If you’ve been searching for “Navimow i220 review,” “best robot mower for large lawns,” or “is a robot lawn mower worth it in 2026,” you’ve probably noticed the same three questions come up again and again: How much time does it actually save? Is grasscycling really good for the lawn? And how does the running cost stack up against a “real” petrol mower? This review breaks down all three — plus everything else the i220 brings to the table.
What Is the Navimow i220?
The Navimow i220 is Segway’s flagship wire-free robotic mower, built for mid-to-large residential lawns. Unlike older robot mowers that need a buried boundary wire, the i220 uses solid-state LiDAR combined with camera-based Vision and (on the Pro variant) Network RTK positioning to map your garden automatically — no antenna installation, no trench digging, no manual wire-laying weekend lost.
The i220 LiDAR runs a 10 Ah battery, charges in around 120 minutes, and delivers roughly 210 minutes of mowing per charge, covering up to 560 m² per charge cycle. Segway’s LiDAR sensor scans the surroundings at 200,000 points per second to build high-resolution 3D maps of the garden. On the higher-spec i220 LiDAR Pro, navigation is handled by a “triple fusion” system combining LiDAR, Network RTK, and Vision, letting the mower work reliably under trees, through narrow passages, and even at night.
Quick spec snapshot:
| Spec | Navimow i220 LiDAR |
|---|---|
| Max coverage | Up to ~1,000–2,000 m² depending on layout complexity |
| Battery | 10 Ah, ~120 min charge time |
| Runtime per charge | ~210 minutes, up to 560 m² per charge |
| Navigation | Solid-state LiDAR + Vision (Pro adds Network RTK) |
| Obstacle detection | Recognizes 200+ object types, including 20+ animal types, from over a metre away |
| Slope handling | AWD variants climb 45% (24°) gradients; the AWD Pro chassis is rated for 55% (29°) slopes |
| Setup | Automated boundary mapping, no boundary wire needed, set up in minutes |
| Noise level | Comparable Navimow LiDAR models run around 59 dB, notably quieter than a traditional mower |
| Price (UK) | From roughly £1,499–£1,699 depending on model and bundle |
Prices and exact coverage figures vary by retailer and region — always check current pricing before buying.
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The Biggest Benefit: Getting Your Time Back
This is the number one reason people search for a robot mower in the first place. A traditional 500–1,000 m² lawn typically takes 45–90 minutes to mow, trim, and clear up after — every single week during growing season. Multiply that across a six-month season and you’re looking at 20–35 hours of your life spent behind a mower.
The i220 removes that time cost almost entirely:
- Set-and-forget scheduling. Once the mower automatically detects your yard boundaries with minimal manual intervention, you set a mowing schedule in the app and it runs itself — including returning to dock and recharging without you lifting a finger.
- Frequent “little and often” cuts. Because it works autonomously most days, the i220 cuts small amounts of grass regularly instead of one long, heavy session. This is actually healthier for the lawn (more on this below) and means you never face an overgrown “jungle mow” again.
- No fuel runs, no cord untangling, no bin bags of clippings to haul to the curb. The entire maintenance loop — cutting, mulching, charging — is handled by the machine.
- Remote monitoring. The Navimow app gives you geo-fence alerts, lift alarms, GPS tracking, and Apple Find My support, so you’re not even spending time checking on it physically.
For most households, that’s the equivalent of reclaiming a full day or more per month during peak growing season — time that goes back to the family, the garden beds, or simply doing nothing at all.
Grasscycling: Putting Nutrients Back Into the Soil
This is the benefit that doesn’t get talked about enough, and it’s arguably as valuable as the time savings.
Robot mowers like the i220 don’t collect clippings in a bag. Instead, they mow little and often, cutting only the top few millimetres of grass at a time and leaving the fine clippings on the lawn to break down — a practice known as grasscycling or mulch mowing. Here’s why that matters:
- Free, natural fertilizer. Grass clippings are roughly 90% water and rich in nitrogen. As they decompose, they return that nitrogen and other nutrients directly into the soil, reducing how much synthetic fertilizer your lawn needs over a season.
- Improved soil structure and moisture retention. Fine mulched clippings act like a light organic mulch layer, helping the topsoil retain moisture between waterings and buffering soil temperature swings.
- Less waste, less hassle. No bagging, no green-waste bin trips, no clippings baking in plastic sacks. It’s a genuinely more sustainable way to maintain a lawn.
- A denser, greener lawn over time. Because clippings are always small (the mower never lets grass grow long enough to need collecting), the lawn doesn’t get smothered by thatch the way it can with an infrequently-mowed, bagged lawn.
In short: the i220 isn’t just cutting your grass — it’s quietly running a nutrient recycling loop every time it works, at zero extra effort.
Other Notable Benefits
- Precision navigation for tricky gardens. For gardens with heavy tree cover or “signal shadow” areas where GPS-only mowers typically struggle, LiDAR-based navigation keeps the mower on schedule without losing its way, and performs identically in total darkness since it isn’t light-dependent.
