Every All-Wheel-Drive Robot Mower Sold in the US: 7 Models Compared

All-wheel drive is the feature that separates hill-capable robot mowers from the rest. A two-wheel-drive robot that spins out on a wet bank will leave a strip of tall grass and, sooner or later, a call for help in the app. An AWD robot drives every wheel, so it keeps grip on slopes that would stop most mowers.

Until recently there were only one or two AWD models to choose from. Now there are seven lines from five brands. This list compares them on the specs that matter, from each brand’s own US pages, with drawbacks from independent hands-on reviews. MowReview quotes no prices and hasn’t tested these mowers. How we research explains why.

The seven, side by side

The list, model by model

1. Segway Navimow X4: the steepest rating

Segway rates the X4 for 84% (40-degree) slopes, the highest of any wheeled robot mower we found. It has four-wheel drive with dual suspension, a 17-inch cutting deck, 360-degree AI vision and a cutting height from 0.75 to 4 inches in quarter-inch steps. That range covers everything from bermuda to standard St. Augustine. PCWorld praised its navigation on complicated lawns, though its own yard wasn’t steep enough to test the 84% claim. It’s also large: PCWorld lists 63.7 pounds.

2. Mammotion LUBA 3 AWD: the best-known AWD robot

Mammotion’s third-generation LUBA is rated for 80% slopes and comes in three sizes from 0.37 to 1.25 acres. The catch is cutting height: the standard version cuts 1.0 to 2.7 inches and the H version 2.2 to 4.0, so you have to choose by grass type. LUBA 3 AWD vs LUBA 3 AWD H explains which you need.

3. Mammotion LUBA mini 2 AWD: AWD for small lawns

The only AWD option we found built for small lawns, rated at 80% and 0.37 acre on the 1500 version. It has built-in 4G and a side disc that Mammotion says mows to about 2.1 inches from walls. It needs a 27-inch gap to pass between zones. LUBA mini 2 AWD vs YUKA mini 2 compares it with Mammotion’s cheaper rear-wheel-drive mini.

4. Dreame A3 AWD Pro: navigation without satellites

Dreame rates the A3 AWD Pro for 80% slopes and uses 360-degree 3D LiDAR plus binocular cameras, so it doesn’t depend on satellite signal. That suits lawns under trees. Gizmodo praised its satellite-free navigation and ease in narrow spaces, but found it more prone than the Navimow X430 to carving bald spots and wheel ruts. Cutting height tops out at 3.9 inches.

5. Sunseeker X7: a 4-inch cut with AWD

Sunseeker says the X7’s “AWD design and rugged off-road tires deliver 70% / 35° climbing capacity.” It cuts from 0.8 to 4.0 inches and uses vision AI that Sunseeker says recognizes more than 200 obstacle types. 4G is an optional module rather than built in.

6. Husqvarna Automower 435 iQ AWD: Husqvarna, without the wire

Husqvarna’s newer AWD Automower uses a satellite virtual boundary, with its EPOS reference station included, and covers 1.3 acres on systematic mowing. Husqvarna says wire-free mowers need an open sky view and an internet connection across the whole lawn. Like the 435X AWD, it stops at 2.8 inches.

7. Husqvarna Automower 435X AWD: the wired original

The only AWD robot on the list with a buried boundary wire, which works under any tree canopy but needs installing. PCWorld and Tom’s Guide both found it overkill for average yards. 435X AWD vs 435 iQ AWD covers the trade-off.

Do you actually need AWD?

Probably not if your lawn is gentle. Most two-wheel-drive robot mowers are rated somewhere between about 30% and 50%: Segway rates the Navimow X3 at 50%, Ecovacs rates the GOAT A3000 LiDAR Pro at 50%, and Husqvarna rates its 410 iQ at 45% inside the lawn. If your steepest slope is comfortably below your mower’s rating, AWD adds weight and cost without much benefit.

AWD makes sense when:

• Any part of the lawn is steeper than about 45%.
• The slope runs right to the boundary, where most mowers have a lower rating (Husqvarna’s AWD models are rated 50% at the boundary).
• The slope is often wet, shaded or soft, where grip matters most.
• The mower has to climb a bank to get between zones.

Robot mower slope ratings explained shows how to measure your steepest spot with a phone. For slopes beyond 80%, or very rough ground, a tracked mower such as the Lymow One Plus, which MowerBotLab lists at 100%, goes further still: see tracked robot mowers.

The picks

Questions

Which robot mowers have all-wheel drive?

On sale in the US, we found the Mammotion LUBA 3 AWD and LUBA mini 2 AWD, the Segway Navimow X4 (X430 and X450), the Dreame A3 AWD Pro, the Sunseeker X7, and the Husqvarna Automower 435X AWD and 435 iQ AWD.

Which all-wheel-drive robot mower handles the steepest slopes?

By stated rating, the Segway Navimow X4 at 84% (40 degrees), followed by the Mammotion LUBA 3 AWD, LUBA mini 2 AWD and Dreame A3 AWD Pro at 80%. Husqvarna’s two AWD Automowers and the Sunseeker X7 are rated at 70%.

Do I need an all-wheel-drive robot mower?

Only if your lawn is steeper than a two-wheel-drive mower’s rating. Most 2WD robot mowers are rated between about 30% and 50%, for example 50% for the Navimow X3 and 45% for Husqvarna’s 410 iQ. If your steepest spot is beyond that, or the ground is often wet on a slope, AWD is the safer choice.

Is all-wheel drive better than tracks for a robot mower?

Tracks go steeper. MowerBotLab lists the tracked Lymow One Plus at 100% (45 degrees), above any wheeled robot mower we found. AWD wheeled mowers turn more easily and cover large lawns faster.

Which all-wheel-drive robot mower cuts tallest?

The Navimow X4 (0.75 to 4 inches), the Sunseeker X7 (0.8 to 4.0 inches) and the H versions of the Mammotion LUBA 3 AWD and LUBA mini 2 AWD (2.2 to 4.0 inches). Husqvarna’s AWD models stop at 2.8 inches.

Is there an all-wheel-drive robot mower that uses a boundary wire?

Yes, the Husqvarna Automower 435X AWD. Every other AWD model on our list is wire-free, including Husqvarna’s 435 iQ AWD, which uses a virtual boundary by default.

The short version

There are now seven AWD robot mower lines in the US. For the steepest lawns, start with the Navimow X4 (84%) or the 80% group: LUBA 3 AWD, LUBA mini 2 AWD and Dreame A3 AWD Pro. For Husqvarna’s dealer support, choose the 435 iQ AWD on open lawns or the wired 435X AWD under trees. And if your lawn never goes above about 45%, a good two-wheel-drive mower will do.