Inmotion Air vs Hiboy KS4 Pro - Which "Budget Hero" Actually Deserves Your Commute?

INMOTION AIR 🏆 Winner
INMOTION

AIR

553 € View full specs →
VS
HIBOY KS4 Pro
HIBOY

KS4 Pro

355 € View full specs →
Parameter INMOTION AIR HIBOY KS4 Pro
Price 553 € 355 €
🏎 Top Speed 25 km/h 30 km/h
🔋 Range 35 km 30 km
Weight 15.6 kg 17.5 kg
Power 1224 W 750 W
🔌 Voltage 36 V 36 V
🔋 Battery 280 Wh 417 Wh
Wheel Size 10 " 10 "
👤 Max Load 120 kg 100 kg
Speed Comparison

Fast Answer for Busy Riders ⚡ (TL;DR)

The Hiboy KS4 Pro wins on paper: it's cheaper, faster, more powerful and goes noticeably further on a charge. If you want maximum shove and range for minimum money, and your roads aren't awful, it's the more compelling choice.

The Inmotion Air suits riders who care more about refinement, clean design and low-hassle ownership than headline numbers. It rides more smoothly on typical city tarmac, feels better screwed together, and is kinder to nervous or first-time riders.

Pick the KS4 Pro if you're budget-focused and want extra speed and range; pick the Air if you want something that simply feels better engineered and easier to live with long-term.

Now let's dig into how they really stack up when you're not just looking at a spec sheet.

Electric scooters have matured to the point where "cheap and cheerful" is no longer enough. Commuters want something that doesn't rattle itself to pieces in six months and doesn't leave them stranded halfway home. The Inmotion Air and Hiboy KS4 Pro both aim squarely at that everyday rider: sensible money, city speeds, and just enough range to make public transport optional.

On one side you've got the Inmotion Air, the minimalist, clean-cut commuter that looks like it was designed by someone who actually met a cable tie once and said "never again". It's for the rider who values polish and predictability over bravado. On the other side stands the Hiboy KS4 Pro, a spec-heavy workhorse promising more power, more range and rear suspension at a price that undercuts half the market.

They're close enough in purpose that many shoppers will be choosing between exactly these two. The details - and a few very real compromises - are where the decision is made. Let's get into it.

Who Are These For, and Why Compare Them?

INMOTION AIRHIBOY KS4 Pro

Both scooters live in that "serious but still affordable" commuter zone: not toy-level, not performance monsters. Think urban riders doing anything from a couple of kilometres to a decent cross-town commute, mostly on bike lanes and city streets.

The Inmotion Air is the tidier, more conservative option. It's lighter, visually sleeker and tuned for calm, predictable riding. Ideal for office workers, students and anyone hopping on and off trains or stairs regularly.

The Hiboy KS4 Pro leans harder into value and grunt: more motor, more battery, rear suspension and a lower price tag. It targets riders who look at basic 350 W commuters and think "nice, but I need a bit more punch and range - without obliterating my bank account".

They're direct competitors because they promise the same thing - practical daily transport - but they approach it very differently: the Air from the "refined light commuter" side, the KS4 Pro from the "specs-for-money" side.

Design & Build Quality

Specs Comparison

Pick up the Inmotion Air and the first thing you notice is how clean it looks. Cables are tucked away inside the stem and frame, the finish is understated, and nothing screams "budget gadget". It feels like one coherent product rather than a collection of parts bolted together in a hurry. The stem is reassuringly solid, and after many kilometres, rattles are minimal if you keep basic maintenance in check.

The Hiboy KS4 Pro, by contrast, goes for a tougher, more utilitarian look. Matte black, a bit more visible cabling, and a frame that feels chunkier in the hands. It doesn't look bad - far from it - but it feels more "cost-optimised commuter" than "minimalist industrial design". Screws and joints benefit from an early tightening session, and you do get the sense Hiboy has saved a bit of money in some components to cram in that bigger motor and battery at the price.

On pure polish and design integration, the Air has the edge. Its cockpit is simple and tidy, the display is clear enough, and everything feels thought through. The KS4 Pro's display is larger and more feature-rich, but the plastics and general finish feel a step down, even though it looks reasonably modern from a distance. If you're sensitive to build nuance, you'll feel the difference when you start living with them.

Ride Comfort & Handling

This is where their philosophies properly diverge - and where spec sheets can be misleading.

