Segway Navimow X330 vs X350 (2026): Which to Buy

Quick verdict: if the Segway Navimow X350 (MowScout Score 85) and the Navimow X330 (Score 81) cost the same on the day you buy — and they often do, both landing around $2,799 street — buy the X350. It is the same X3-series mower with an extra half acre of capacity and a wider deck for no extra money. Buy the X330 only if the X350 is back at its full $3,499 MSRP and your lawn is comfortably under an acre, where you'd save roughly $700 on capacity you will never use. These two are one platform at two sizes: identical hybrid navigation, the same 50% slope rating, the same AWD chassis, the same cut heights, zones, connectivity, and warranty. The whole decision comes down to how big your yard is and what the X350 costs the week you check.

This comparison is spec-verified and data-driven, not hands-on. We have not run either unit on your lawn, so every number here comes from Segway's published specifications and the MowScout Score, cross-checked against retail listings. There are no fabricated field tests, timings, or photos on this page. Prices are street estimates as of mid-2026 — confirm the current price before you buy, because this category discounts weekly and the X350's sale price is the crux of the whole decision. For the wider context on how these navigation systems differ from LiDAR and RTK, start with the pillar, robot lawn mowers: RTK vs LiDAR vs vision, then come back for the head-to-head.

At a glance: X330 vs X350

\*Street estimates as of mid-2026 — verify before purchase.

The pattern is clear in one glance: the two mowers are tied on everything about how they mow — navigation, slope, drivetrain, cut height, zones, connectivity — and differ only on how much they mow. The X350 adds half an acre of capacity and a wider deck. The rest of this page is really about one question: does that extra capacity cost you anything, and do you need it?

Segway Navimow X330

The X330 is Navimow's open-sky one-acre machine and the value end of the X3-series. It covers up to 1.0 acre with matching ~1.0-acre daily coverage, runs genuine all-wheel drive rated to a 50% slope, and uses the series' hybrid vision-plus-satellite navigation — the same efficient GPS-and-camera system as the X350, tuned for long straight passes across an open lawn. It maps 12 zones, cuts 2–4 inches tall on a 9.3-inch deck, runs quietly, and carries AI-vision obstacle avoidance, anti-theft with GPS tracking, Wi-Fi/Bluetooth/4G, and a 2-year warranty. The honest caveats are two. First, its navigation is sky-dependent: dense tree cover or tall structures degrade the fix, so it is an open-lawn pick, not a wooded one. Second, its 1.0-acre rating leaves no headroom for a true full acre — you would be running it right at its ceiling. At about $2,799 (which is also its MSRP, so there is little room for it to drop), it earns a MowScout Score of 81. Read the full X330 review.

Segway Navimow X350

The X350 is the large-lot flagship of the line and the highest single-mower capacity Navimow ships. It covers up to 1.5 acres — the extra half acre over the X330 — on the same AWD chassis, the same 50% slope rating, and the same hybrid vision-plus-GPS navigation. Where it physically differs is the deck: a wider 12-inch cutting width (versus the X330's 9.3 inches) that takes fewer passes to finish open ground, backed by a larger battery to support the bigger area. It shares the X330's 12 zones, 2–4-inch cut height, AI-vision obstacle avoidance, anti-theft/GPS, Wi-Fi/BT/4G, and 2-year warranty, and runs quietly at a rated ~60 dB. Two caveats carry over from the platform. Its daily coverage is about 1.0 acre/day — below its 1.5-acre max — so a full 1.5-acre lawn runs on a longer-than-daily cycle; plan the schedule for a fast spring. And like every X-series mower it is sky-dependent, wanting a clear-sky antenna position rather than heavy canopy. Its list price is $3,499, but it is frequently discounted to about $2,799 — and at that sale price it is a lot of capacity for the money, which is why it earns a MowScout Score of 85. Read the full X350 review.

What's identical on both mowers

This is the part that makes the decision simple: nearly everything you would notice day to day is the same, because these are one design at two sizes.

• X3-series hybrid navigation. Both fuse AI vision with satellite (GPS) positioning — the same system, tuned the same way. Neither is a LiDAR or tree-cover mower; both are open-sky machines that want a clear antenna position. If your lot is heavily shaded, that shared limitation applies to both, and you should look at a LiDAR or fusion model on our best robot mowers for large yards guide instead.
• 50% slope on genuine AWD. Both put power to all wheels and are rated to a 50% grade (about 27°). That is a real moderate-slope capability, identical on both units — the X350 does not climb any better than the X330.
• Cut, comfort, and quiet. Both cut from 2 to 4 inches tall, both run quietly (the X350 is rated ~60 dB and the X330 is comparably quiet on the same platform), both handle damp grass, and both rate "ok" on edge cutting — they leave a thin trim strip at hard borders like most robot mowers.
• Smarts, security, and support. Both carry AI-vision obstacle avoidance, anti-theft with GPS tracking, Wi-Fi/Bluetooth/4G connectivity, a polished app, 12 mapped zones, a charging base station with an antenna, and a 2-year warranty.

