Greenworks AiMowbot Review 2026: C20, C30Z, C40 and the AWD G Series Compared

Quick Answer: The Greenworks AiMowbot is Greenworks’ first wire-free robot mower line, and it is the cheapest way to get RTK-plus-camera navigation per acre from a big US tool brand in 2026. The front-wheel-drive C series runs from the C20 ($999.99, 1/2 acre) to the C30Z ($1,599.99, 3/4 acre) and C40 ($1,499.99, 1 acre), all rated for 45% (24°) slopes, but on November 5, 2026 only the C30Z was in stock on greenworkstools.com. The all-wheel-drive G series is rated for 80% (39°) slopes and launched at Walmart from $998, per Greenworks. Buy the AiMowbot for a large, open, sunny lawn at a low price per acre; skip it if your yard is mostly shaded or you want a long track record, because the line only launched in 2026.

Greenworks spent three years selling only boundary-wire robot mowers while Segway Navimow, Mammotion, Eufy and Dreame raced to eliminate the wire. Our Greenworks robot mower review covers that older Optimow line. In 2026 Greenworks finally answered with the AiMowbot: a separate brand of wire-free mowers that combine an RTK reference antenna with 3D time-of-flight cameras, sold through greenworkstools.com, Walmart and Best Buy.

Every spec below comes from Greenworks’ own US product and series pages, read on November 5, 2026, unless we name another source. Greenworks footnotes its pages with “all data are sourced from Greenworks’ laboratory”, so treat runtime, noise and accuracy figures as manufacturer claims. We don’t test mowers ourselves; this review compares published specs, prices and third-party reporting.

Greenworks AiMowbot lineup and prices (November 2026)

Prices and stock for the C models are from greenworkstools.com on November 5, 2026; the G series model list and acreage are from Greenworks’ AiMowbot hub page, and the 80% slope and 7.8 in cut come from the G series page, which Greenworks says is based on the G20AWDX. Two quirks are worth knowing. First, the 1-acre C40 lists for $100 less than the 3/4-acre C30Z, but it is sold out. Second, the C40’s own spec block contradicts itself (1 acre in the headline, 0.5 acre in one table row), so confirm the rating on the box before you buy.

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C series vs G series: what actually differs

The split is simple. The C series is for open, moderately sloped lawns; the G series is for hills and rough ground. Greenworks’ own FAQ says the C models “can handle moderate slopes” with front-wheel drive, while the G models “can go up, across, and down a 39 degree slope” and drive over ledges and tree roots thanks to all-wheel drive. If any part of your lawn is steeper than about 20 degrees, only the G series is in range.

Real coverage: how long a full pass takes

Greenworks rates each mower by lawn area, but the more useful number is how many hours of blade time a full pass needs. Using Greenworks’ own speed and cutting-width figures, here is the theoretical best case, before overlap, turns and charging stops:

Real mowers overlap their passes and slow down for turns, so actual times run longer. The point of the math is the comparison: at 0.9 mph with an 8 in blade, the C30Z needs at least 10 hours of mowing to cover the 3/4 acre it is sold for. With 50-minute recharges between runs, that is a mower working most days of the week, which is how robot mowers are meant to run anyway. Greenworks’ own advice is to mow each zone 2 to 3 times a week. The C40, with a 12 in deck at 1.6 mph, covers roughly 2.7 times more ground per hour than the C30Z, which is why its sold-out status is a real loss for big-lawn buyers.

Greenworks AiMowbot C30Z: the model you can actually buy

The C30Z is the only AiMowbot Greenworks itself had in stock on November 5, 2026. At $1,599.99 for 3/4 acre it works out to about $2,133 per rated acre, roughly 40% of what Navimow’s i210 AWD costs per acre ($1,299 for 0.25 acre). The catch is its slow 0.9 mph pace and 8 in blade, covered in the coverage table above.

RTKVision 2.0: what you are buying

RTKVision is Greenworks’ name for a familiar recipe. An RTK reference antenna in your yard corrects satellite positions to about an inch; Greenworks quotes “navigation accuracy down to 1 inch”. 3D time-of-flight cameras then handle obstacles and help hold position where satellite reception is weak, such as narrow side passages. This is the same basic idea as the Mammotion Luba’s RTK-plus-vision system and Navimow’s network-RTK-plus-vision EFLS, with one practical difference: Navimow’s i and H series can use network RTK over 4G with no antenna at all, while every AiMowbot ships with a physical antenna to mount and power.

Greenworks’ own setup notes tell you where the system is weakest:

• Antenna placement: the antenna needs at least 120° of unobstructed sky. If no spot in the yard qualifies, Greenworks suggests a roof mount with an extension kit (a 32 ft AiMowbot extension cable is $39.99).
• Tree cover: the G series page says the mower keeps mowing for up to 90 seconds after losing the satellite signal. That bridges a tree canopy you pass under; it does not make the AiMowbot a mower for a lawn that sits in shade all day. For that, look at LiDAR mowers in our LiDAR robot lawn mower guide.
• Night: night mowing is supported, but Greenworks’ FAQ warns that the vision system “may be less sensitive in low light” to small objects and the mower may struggle to find its charging station in the dark.
• Pet waste: Greenworks’ FAQ is candid that the camera “may not detect all pet waste” and will simply run over what it misses.
• Charging station: level ground (no more than 5 cm, about 2 in, front-to-back drop), about 2 m (6.5 ft) of clear space around it, and open sky in front.