The Inmotion Air skips suspension entirely and relies on big air-filled tyres to do the work. On typical city tarmac and decent bike paths, it actually feels surprisingly plush for a non-suspended scooter. It glides over small cracks, manhole covers and paving joints with a soft "thud" rather than a sharp smack. After several kilometres, your knees and wrists still feel civilised. Hit rough cobblestones, though, and you'll be reminded there are no springs underneath - you become the suspension. It's manageable, but you won't mistake it for a touring machine.

The Hiboy KS4 Pro takes the opposite approach: solid honeycomb tyres plus a rear shock. The promise is "no flats, some comfort". On very smooth surfaces, the ride is fine - planted and predictable. The moment the asphalt degrades, however, those solid tyres start sending every rattle straight into your hands and feet. The rear shock does help with bigger bumps and edge hits, so it's not a jackhammer, but the high-frequency buzz is always there. After a longer ride on cracked pavement, you'll be more fatigued on the KS4 Pro than on the Air.

In corners, both feel stable enough at their intended speeds. The Air's pneumatic tyres offer more natural grip and feedback, especially in the wet, and the lighter chassis changes direction a bit more willingly. The KS4 Pro feels heavier and more "locked in" - fine in a straight line, but you're aware that you're muscling a slightly bulkier machine through tighter bends.

In real-world city use, if your roads are decent, both are acceptable. If your infrastructure is less than ideal, the Air's tyres make a bigger positive difference than the KS4 Pro's basic suspension can compensate for.

Performance

Line up at the lights and the contrast is clear.

The Inmotion Air's motor is modest on paper and feels exactly that on the road. It gets you off the line briskly enough for bike lanes, but it never surges. Acceleration is smooth, predictable and very beginner-friendly - no surprises, no harsh jumps. You reach its capped top speed reasonably quickly and then just cruise. On flat ground it feels competent; on hills it will grind its way up most urban inclines, but heavier riders will notice it running out of breath on steeper stretches and slowing to a more patient crawl.

The Hiboy KS4 Pro adds noticeable shove. That extra motor power doesn't turn it into a rocket, but compared to the Air it feels livelier. From a standstill it pulls with more authority, and overtaking slow cyclists or dealing with mild headwinds is easier. Its higher top speed gives you a bit more headroom on open paths - still well within sensible commuter territory, just less "governed". On inclines where the Air starts to look embarrassed, the KS4 Pro keeps gamely chugging on, especially with an average-weight rider.

Braking is where their characters flip again. The Inmotion relies on a combination of rear electronic regen and a front drum. The tuning is conservative but reassuring: you pull the lever, the rear motor starts dragging you down, then the drum joins in smoothly. It's hard to accidentally lock the front and catapult yourself. Stopping distances are perfectly adequate for its speed class, and the feel is progressive rather than sharp.

The KS4 Pro uses a rear disc plus front electronic braking. When dialled in properly, it stops harder than the Air and gives more initial bite. The trade-off is a bit more noise and fiddling: discs can squeak, and they occasionally need adjustment to stop rubbing. Still, on a fully loaded downhill stop, the Hiboy has the stronger anchors - as long as you're comfortable maintaining a basic disc brake once in a while.

Battery & Range

Range is where the Hiboy walks away with it.

The Inmotion Air's battery is sized for what I'd call "true urban life": short to medium hops, plus a fair bit of headroom. Ride assertively and you're looking at a daily there-and-back without sweating the battery, but longer excursions will have you watching the gauge more closely. Ride gently, and it'll stretch respectably, but this is not a week-long-commute-on-one-charge scooter.

The KS4 Pro carries a noticeably larger "fuel tank", and you feel it. Even when ridden in its fastest mode, you can cover a solid mixed commute and still have enough left not to baby it home. Dial back to more economical speeds and it edges into "charge every few days" territory for shorter commutes. For riders with longer routes or a heavy right thumb, it's clearly the more relaxed experience.

Charging times are fairly ordinary on both: plug them in at work and they're ready long before you clock out, or charge overnight at home with time to spare. The Air does come back to full slightly quicker relative to its smaller pack; the KS4 Pro needs a bit longer, which is the price you pay for that extra capacity. Both have functional battery management, though Inmotion's track record with conservative, safety-focused electronics is a notch more reassuring for long-term cell health.

Portability & Practicality

If you regularly haul your scooter up stairs, through train stations, or into small flats, the Inmotion Air is the friendlier companion. It's light enough that most adults can one-hand it up a flight without regretting their life choices. Folded, it's compact and easy to slide under a desk. The latch is positive, and once hooked to the rear, it behaves itself in your hand instead of flopping around.

