Best-of list
Best Robot Mowers for Large Yards: 1 Acre and Up (2026)
Robot mowers rated for an acre or more, ranked on published lawn size, runtime, cutting width, slopes and what reviewers and owners report.
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Our picks at a glance
- 8.3/10 research score
-
Best for large lawns with trees
Steep, complex lawns up to 1.25 acres, including trees
8.4/10 research score -
Best for 2 acres
Open, gently sloped lawns up to 2 acres where dealer support matters
7.2/10 research score -
Best LiDAR-only for big lawns
Large, steep lawns up to 1.24 acres with trees
7.9/10 research score -
Best for extreme terrain
Very steep, rough or large lawns where wheeled mowers fail
7.8/10 research score
Our verdict
For 1 to 1.5 acres with hills, the Navimow X450 is the best pick: 84% slopes, a 17-inch cut and free network RTK. The Mammotion LUBA 3 AWD 5000 is better for big lawns with trees, the Husqvarna 440 iQ covers 2 acres on gentle ground with a 4-year warranty, and the tracked Lymow One Plus handles the steepest, roughest land.
Big lawns are where a robot mower saves the most time, but also where weak spots show: a short runtime, a narrow cut or a slope just beyond the rating can leave part of the lawn uncut. Every mower here is rated for at least an acre. We ranked them on published specs, reviews and owner reports; see how we research.
What matters on big lawns
- Rated area, with margin. Makers' ratings assume simple shapes. Husqvarna, for example, rates the 440 iQ for 2 acres of simple lawn but 1 acre of irregular lawn.
- Cutting width and runtime. A 15.7- to 17-inch cut and two to three hours per charge get through big areas faster.
- Connectivity across the yard. Large lawns often reach beyond Wi-Fi; built-in 4G (Navimow, Mammotion, Husqvarna) keeps the app connected.
- Slopes. Big properties are rarely flat; check the steepest bank against the rating.
Prices
October 17, 2026 list prices: Navimow X450 $2,999; Mammotion LUBA 3 AWD 5000 $3,299; Husqvarna 440 iQ $4,299.99; Dreame A3 AWD Pro 5000 $3,499.99 (on sale for $2,999.99); Lymow One Plus $3,199.
The picks in detail
1. Navimow X450
List price $2,999 (as of Oct 2026)
1.5 acres, 84% slopes, a 17-inch cut and free network RTK.
Pros
- 84% slope rating with four-wheel drive and suspension
- No wire and no antenna needed (free network RTK)
- 17-inch cut with automatic height adjustment
- Rain sensor, IP66 and built-in 4G
Cons
- 64 lb and large, hard to store
- Reviewers report hand trimming near obstacles
- Few striping patterns
- Cellular service paid after the free period
2. Mammotion LUBA 3 AWD 5000
List price $3,299 (as of Oct 2026)
1.25 acres with LiDAR, network RTK and cameras, AWD for 80% slopes and a 215-minute runtime.
Pros
- 80% slope rating with all-wheel drive
- 360° LiDAR + cameras + network RTK
- 15.7-inch two-disc cut
- No wire, no antenna, 3 years of free 4G
Cons
- Expensive
- Owners of earlier LUBAs report trapping and slow repairs
- Choose Standard or High cutting version at purchase
3. Husqvarna Automower 440 iQ
List price $4,299.99 (as of Oct 2026)
The largest rating here (2 acres) with a 4-year warranty; rear-wheel drive for gentle slopes.
Pros
- 4-year warranty and dealer network
- Virtual boundary with EPOS, wire optional
- Electric height adjustment 1–4 in
- Mows up to 24 hours a day
Cons
- Rear-wheel drive, 45% slopes (15% at the edge)
- EPOS needs open sky and a reference station
- Reviewer logged more error codes than rivals
- Pricier than newer brands
4. Dreame A3 AWD Pro 5000
List price $3,499.99 (as of Oct 2026)
1.24 acres, AWD for 80% slopes and a 15.7-inch cut with no RTK station.
Pros
- AWD with an 80% slope rating
- LiDAR + cameras, no wire or RTK
- 15.7-inch cut with app-set height
- AirTag-compatible theft tracking
Cons
- LiDAR overheating reported in hot weather
- Can leave ruts on tight turns in wet ground
- Runtime and warranty not published
5. Lymow One Plus
List price $3,199 (as of Oct 2026)
Tracks for 45° (100%) slopes and up to 1.73 acres a day, at 78.5 lb.
