--- title: "Robot Lawn Mowers Released in 2021 (27 Models)" description: "All 27 robot lawn mowers first released in 2021, from 9 brands: lawn size, slope, noise and list price each maker claims." canonical: "https://homerobotcompared.com/robot-lawn-mowers-by-year/2021" updated: "2026-10-22" data_snapshot: "2026-10-07" --- # Robot Lawn Mowers Released in 2021 (27 Models) 27 robot lawn mowers from 9 brands first went on sale in 2021, up from 4 in 2020. The brands with the most models: Kress (7), Greenworks (5), Robomow (4), Worx (3) and Bosch (2). Claimed lawn sizes run from 2,691 to 69,965 sq ft (median 10,764). 27 use a buried wire. 10 are not sold in the US as far as we know. How the years are counted: Each robot is listed under the year it first went on sale in any market, taken from the maker or a dated source. When the US launch came in another year, the table says so. Figures are what each maker claims: we have not tested these robots. Only models with a confirmed year appear. - Largest claimed lawn: Kress KR136E Mission Mega (69,965 sq ft) - Lowest list price: Greenworks 2530102 Optimow 50 ($1,600) - Steepest claimed slope: Cub Cadet XR5 1000 (45%) - Lowest claimed noise: Gardena SILENO minimo 250 (57 dB) | Robot | Lawn (sq ft) | Slope | Guidance | Boundary wire | List price | Status | |---|---|---|---|---|---|---| | [Kress KR136E Mission Mega](https://homerobotcompared.com/md/robot-mowers/kress-kr136e-mission-mega.md) | 69,965 | 45% | Boundary wire | needs wire | | current; not sold in the US | | [Kress KR133E Mission Mega](https://homerobotcompared.com/md/robot-mowers/kress-kr133e-mission-mega.md) | 47,361 | 45% | Boundary wire | needs wire | | current; not sold in the US | | [Kress KR123E](https://homerobotcompared.com/md/robot-mowers/kress-kr123e.md) | 26,910 | 35% | Boundary wire | needs wire | | current; not sold in the US | | [Greenworks 2530102 Optimow 50](https://homerobotcompared.com/md/robot-mowers/greenworks-2530102-optimow-50.md) | 21,775 | 35% | Wire with GPS help | needs wire | $1,599.99 | current | | [Greenworks 2530002 Optimow 50H](https://homerobotcompared.com/md/robot-mowers/greenworks-2530002-optimow-50h.md) | 21,775 | 35% | Wire with GPS help | needs wire | $1,600 | current | | [Worx WR155](https://homerobotcompared.com/md/robot-mowers/worx-wr155.md) | 21,775 | 30% | Boundary wire | needs wire | | current | | [Kress KR122E](https://homerobotcompared.com/md/robot-mowers/kress-kr122e.md) | 21,528 | 35% | Boundary wire | needs wire | | current; not sold in the US | | [Robomow RK2000](https://homerobotcompared.com/md/robot-mowers/robomow-rk2000.md) | 21,528 | 45% | Boundary wire | needs wire | | current | | [Robomow RK2000 Pro](https://homerobotcompared.com/md/robot-mowers/robomow-rk2000-pro.md) | 21,528 | 45% | Boundary wire | needs wire | | current | | [Cub Cadet XR5 2000](https://homerobotcompared.com/md/robot-mowers/cub-cadet-xr5-2000.md) | 21,528 | 45% | Boundary wire | needs wire | | current; not sold in the US | | [Husqvarna Automower 415X](https://homerobotcompared.com/md/robot-mowers/husqvarna-automower-415x.md) | 16,146 | 40% | Boundary wire | needs wire | | previous; not sold in the US | | [Kress KR120E](https://homerobotcompared.com/md/robot-mowers/kress-kr120e.md) | 16,146 | 35% | Boundary wire | needs wire | | current; not sold in the US | | [Kress KR121E](https://homerobotcompared.com/md/robot-mowers/kress-kr121e.md) | 16,146 | 35% | Boundary wire | needs wire | | current; not sold in the US | | [Kress KR101E Mission Nano](https://homerobotcompared.com/md/robot-mowers/kress-kr101e-mission-nano.md) | 10,764 | 35% | Boundary wire | needs wire | | current; not sold in the US | | [Robomow RK1000](https://homerobotcompared.com/md/robot-mowers/robomow-rk1000.md) | 10,764 | 45% | Boundary wire | needs wire | | current | | [Robomow RK1000 Pro](https://homerobotcompared.com/md/robot-mowers/robomow-rk1000-pro.md) | 10,764 | 45% | Boundary wire | needs wire | | current | | [Cub Cadet XR5 1000](https://homerobotcompared.com/md/robot-mowers/cub-cadet-xr5-1000.md) | 10,764 | 45% | Boundary wire | needs wire | | current; not sold in the US | | [Greenworks Optimow 7](https://homerobotcompared.com/md/robot-mowers/greenworks-optimow-7.md) | 8,073 | 30% | Boundary wire | needs wire | | previous | | [Honda Miimo HRM70 Live (Miimo 70 Live)](https://homerobotcompared.com/md/robot-mowers/honda-miimo-hrm70-live-miimo-70-live.md) | 7,535 | 27% | Boundary wire | needs wire | | current | | [Worx WR147](https://homerobotcompared.com/md/robot-mowers/worx-wr147.md) | 7,535 | 30% | Boundary wire | needs wire | | current | | [Greenworks Optimow 5](https://homerobotcompared.com/md/robot-mowers/greenworks-optimow-5.md) | 5,920 | 30% | Boundary wire | needs wire | | previous | | [Worx WR165](https://homerobotcompared.com/md/robot-mowers/worx-wr165.md) | 5,447 | 30% | Boundary wire | needs wire | | current | | [Bosch Indego S+ 500](https://homerobotcompared.com/md/robot-mowers/bosch-indego-s-500.md) | 5,382 | 27% | Boundary wire | needs wire | | previous | | [Gardena SILENO minimo 500](https://homerobotcompared.com/md/robot-mowers/gardena-sileno-minimo-500.md) | 5,382 | 25% | Boundary wire | needs wire | | current | | [Greenworks Optimow 4](https://homerobotcompared.com/md/robot-mowers/greenworks-optimow-4.md) | 4,844 | 30% | Boundary wire | needs wire | | previous | | [Bosch Indego XS 300](https://homerobotcompared.com/md/robot-mowers/bosch-indego-xs-300.md) | 3,229 | | Boundary wire | needs wire | | previous | | [Gardena SILENO minimo 250](https://homerobotcompared.com/md/robot-mowers/gardena-sileno-minimo-250.md) | 2,691 | | Boundary wire | needs wire | | current | --- Web page: https://homerobotcompared.com/robot-lawn-mowers-by-year/2021