The Hiboy KS4 Pro is still portable, but you feel the extra bulk every time you pick it up. Short carries - into a car boot, up one set of stairs - are fine. If your commute involves multiple station transfers and staircases, though, that extra couple of kilograms becomes noticeable very quickly. Folded size is similar on paper, but in the real world it feels a touch more unwieldy due to the weight and balance.

Water protection is decent on both, with the Air having the more confidence-inspiring rating. Neither is a rain toy, but light showers and wet streets shouldn't be an instant panic. For everyday use - locking under a desk, quick folding in front of a café, tossing into a small hatchback - the Inmotion Air is the more pleasant, "lifestyle-friendly" object; the KS4 Pro is more of a tool you tolerate carrying because it earns its keep with power and range.

Safety

Safety is more than just brakes and lights - though both matter a lot here.

The Inmotion Air feels inherently calm. Its lower speed, gentle acceleration and stable geometry mean that new riders are far less likely to get themselves into trouble. The braking sequence - regen first, then front drum - makes over-the-bars moments very unlikely, and those big pneumatic tyres give reassuring grip, especially if a sudden wet patch appears mid-corner. The headlight is surprisingly competent for its class, with a decent throw that actually lets you see potholes before you're on top of them, and the frame feels stout with little stem flex.

The Hiboy KS4 Pro ups the ante on lighting. The tri-light setup - front, rear and side illumination - makes you more visible from all directions, which is especially helpful in chaotic city traffic at dusk. Its brakes have more outright power, too. However, the solid tyres are a double-edged sword: they eliminate blowouts (a plus for safety), but they offer less mechanical grip, especially on wet or dusty surfaces, and they're more skittish on broken tarmac. Stability at its higher top speed is decent, but you're more aware that you need to respect rough surfaces and braking distances.

If you're a cautious rider or buying for a teenager or first-timer, the Air's combination of behaviour and grip feels the safer bet. If you're more experienced and you maintain the KS4 Pro properly, its stronger braking and extensive lighting package are big positives - just accept that the tyres are less forgiving when things get sketchy.

Community Feedback

Inmotion Air Hiboy KS4 Pro
What riders love What riders love
  • Clean hidden-cable design and premium feel
  • Light weight and easy carrying
  • Quiet motor and rattle-free chassis
  • Comfortable pneumatic tyres for city streets
  • Low maintenance drum + regen brakes
  • Solid water resistance and good headlight
  • Useful, well-made companion app
  • No-flat honeycomb tyres and peace of mind
  • Strong value for money at its price
  • Extra power and higher cruising speed
  • Rear suspension helping with bigger bumps
  • Bright lighting with good side visibility
  • App with locking and customisation
  • Generally responsive customer support
What riders complain about What riders complain about
  • No suspension on rough cobbles
  • Drum brake feel softer than discs
  • Speed cap can feel restrictive
  • Hill performance dips for heavy riders
  • Charging could be quicker
  • Small touches (reflectors, kickstand) feel basic
  • Occasional app/Bluetooth glitches
  • Harsh vibration on poor roads
  • Rear shock quite stiff for light riders
  • Heavier than some expect to carry
  • Real-world range below optimistic claims
  • Need to Loctite some screws early
  • Display hard to read in strong sun
  • Occasional brake and app tweaks needed

Price & Value

On sticker price alone, the Hiboy KS4 Pro is clearly more aggressive. You're paying significantly less than for the Inmotion Air and getting more motor, more battery and some form of suspension. For riders who value raw capability per euro, this is hard to ignore. If your budget is tight and you want the longest, fastest ride you can reasonably get, the KS4 Pro is the rational bargain.

The Inmotion Air sits a tier higher in price but quietly returns serve with refinement and brand maturity. You're paying for cleaner engineering, better integrated design, and a generally more "sorted" riding feel. Over the long term, the combination of pneumatic tyres, conservative electronics and low-maintenance hardware can mean fewer headaches and less money trickling away on small fixes. It's less of a screaming deal on first glance, more of a "live with it for three years and see which one you still like" proposition.

Value, then, depends on what you count: if it's watts, range and speed per euro, Hiboy wins. If it's polish, comfort and low-friction ownership, the Air makes a quieter but valid argument for itself.

Service & Parts Availability

Inmotion has spent years building distribution and service networks across Europe through established PEV dealers. That means easier access to genuine parts, firmware know-how and proper diagnostics. If something electronic gets weird, there's usually a dealer who's seen it before.