In other words, whichever one you pick, the finished lawn — the stripe height, the edge quality, the slope it can climb, the noise, the app experience — is the same. The choice is purely about scale and price.

What actually differs

Only a handful of specs separate the two, and they cluster around one idea: the X350 is the bigger machine.

1. Total capacity — the headline. The X330 maintains up to 1.0 acre; the X350 maintains up to 1.5 acres. That extra half acre is the main thing the X350's higher list price pays for, and the only spec difference that changes the buying decision for most people.

2. Cutting deck width. The X350 uses a wider 12-inch deck versus the X330's 9.3 inches. The wider deck takes fewer passes to cover open ground, which is part of how the X350 services its larger area — and a modest efficiency edge even on smaller lawns.

3. Battery and runtime. The X350's larger area rating is backed by a bigger battery and longer runtime per charge, which it needs to cover more total ground between docking. The X330's smaller battery is sized to its 1.0-acre job.

4. List price and discounting behavior. The X330's MSRP is $2,799, and its street price sits right there — there is little discount headroom because it is already priced low. The X350's MSRP is $3,499, but it is often on sale to about $2,799. This is the crux of the comparison, and it gets its own section below.

5. MowScout Score. The X350 scores 85 to the X330's 81 — a gap driven mostly by the X350's larger capacity and better price-per-acre when it's on sale, on an otherwise identical feature set.

Note the one place the two are not different that you might expect them to be: daily coverage. Both publish about 1.0 acre/day. The X350's advantage is total maintained area, not how much it mows in a single day — so on a full 1.5-acre lawn it runs a multi-day cycle. That is an honest nuance worth planning around, not a knock: for most sub-1.5-acre lawns it simply means comfortable headroom.

The price nuance: when the X350 is the same price as the X330

This is the decision. Because the X330 and X350 share a platform, the only reason to buy the smaller one is to save money — and whether you actually save anything depends entirely on the X350's live price the week you shop.

Scenario A — the X350 is on sale (~$2,799, same as the X330). This is common, because the X350's $3,499 MSRP discounts frequently to around the X330's price. When that happens, the X350 is the obvious buy: same navigation, same slope, same AWD, same everything — plus an extra half acre of capacity and a wider deck — for the same money. There is no reason to choose the X330 in this scenario. Even if your lawn is under an acre today, the extra capacity is free headroom for a fast-growing spring or a future expansion.

Scenario B — the X350 is at full MSRP ($3,499). Now there is a real ~$700 gap, and the X330 earns its place. If your lawn is comfortably under an acre, paying $700 for capacity you cannot use is a waste — buy the X330 and pocket the difference. If your lawn is near or above an acre, the X350's headroom is worth the premium (see the sizing section below), because the X330 has none to give.

So the practical rule is short: check the X350's price first. If it is at or near $2,799, buy the X350. If it is at $3,499 and your yard is small, buy the X330. Because prices move weekly in this category, treat both numbers here as street estimates and verify the current price before you buy — this is the one comparison where the sale sticker, not the spec sheet, decides the winner.

How to size the X-series to your yard: the 15% headroom rule

Capacity ratings are measured under ideal conditions — flat, dry, obstacle-free, perfectly mapped. Your yard is none of those. Slopes, beds, trees, thick spring growth, and periodic re-mapping all reduce the effective area a mower maintains. So the rule we apply across MowScout is: measure your mowable area, add about 15%, and buy a rating at or above that number.

• A 1.0-acre lawn needs a rating of ~1.15 acres. The X350 (1.5 acre) clears it with room to spare; the X330 (1.0 acre) does not — it would run right at its ceiling every session, with nothing left for a wet week or a spring flush. For a genuine full acre, size up to the X350.
• A 0.75-acre lawn needs ~0.86 acres. Both units clear it, but the X330 is the efficient fit and the X350 is comfortable headroom — here the choice comes back to price.
• A 0.5-acre lawn or smaller is well within the X330's range. Unless the X350 is on sale at the same price, the X330 (or a smaller Navimow) is the smarter spend.

Then apply the second half of the rule: check daily coverage, not just max area. Both mowers cover ~1.0 acre/day, so a lawn approaching 1.5 acres on the X350 runs a multi-day cycle. That is fine for slow-growing turf and something to schedule around in a fast spring. For the full large-lot sizing playbook and how the X-series stacks up against the LUBA and GOAT flagships, see best robot mowers for large yards.

Who should buy the Navimow X330

Choose the X330 if:

• The X350 is at full $3,499 MSRP and your lawn is comfortably under an acre — you save ~$700 on capacity you won't use.
• Your yard is a mostly open, sunny lawn up to roughly 0.85 acre with the headroom rule applied.
• Your slopes are moderate (up to 50%) and you want genuine AWD traction without a flagship price.
• You want the familiar Navimow app, quiet operation, and 4G anti-theft in the smallest, cheapest X3-series body.