Pros
- Tracks for 45° (100%) slopes
- Mulches grass and leaves
- Up to 1.73 acres a day
- Long-life LiFePO4 battery
Cons
- 78.5 lb, the heaviest here
- Needs an RTK reference station
- Owners report early faults and summer overheating
- Slow, email-only support
| Spec | Navimow Navimow X450 | Mammotion Mammotion LUBA 3 AWD 5000 | Husqvarna Husqvarna Automower 440 iQ | Dreame Dreame A3 AWD Pro 5000 | Lymow Lymow One Plus |
|---|---|---|---|---|---|
| Research score | 8.3/10 research score | 8.4/10 research score | 7.2/10 research score | 7.9/10 research score | 7.8/10 research score |
| List price | $2,999 | $3,299 | $4,299.99 | $3,499.99 | $3,199 |
| Coverage and terrain | |||||
| Max lawn area | 65,340 sq ft | 54,450 sq ft | 87,120 sq ft (best) | 54,014 sq ft | 75,359 sq ft |
| Max slope | 84 % | 80 % | 45 % | 80 % | 100 % (best) |
| All-wheel drive | Yes | Yes | No | Yes | Yes |
| Multiple zones | Yes | Yes | Not published | Yes | Yes |
| Narrowest passage | Not published | 27.6 in | Not published | Not published | Not published |
| Cutting | |||||
| Cutting width | 17 in (best) | 15.7 in | 9.4 in | 15.7 in | 16 in |
| Lowest cutting height | 0.75 in | 1 in | 1 in | 1.2 in | 1.2 in |
| Highest cutting height | 4 in | 4 in | 4 in | 3.9 in | 4 in |
| Cutting height set in app | Yes | Not published | Yes | Yes | Not published |
| Edge cutting mode | Not published | Not published | Not published | Yes | Not published |
| Blades | 2 discs with 12 pivoting blades, floating cut | 2 discs with 6 pivoting razor blades each | 3 pivoting razor blades | Not published | Dual rotary mulching blades, 3,000–6,000 rpm |
| Navigation and smart features | |||||
| Navigation | EFLS NRTK: network RTK + 360° camera vision + visual-inertial odometry | 360° LiDAR + network RTK (iNavi) + dual-camera AI vision | EPOS satellite RTK with reference station (virtual boundary), or a physical boundary wire | OmniSense 3.0: 360° 3D LiDAR + binocular AI vision | RTK (reference station included) + VSLAM visual mapping |
| Boundary wire needed | No | No | No | No | No |
| RTK antenna needed | No | No | Yes | No | Yes |
| Obstacle detection | VisionFence: 360° RGB camera + ToF, 200+ object types | LiDAR + dual cameras, 300+ obstacle types, anti-fall | Not published | 360° 3D LiDAR + binocular cameras | AI vision + 5 ultrasonic sensors + 2 Hall sensors |
| App control | Yes | Yes | Yes | Yes | Yes |
| Wi-Fi | Yes | Not published | Yes | Not published | Yes |
| Bluetooth | Yes | Not published | Yes | Not published | Yes |
| Cellular (4G) | Yes | Yes | Yes | Yes | Yes |
| Anti-theft | GPS tracking, lift and out-of-boundary alarms, PIN, proximity unlock, Find My | Not published | GPS theft tracking, PIN code, alarm | Lift alert, 4G location, AirTag compatible | Not published |
| Battery and charging | |||||
| Battery capacity | 12,800 mAh | 15,000 mAh (best) | 7,500 mAh | 10,000 mAh | 15,000 mAh (best) |
| Runtime per charge | 110 min | 215 min (best) | 138 min | Not published | 180 min |
| Charging time | 90 min | 145 min | 54 min (best) | Not published | 90 min |
| Weather and noise | |||||
| Rain sensor | Yes | Yes | Not published | Not published | Not published |
| Water resistance | IP66 | IPX6 | IPX5 | IPX6 | IPX6 |
| Noise level | 68 dB | 70 dB | 62 dB (best) | 65 dB | Not published |
| Size and warranty | |||||
| Weight | 63.71 lb | 41 lb | 39 lb | 52.7 lb | 78.5 lb |
| Dimensions | 33.5 × 24.0 × 13.8 in | 27.2 × 21 × 11 in (Standard version) | 29.6 × 21.4 × 11.1 in | 29.1 × 20.9 × 12.8 in | Not published |
| Warranty | 3 years | 3 years | 4 years (best) | Not published | 3 years |
| Where to buy | Check price at Navimow (opens in a new tab) | Check price at Mammotion (opens in a new tab) | Check price at Husqvarna (opens in a new tab) | Check price at Dreame (opens in a new tab) | Check price at Lymow (opens in a new tab) |
Frequently asked questions
Can a robot mower handle 2 acres?
How long does a robot take to mow an acre?
Sources
Specs, prices and claims in this article come from these sources.
- Navimow X4 product page · Navimow · accessed Oct 17, 2026
- Mammotion LUBA 3 AWD specifications · Mammotion · accessed Oct 17, 2026
- Husqvarna Automower 440 iQ specifications · Husqvarna · accessed Oct 17, 2026
- Dreame A3 AWD Pro specifications · Dreame · accessed Oct 17, 2026
- Lymow One Plus specifications · Lymow · accessed Oct 17, 2026
Written by
Research and editing
The RobotMowers editorial team researches robot lawn mowers from manufacturer documents, published measurements and owner reports.