Hiboy, on the other hand, is more online and marketplace-focused. They do get decent marks from owners for sending out replacement bits - chargers, fenders, even controllers - but you're often fitting them yourself or relying on a generic repair shop. Parts like tyres (well, not tyres in this case), brakes and basic hardware are easy; deeper-level support is more of a mixed bag depending on where you live.

If you like the idea of a "proper" brand presence and dealer support, the Inmotion ecosystem is the safer harbour. If you're comfortable being your own mechanic and chasing parts online, the Hiboy is workable - just don't expect the same level of structured after-sales infrastructure.

Pros & Cons Summary

Inmotion Air Hiboy KS4 Pro
Pros
  • Very clean, integrated design
  • Light and genuinely portable
  • Comfortable pneumatic tyres
  • Smooth, beginner-friendly acceleration
  • Low-maintenance braking system
  • Good water resistance
  • Refined app and brand ecosystem
Pros
  • Strong motor for the price
  • Noticeably larger real-world range
  • No-flat honeycomb tyres
  • Rear suspension helps on bigger bumps
  • Bright multi-directional lighting
  • Excellent bang-for-buck on specs
  • Generally responsive customer service
Cons
  • No suspension for rough roads
  • Modest power, especially on hills
  • Higher price than many 350 W rivals
  • Drum brake lacks sharp bite
  • Not ideal for very long commutes
Cons
  • Harsh, buzzy ride on bad surfaces
  • Heavier to carry regularly
  • Fit and finish less polished
  • Brakes and screws need more tinkering
  • Solid tyres offer less grip and comfort

Parameters Comparison

Parameter Inmotion Air Hiboy KS4 Pro
Motor power (rated) 350 W rear 500 W rear
Motor power (peak) 720 W 750 W
Top speed ca. 25 km/h ca. 30 km/h
Battery capacity ca. 280 Wh ca. 417 Wh
Claimed range up to 35 km up to 40 km
Realistic mixed-use range ca. 20-25 km ca. 25-30 km
Weight 15,6 kg 17,5 kg
Brakes Front drum + rear regen Front electronic + rear disc
Suspension None Rear shock
Tyres 10" pneumatic (front & rear) 10" honeycomb solid
Max load 120 kg 100 kg
Water resistance IP55 IPX4
Charging time ca. 4,5 h ca. 6 h (typical)
Approximate price ca. 553 € ca. 355 €

Final Verdict - Which Should You Choose?

Look only at the spec table and the Hiboy KS4 Pro is the obvious winner: more power, more range, some rear suspension and a much lower price. If your priorities are straightforward - go further, go a bit faster, spend less - then yes, the KS4 Pro is the pragmatic choice, and it earns that position honestly.

But commuting is not done on paper, it's done on real streets with potholes, wet patches and tired riders at the end of a long day. In that world, the Inmotion Air fights back with subtler strengths: a smoother, more confidence-inspiring ride on average roads, more elegant design, lighter weight and a general air of being more carefully engineered. It may not excite spec hunters, but it quietly gets a lot of the day-to-day experience right.

My take is this: if your roads are mostly decent, you want the best power-and-range-per-euro and you don't mind a firmer ride and a bit of tinkering, the Hiboy KS4 Pro is the better buy. If you're more sensitive to ride comfort, expect to carry the scooter often, or simply prefer something that feels that bit more mature and polished even at the cost of outright performance, the Inmotion Air will probably make you happier in the long run.

Numbers Freaks Corner

Metric Inmotion Air Hiboy KS4 Pro
Price per Wh (€/Wh) ❌ 1,98 €/Wh ✅ 0,85 €/Wh
Price per km/h of top speed (€/km/h) ❌ 22,12 €/km/h ✅ 11,83 €/km/h
Weight per Wh (g/Wh) ❌ 55,71 g/Wh ✅ 41,97 g/Wh
Weight per km/h (kg/km/h) ❌ 0,624 kg/km/h ✅ 0,583 kg/km/h
Price per km of real-world range (€/km) ❌ 24,58 €/km ✅ 12,91 €/km
Weight per km of real-world range (kg/km) ❌ 0,693 kg/km ✅ 0,636 kg/km
Wh per km efficiency (Wh/km) ✅ 12,44 Wh/km ❌ 15,16 Wh/km
Power to max speed ratio (W/km/h) ❌ 14,00 W/km/h ✅ 16,67 W/km/h
Weight to power ratio (kg/W) ❌ 0,0446 kg/W ✅ 0,0350 kg/W
Average charging speed (W) ❌ 62,22 W ✅ 69,50 W

These metrics look purely at "physics and money": how much battery and speed you get per euro, how heavy each scooter is relative to its energy and power, and how efficiently each turns battery capacity into kilometres. Lower cost-per-unit and weight-per-unit figures mean better value or lighter packaging; lower Wh/km means better energy efficiency; higher W/km/h and charging power indicate more performance and faster refuelling for the given specs.

