front and a foot brake over the rear wheel for real stopping. Once you're used to it, it's workable, but it demands more rider skill and planning - and panic-stopping with a foot on the mudguard isn't everyone's idea of modern braking technology.
Battery & Range
Both scooters live in the same broad "commuter day" range band, but they get there differently.
The SO ONE+ uses a higher-voltage pack with moderate capacity. In practice, ridden like a normal adult - full legal speed, some hills, stop-and-go - you're looking at a comfortable commute plus errands range, without constantly staring at the battery icon. The nice surprise is how little the performance drops as the charge depletes: it keeps its punch reasonably well until the last stretch. More importantly, it charges fast by class standards. Plug it under your desk in the morning and you can realistically leave with a full battery by early afternoon. That changes how relaxed you feel about using it heavily in a single day.
The S1 Max packs a slightly larger nominal battery in a lower-voltage system and stretches it by being lighter and a bit less powerful. Real-world riding in the higher speed mode gives very similar end distances: plenty for a typical there-and-back commute and a detour. Where it lags is convenience: a full charge is basically an overnight affair. If you arrive at work half empty, you're unlikely to be completely topped up before you head home unless you sit in the office for a very long time.
In terms of efficiency, both do reasonably well for what they are. The S1 Max sips power gently but also rides on tyres that roll with low hysteresis, while the SO ONE+ is pushing more motor and better acceleration through grippier rubber. On a spreadsheet they trade blows; on the street, the bigger differentiator is charging speed and how much you value your lunch-break plug-in.
Portability & Practicality
On paper, their weights are close. In the real world, they feel surprisingly different when you actually lug them around.
The KuKirin S1 Max is clearly the easier one to live with if you're regularly carrying it. Its lighter aluminium chassis and compact fold turn it into a package that you can haul up a couple of floors or fling into the boot of a small car without inventing new swear words. The one-key folding mechanism is quick, and once you develop the habit of locking it fully, it behaves well on trains and in crowded lifts.
The SO ONE+ is still portable, but it's more "take it on the train, maybe up one flight of stairs" than "third-floor walk-up every day". The steel frame gives it that extra heft you feel each time you lift it by the stem. The fold is simple and fairly quick, but you do need to be deliberate when securing the latch to avoid any stem wobble. Under a desk or in a hallway it doesn't take much more space than the KuKirin; it's the moments when it's in your hands, not on the ground, that you notice the difference.
For mixed public transport commuters and those in buildings without lifts, the S1 Max has the edge. For people who roll from garage to lift to office with only short carrying sections, the SO ONE+'s extra solidity on the road is probably worth the minor penalty.
Safety
This is where "cheap" and "good enough" start to diverge quite a bit.
The SO ONE+ is one of the few scooters in its price band that feels like someone sat down and wrote "visibility" in big letters at the top of the brief. The integrated headlight actually illuminates the road, not just your front tyre. Side visibility is genuinely improved by those reflective tyre strips that light up like twin halos in car headlights. Add handlebar indicators and you suddenly feel far less invisible at junctions and in busy cycling lanes. Throw in a robust drum front brake, and the safety package is... well, surprisingly grown-up.
The S1 Max has the basic boxes ticked: a serviceable front light, a rear light, and brakes that meet its intended speeds - as long as the rider knows what they're doing. But the combination of solid, small tyres and a less confidence-inspiring braking layout means you have less grip to work with when something unexpected happens. On dry, clean tarmac it's fine; in the wet or on dirt-strewn lanes, you just don't have the same margin for error.
Stability at speed is also in the SO ONE+'s favour. The bigger, air-filled tyres simply offer more grip and cushioning when you need to swerve or brake over imperfect surfaces. With the S1 Max, you ride with a little more mental buffer: you're constantly scanning for things that might unstick a small, hard front wheel at speed.
Community Feedback
| SOFLOW SO ONE+ | KUGOO KuKirin S1 Max |
|---|---|
What riders love
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What riders love
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What riders complain about
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What riders complain about
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Price & Value
On sticker price alone, the S1 Max looks like an easy decision. It undercuts the SO ONE+ quite noticeably, and for that money you do get a real, useable daily scooter with decent range and minimal maintenance. If your budget ceiling is hard and low, it's a serviceable, even sensible choice.
But value isn't just about the price tag; it's about what you actually get per euro over the years you own the thing. The SO ONE+ gives you far better lighting, better tyres, stronger motor performance, legal certification in tougher markets, and a more robust braking setup. It also fast-charges, which is effectively a feature upgrade the S1 Max cannot match. On those fronts, per euro, the SoFlow can make a compelling case - if you can live with the brand's hit-and-miss after-sales experience.
The S1 Max, meanwhile, trades refinement and capability for low upfront cost and minimal tyre maintenance. It's not bad value; it's just clearly optimised for a different buyer: one who cares more about the entry price than about long-term polish.