- Lawn-friendly turning. A third-wheel Xero-Turn steering design is engineered to turn more gently on the grass than conventional robot mowers, reducing the wheel-slip scarring you sometimes see with cheaper models.
- Safety around kids and pets. The obstacle system detects over 200 object types with sub-centimetre precision and maintains a safe buffer even with children playing or pets running nearby.
- Weather-adaptive scheduling. Rain-sensing and forecast-based scheduling mean the mower automatically skips wet conditions rather than compacting a soggy lawn or tracking mud.
- Quiet operation. Running at around 59 dB, it’s quiet enough to mow during the day without disturbing a home office or a napping baby, and doesn’t draw noise complaints the way a petrol mower does.
- Theft protection and remote alerts. Built-in GPS tracking, lift alarms, and geo-fencing mean you’re notified immediately if the mower is moved or removed from your property.
Navimow i220 Cost to Run vs. a Powerful Petrol Mower
This is the question most buyers actually want answered before they commit £1,500+ to a robot mower: does it actually save money, or just time?
Below is an illustrative annual cost comparison for a mid-size UK lawn (roughly 500–800 m²) mowed regularly through a 7-month growing season. Treat these as ballpark estimates — your actual costs will depend on your electricity tariff, local fuel prices, and how often you mow.
| Cost category | Navimow i220 (robot/electric) | Petrol self-propelled mower |
|---|---|---|
| Upfront cost | ~£1,500–£1,700 | ~£300–£600 |
| Running energy cost | A ~10 Ah charge cycle uses a small fraction of a kWh; running daily through the season typically costs somewhere in the region of £15–£30/year in electricity | Petrol for weekly mowing typically runs £80–£150/year depending on mower size and fuel prices |
| Servicing/maintenance | Blade replacement 1–2x/year (~£20–£40); otherwise largely self-maintaining | Annual service, oil changes, air filter, spark plug: typically £60–£120/year |
| Labour (your time) | Near-zero — autonomous | 30–90 min/week of your own time, worth real money if you’d otherwise hire help |
| Waste disposal | None — clippings mulch back into the lawn | Green waste bags/bin collection costs, plus disposal time |
| Typical 5-year total running cost | Roughly £250–£450 (energy + blades) | Roughly £700–£1,300 (fuel + servicing + consumables), excluding your labour |
Even accounting for the higher upfront price, the i220 tends to close the cost gap within 3–5 years purely on running costs — before you even put a value on the time you get back. If your lawn is large enough to otherwise justify a “powerful” self-propelled or ride-on petrol mower, the gap is even bigger, since those machines cost more to fuel, service, store, and transport.
Who Should (and Shouldn’t) Buy the i220
The i220 isn’t the right fit for everyone. If your garden is simple, flat, open, with little shade and no complicated layout, a cheaper wireless model in the same family may do the job just as well, and you’d be paying for navigation capability you won’t use. Where the i220 genuinely earns its price is in gardens with:
- Trees, hedges, or buildings that create GPS “black spots”
- Multiple zones, narrow passages, or complex shapes
- A desire to mow at night or in low light without losing accuracy
- A lawn large enough that manual mowing has become a real weekly time cost
It’s also worth noting the model is relatively new to market, so while official specs and early user feedback are promising, there’s not yet the same depth of long-term, multi-season reliability data you’d find with older, more established robot mower generations.
Frequently Asked Questions
Does the Navimow i220 need a boundary wire? No. It uses automated mapping technology, eliminating the need for boundary wires or antenna installation, and can typically be set up within minutes.
How big a lawn can the Navimow i220 handle? The i220 LiDAR is rated for complex lawns up to around 1,000 m², with the LiDAR Pro variant suited to gardens up to roughly 2,000 m².
Is a robot mower actually cheaper than a petrol mower long-term? Based on typical UK energy and fuel costs, running costs alone (electricity vs. fuel, plus servicing) tend to be lower for the i220 over a multi-year period, though the upfront purchase price is higher than most petrol mowers.
Does mulching with a robot mower actually help the lawn? Yes — leaving fine clippings on the lawn (grasscycling) returns nitrogen and organic matter to the soil, reduces fertilizer needs, and helps retain soil moisture, since the mower cuts small amounts frequently rather than long grass all at once.
Is the Navimow i220 good for sloped gardens? The standard i220 LiDAR is best suited to flatter to gently sloping ground; for steeper terrain, the AWD variants are built specifically for slopes up to 45%, with the AWD Pro chassis rated up to 55%.
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Final Verdict
The Navimow i220 is one of the more compelling arguments yet for switching away from a traditional mower — not because it’s flashy, but because it quietly solves three real problems at once: it gives you back hours every month, it feeds nutrients back into your lawn every time it runs, and over a few seasons it typically costs meaningfully less to operate than a petrol mower once you add up fuel, servicing, and disposal. For anyone with a mid-to-large, moderately complex lawn who’s tired of losing their weekends to mowing, it’s worth serious consideration.
Note: Pricing, coverage figures, and specifications can change with regional availability and firmware updates — always confirm current details on the official Navimow site or an authorised retailer before purchasing.