The fine print

• Stock is thin. Two of the three C models on greenworkstools.com (C20 and C40) were sold out on November 5, 2026. The G series is not sold on greenworkstools.com at all.
• A new line with no track record. AiMowbot launched in 2026, so there is no multi-season reliability or software-support history yet. Greenworks’ FAQ promises that “more new features are on the way”, which also means the app is still being built out.
• Shorter warranty than the Optimow. Greenworks lists 3 years on the C models, against 4 years on its wired Optimow line.
• Not every model has 4G. Greenworks’ FAQ notes that its “R5 Vision Series” does not support 4G, while the other models do. Check the spec sheet of the exact model you buy if cellular tracking matters to you.
• Running costs are low. Greenworks recommends replacing blades after about 80 hours of cutting. Replacement packs cost $17.99 (15 blades), $49.99 (45) and $109.99 (90), the AiMowbot garage is $149.99, and a replacement charging-station power supply is $129.99, all on greenworkstools.com.

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Greenworks AiMowbot vs the alternatives

Navimow prices are from navimow.com on November 4, 2026 and the Luba mini 2 price from Mammotion’s US store on October 31, 2026, as recorded in our Segway Navimow review and Navimow H2 review.

On price per acre, the AiMowbot wins clearly. A G20AWD at its $998 launch price buys 80%-slope all-wheel drive for half an acre, which no Navimow or Mammotion model matches at that money. Where the rivals win is navigation maturity: Navimow’s antenna-free network RTK and Mammotion’s LiDAR handle shade better, and both brands have several seasons of firmware and owner feedback behind them. If you are choosing between these brands on a hill, our robot lawn mower for hills guide ranks the AWD options.

Greenworks AiMowbot by the numbers

• 80% (39°): the slope rating Greenworks gives the all-wheel-drive G series, up, down and across, matching the Mammotion Luba mini AWD’s 80% (38.6°) rating.
• $998: the launch price Greenworks announced for the cheapest G series model at Walmart in March 2026, about half the per-acre cost of most AWD rivals.
• 10.3 hours: the minimum blade time a C30Z needs to cover its rated 3/4 acre once, by our math from Greenworks’ own 0.9 mph speed and 8 in cutting width.
• 90 seconds: how long Greenworks says an AiMowbot keeps mowing after losing its satellite signal under trees.
• 200+: the number of object types Greenworks says the AI-assisted 3D camera can recognize and avoid, with a detection range of under 8 ft and a 0.1-second reroute on the G series.
• 80 hours: Greenworks’ recommended blade-replacement interval; a 15-pack of blades costs $17.99.
• 2 of 3: the number of C series models listed as sold out on greenworkstools.com on November 5, 2026 (C20 and C40); only the C30Z was in stock.

Who should buy the Greenworks AiMowbot (and who shouldn’t)

Buy the G series if your lawn has real slopes, between 25% and 80%, and is half an acre or more. At Walmart’s launch pricing it is the cheapest all-wheel-drive, wire-free mower we have tracked per acre.

Buy the C30Z if your lawn is open, sunny and between half and three-quarters of an acre, with no slopes steeper than about 20 degrees, and you want to stay with a brand whose batteries and tools you may already own. Accept that it is slow and needs long weekly run times.

Skip the AiMowbot if your lawn sits under heavy tree cover (look at our LiDAR robot lawn mower picks), if you want antenna-free installation (Navimow’s network RTK models in our Segway Navimow review), or if a long track record matters more to you than price per acre. For a broader shortlist, see our robot lawn mower without perimeter wire guide and our best robot lawn mower rankings.

The bottom line

The Greenworks AiMowbot turns Greenworks from a wire-only robot mower brand into a serious wire-free contender on price. The all-wheel-drive G series is the standout: Greenworks rates it for 80% (39°) slopes and launched it at Walmart from $998, far below what Navimow or Mammotion charge for AWD per acre. The C30Z ($1,599.99, 3/4 acre) is the only C model Greenworks had in stock in November 2026, and it is a fair buy for an open, sunny lawn as long as you accept its slow 0.9 mph pace. What you give up is maturity: a physical antenna to mount, no LiDAR for shade, and a line with less than a year of owner history. If you are cross-shopping Greenworks’ older wire mowers, our Greenworks Optimow review and Greenworks vs Worx comparison cover that side.

Sources: greenworkstools.com AiMowbot hub, C series and G series pages and the C20, C30Z and C40 product pages, plus store search for accessories (all read November 5, 2026); greenworkstools.ca product data for the C20Z (November 5, 2026); {{SOURCES}}navimow.com (November 4, 2026) and Mammotion US (October 31, 2026) for rival prices.