Service & Parts Availability
Neither brand is perfect in this department, but the problems are different.
SoFlow has a growing reputation for sluggish, sometimes exasperating customer service. Getting specific parts - especially rear tyre tubes - can feel like a small quest. When the scooter is running, life is good; when you need official support, your patience gets a workout. On the upside, the hardware itself is fairly standard, so a competent local shop can handle a lot of tasks if you're willing to go unofficial.
KUGOO/KuKirin benefits from a wide distribution network and a very active community. Spare parts and third-party bits are relatively easy to find, and there are plenty of tutorials floating around. Official support quality varies by reseller, but at this price point nobody expects concierge service. The S1 Max's puncture-proof tyres remove one of the biggest maintenance headaches entirely, which is half the reason many people buy it.
If you want structured, brand-backed service, neither will give you the experience of a big-name e-bike manufacturer. If you're comfortable being a bit self-reliant, both are manageable, with KuKirin having the slight edge in community-driven support, and SoFlow offering a more complex but less frequently puncture-free machine that occasionally needs chasing for parts.
Pros & Cons Summary
| SOFLOW SO ONE+ | KUGOO KuKirin S1 Max |
|---|---|
Pros
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Pros
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Cons
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Cons
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Parameters Comparison
| Parameter | SOFLOW SO ONE+ | KUGOO KuKirin S1 Max |
|---|---|---|
| Motor nominal power | 500 W | 350 W |
| Motor peak power | 1.000 W | n/a (approx. 500-600 W) |
| Top speed | 20-22 km/h (region-limited) | 25 km/h |
| Claimed range | 40 km | 39 km |
| Real-world range (approx.) | 25-30 km | 25-30 km |
| Battery | 48 V 7,8 Ah (≈ 374 Wh) | 36 V 10,4 Ah (≈ 374 Wh) |
| Weight | 17 kg | 16 kg |
| Brakes | Front drum + rear electronic | Front electronic + rear foot |
| Suspension | Pneumatic tyres, no springs | Front shock + rear spring |
| Tyres | 9" pneumatic with reflectors | 8" honeycomb solid |
| Max load | 120 kg | 100 kg |
| Water resistance | IPX5 | IP54 |
| Typical price | ≈ 476 € | ≈ 299 € |
Final Verdict - Which Should You Choose?
If I had to live with one of these as my daily commuter, it would be the SOFLOW SO ONE+. It's not flawless, and you may end up muttering about parts and support at some point, but when you're actually riding, it feels more like a legitimate vehicle: better braking, better grip, far better lighting, stronger motor and a calmer, more confidence-inspiring ride on real-world roads. It's the scooter I'm happier to throw into morning traffic and night rides alike.
The KuKirin S1 Max has its place. If your commute is short, flat, mostly smooth, you hate punctures with a passion and your wallet is doing the talking, it's a reasonable, low-commitment way into e-scooters. Treat it as a budget workhorse and it will serve you fine, as long as you accept the firmer ride, slower charging and more basic safety package.
So: if you want something that feels like a "proper" commuter machine and can stretch your budget a bit, go for the SO ONE+. If you just need a cheap, foldable alternative to walking that you won't cry over if it gets scratched, the S1 Max will quietly get on with the job.
Numbers Freaks Corner
| Metric | SOFLOW SO ONE+ | KUGOO KuKirin S1 Max |
|---|---|---|
| Price per Wh (€/Wh) | ❌ 1,27 €/Wh | ✅ 0,80 €/Wh |
| Price per km/h of top speed (€/km/h) | ❌ 21,64 €/km/h | ✅ 11,96 €/km/h |
| Weight per Wh (g/Wh) | ❌ 45,45 g/Wh | ✅ 42,78 g/Wh |
| Weight per km/h (kg/km/h) | ❌ 0,77 kg/km/h | ✅ 0,64 kg/km/h |
| Price per km of real-world range (€/km) | ❌ 17,63 €/km | ✅ 11,07 €/km |
| Weight per km of real-world range (kg/km) | ❌ 0,63 kg/km | ✅ 0,59 kg/km |
| Wh per km efficiency (Wh/km) | ✅ 13,85 Wh/km | ✅ 13,85 Wh/km |
| Power to max speed ratio (W/km/h) | ✅ 22,73 W/km/h | ❌ 14,00 W/km/h |
| Weight to power ratio (kg/W) | ✅ 0,034 kg/W | ❌ 0,0457 kg/W |
| Average charging speed (W) | ✅ 106,86 W | ❌ 49,87 W |
These metrics isolate pure maths: how much you pay per unit of energy or speed, how heavy each scooter is relative to its power and range, and how quickly the battery fills. The KuKirin S1 Max is clearly the better deal in terms of euros and grams per unit of performance, while the SO ONE+ delivers more muscle per kilometre of speed, better weight-to-power, and much faster charging. The equal efficiency score shows that, energy-wise, both are similarly frugal in typical use.