Author's Category Battle

Category Inmotion Air Hiboy KS4 Pro
Weight ✅ Noticeably lighter to carry ❌ Heavier, less portable
Range ❌ Shorter realistic range ✅ Goes further per charge
Max Speed ❌ Slower top speed ✅ Faster cruising capability
Power ❌ Modest, struggles on hills ✅ Stronger motor, better pull
Battery Size ❌ Smaller capacity pack ✅ Larger, more reserves
Suspension ❌ None, tyre-only comfort ✅ Rear shock for impacts
Design ✅ Sleek, hidden cabling ❌ More utilitarian aesthetic
Safety ✅ Calm, grippy, predictable ❌ Harsher tyres, more skittish
Practicality ✅ Easier to carry, store ❌ Heavier, bulkier feel
Comfort ✅ Softer on mixed tarmac ❌ Buzzier on rough roads
Features ❌ Simpler, fewer extras ✅ More power, lights, shock
Serviceability ✅ Easier dealer-style support ❌ More DIY, online parts
Customer Support ✅ Strong dealer network ❌ Online-centric, less formal
Fun Factor ❌ Mild, sensible character ✅ More punch, higher speed
Build Quality ✅ Tighter, more refined ❌ Feels cheaper in details
Component Quality ✅ Better chosen components ❌ More cost-cutting evident
Brand Name ✅ Strong PEV reputation ❌ Mass-market budget image
Community ✅ Enthusiast-focused user base ❌ Broad, less specialist
Lights (visibility) ❌ Good but basic setup ✅ Better side illumination
Lights (illumination) ✅ Strong headlight beam ❌ Adequate but less focused
Acceleration ❌ Gentle, not exciting ✅ Noticeably quicker shove
Arrive with smile factor ❌ Calm, not thrilling ✅ Extra speed, more grin
Arrive relaxed factor ✅ Softer, quieter ride ❌ More vibration fatigue
Charging speed ✅ Faster to refill battery ❌ Longer for full charge
Reliability ✅ Conservative, proven electronics ❌ More variance, more tweaks
Folded practicality ✅ Compact, easy to stash ❌ Heavier, less pleasant
Ease of transport ✅ Train-and-stairs friendly ❌ Fine, but more effort
Handling ✅ Lighter, more intuitive ❌ Heavier, harsher feedback
Braking performance ❌ Adequate, softer feel ✅ Stronger overall stopping
Riding position ✅ Upright, relaxed stance ❌ Slightly less refined
Handlebar quality ✅ Solid, minimal flex ❌ Needs screw attention
Throttle response ✅ Very smooth, predictable ❌ Less refined controller
Dashboard / Display ❌ Simple, smaller readout ✅ Larger, more informative
Security (locking) ✅ App lock, discreet looks ✅ App lock, common form
Weather protection ✅ Better IP rating ❌ Lower splash resistance
Resale value ✅ Stronger brand desirability ❌ Budget image hurts resale
Tuning potential ❌ More locked-down ecosystem ✅ Easier to tweak, mod
Ease of maintenance ✅ Fewer moving parts ❌ Brakes, screws, more checks
Value for Money ❌ Pricier for given specs ✅ Strong specs for price

Overall Winner Declaration

Winner

In the Numbers Freaks Corner, the INMOTION AIR scores 1 point against the HIBOY KS4 Pro's 9. In the Author's Category Battle, the INMOTION AIR gets 25 ✅ versus 15 ✅ for HIBOY KS4 Pro.

Totals: INMOTION AIR scores 26, HIBOY KS4 Pro scores 24.

Based on the scoring, the INMOTION AIR is our overall winner. Between these two, the Hiboy KS4 Pro comes out as the more compelling package for riders who prioritise range, speed and price above all else - it simply delivers more go for less money, and that's hard to argue with. Yet the Inmotion Air still tugs at you if you care about how a scooter feels day in, day out: it's calmer, more refined and easier to live with when your commute isn't a perfectly smooth spec-sheet test track. If you want a budget-friendly scooter that punches above its weight and don't mind a firmer, more utilitarian character, the KS4 Pro is the one to ride home on. If you'd rather sacrifice some raw numbers for a quieter, more polished partner that treats your body and nerves a little better, the Inmotion Air will quietly win you over every morning on the way to work.

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.