Skip the X330 if the X350 is on sale at the same ~$2,799 (just buy the X350 for the free capacity), if your lawn is near or over an acre (the 1.0-acre rating leaves no headroom), or if your lot is heavily shaded (both X-series mowers want clear sky — look to LiDAR instead).

Who should buy the Navimow X350

Choose the X350 if:

• Your lawn runs from about 1.0 up to 1.5 acres and needs real capacity headroom.
• The X350 is on sale near $2,799 — at that price it's the better buy at any yard size, because the extra half acre and wider 12-inch deck are effectively free.
• You want the fewest-passes coverage of an open lawn from the wider deck and larger battery.
• You want future-proof headroom for a lawn you might expand, on the same open-sky hybrid navigation.

Skip the X350 if your yard is small and the X350 is at full $3,499 MSRP — you'd be paying for area and battery you can't use, and the X330 delivers the identical cut, slope, and navigation for less. And skip both if your lot is heavily wooded or steeper than 50%; the X-series is an open, moderate-slope platform, and no amount of capacity fixes a canopy or a cliff.

Full spec comparison

Every figure below is a manufacturer rating paired with the MowScout Score. Slope numbers are dry-condition ceilings — subtract headroom for wet grass. Prices are street estimates as of mid-2026; verify before buying.

\*Street estimates as of mid-2026 — verify before purchase. If your lot is steep or wooded, the X-series may not be the right platform; compare the field on best robot mowers for large yards.

Frequently asked questions

What's the real difference between the Navimow X330 and X350? Same X3-series platform, two sizes. Both use hybrid vision-plus-GPS navigation, both are AWD to 50%, both cut 2–4 inches across 12 zones with 4G, and both carry a 2-year warranty. The X330 covers up to 1.0 acre on a 9.3-inch deck; the X350 covers up to 1.5 acres on a wider 12-inch deck. The X330 lists at $2,799; the X350 lists at $3,499 but often sells for about $2,799.

Should I buy the X330 or X350 in 2026? Check the X350's price first. If it's on sale near $2,799, buy the X350 for the free extra capacity. If it's at its full $3,499 MSRP and your lawn is under an acre, buy the X330 and save ~$700.

Is the X350 worth $700 more than the X330? Only when the gap actually exists — at the X350's full MSRP against the X330's street price. Then it's worth it if your lawn is near or above an acre, and a waste if it's smaller. But the X350 is frequently discounted to the X330's price, and at that point the premium disappears and the X350 wins outright.

Do they use the same navigation, and can they mow under trees? Same hybrid vision-plus-GPS navigation, and no — both are open-sky mowers that need a clear-sky antenna position. Dense canopy degrades the fix on both. For a wooded lot, choose a LiDAR or fusion mower instead.

What size yard does each handle? The X330 is rated to 1.0 acre, the X350 to 1.5 acres. Both cover about 1.0 acre/day, so a full 1.5-acre lawn on the X350 runs a longer-than-daily cycle. Apply the 15% headroom rule: a full acre wants the X350; the X330 suits open lawns up to roughly 0.85 acre.

Can either handle a steep hill? Both are AWD rated to 50% (about 27°) on dry grass — moderate, not steep. For banks over 50%, step up to an 80%-rated AWD or 4WD mower.

The bottom line

The Navimow X330 and X350 are the same well-built, quiet, open-sky robot mower sold in two capacities: identical hybrid navigation, identical 50% AWD traction, identical cut, zones, connectivity, and warranty. The X350 (Score 85) adds a half acre of capacity and a wider 12-inch deck; the X330 (Score 81) trims that back to a 1.0-acre, 9.3-inch machine for a lower list price. Because the X350's $3,499 MSRP so often falls to the X330's ~$2,799 street price, the winner usually comes down to the sticker on the day you buy: at equal prices, take the X350; only when the X350 is at full MSRP and your lawn is small does the X330 make sense. Neither is a tree-cover or steep-slope mower — both are open, moderate-slope platforms. Match the capacity to your yard, check the live price, and you'll be happy either way.

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The configurator screens your exact area, slope, sky view, and budget against every model we track — so you can confirm whether you truly need the X350's extra acre of headroom, whether the X330 fits, or whether a LiDAR mower suits your trees better than either Navimow. Compare the two directly in their full reviews: Segway Navimow X330 and Segway Navimow X350, and see how they rank against the flagships on best robot mowers for large yards.

MowScout is reader-supported and may earn a commission from links on this page. Our picks are spec-verified and data-driven — based on published manufacturer specifications and verified US pricing, not hands-on lab testing. We have not physically tested these mowers; there are no fabricated measurements, timings, or photos on this page. Prices are street estimates as of mid-2026; always confirm the current price before buying. See our full disclosure.