Author's Category Battle
| Category | SOFLOW SO ONE+ | KUGOO KuKirin S1 Max |
|---|---|---|
| Weight | ❌ Slightly heavier overall | ✅ Easier to carry upstairs |
| Range | ✅ Strong, stable range feel | ❌ Similar but less robust |
| Max Speed | ❌ Legally capped lower | ✅ Slightly faster cruising |
| Power | ✅ Noticeably stronger motor | ❌ Adequate but modest |
| Battery Size | ✅ Higher voltage advantage | ❌ Similar Wh, lower punch |
| Suspension | ❌ Tyres only, no springs | ✅ Basic but present both ends |
| Design | ✅ Cleaner, more refined look | ❌ Very utilitarian styling |
| Safety | ✅ Better brakes and grip | ❌ Brakes and tyres compromise |
| Practicality | ✅ Better in bad weather | ✅ Better for frequent carrying |
| Comfort | ✅ Softer, calmer ride | ❌ Harsher on rough surfaces |
| Features | ✅ Lights, indicators, tracking | ❌ Very basic equipment |
| Serviceability | ❌ Flats and parts annoyance | ✅ Solid tyres, easy upkeep |
| Customer Support | ❌ Slow, often frustrating | ✅ Wider parts, better logistics |
| Fun Factor | ✅ Punchy, engaging within limits | ❌ Functional rather than fun |
| Build Quality | ✅ Feels sturdier, more solid | ❌ More flex and wobble |
| Component Quality | ✅ Better tyres, lighting bits | ❌ Cheaper controls and display |
| Brand Name | ✅ Strong DACH commuter presence | ✅ Widely known budget brand |
| Community | ❌ Smaller, less tutorial content | ✅ Huge user base, guides |
| Lights (visibility) | ✅ Excellent, side reflective | ❌ Basic, nothing special |
| Lights (illumination) | ✅ Proper road illumination | ❌ Adequate but weaker |
| Acceleration | ✅ Zippy, confident starts | ❌ Gentle, a bit dull |
| Arrive with smile factor | ✅ Feels like a small vehicle | ❌ More appliance than toy |
| Arrive relaxed factor | ✅ Smoother, less fatiguing | ❌ More vibration, more effort |
| Charging speed | ✅ Very quick turnaround | ❌ Strictly overnight job |
| Reliability | ❌ Flats and error codes | ✅ Simple, fewer weak points |
| Folded practicality | ✅ Tidy, slim footprint | ✅ Very compact and light |
| Ease of transport | ❌ Heavier on stairs | ✅ Friendlier for multi-modal |
| Handling | ✅ Stable, confidence inspiring | ❌ Twitchier on small wheels |
| Braking performance | ✅ Drum plus strong e-brake | ❌ Foot brake limits control |
| Riding position | ✅ Comfortable for most adults | ❌ Compact, tall riders cramped |
| Handlebar quality | ✅ Solid, nice integration | ❌ Narrow, more flex |
| Throttle response | ✅ Immediate but controlled | ❌ Slight delay from stop |
| Dashboard / Display | ✅ Clear, colourful, readable | ❌ Dimmer, basic interface |
| Security (locking) | ✅ Find My plus app lock | ❌ No integrated anti-theft |
| Weather protection | ✅ Better water resistance | ❌ More cautious in rain |
| Resale value | ✅ Higher, more desirable spec | ❌ Budget category depreciation |
| Tuning potential | ❌ Legal limits, closed system | ✅ Mod-friendly budget platform |
| Ease of maintenance | ❌ Tyre changes, parts sourcing | ✅ No flats, simple mechanics |
| Value for Money | ✅ Strong spec for price | ✅ Extremely cheap mobility |
Overall Winner Declaration
In the Numbers Freaks Corner, the SOFLOW SO ONE+ scores 4 points against the KUGOO KuKirin S1 Max's 7. In the Author's Category Battle, the SOFLOW SO ONE+ gets 29 ✅ versus 14 ✅ for KUGOO KuKirin S1 Max (with a few ties sprinkled in).
Totals: SOFLOW SO ONE+ scores 33, KUGOO KuKirin S1 Max scores 21.
Based on the scoring, the SOFLOW SO ONE+ is our overall winner. Between these two, the SOFLOW SO ONE+ simply feels like the more complete daily partner: safer, more composed, and closer to a "real vehicle" than a gadget. It may occasionally test your patience when you need parts, but on the road it rewards you with a calmer, more confident ride that you can actually enjoy. The KuKirin S1 Max earns respect on price and brutal simplicity, but it always feels like a compromise you make to save money, not a machine you grow attached to. If you can afford to stretch, the SO ONE+ is the scooter you're more likely to still be happy riding a couple of years down the line.
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.

