Best for
- Lawns up to 1 acre
- 54-minute fast charge
- Wire-free EPOS setup
Husqvarna Automower 420 iQ
The 420 iQ doubles the 410 iQ's area to a full acre, with the same EPOS navigation and a faster charge.
Specs verified on
Sold in the United States
Area0.99 acres (43,056 sq ft)
Slope45 %
Indicative price3 241 €
10-second verdict: Husqvarna Automower 420 iQ
Watch-outs
- High price
- Radar coarser than a camera
- Borders need trimming
- EPOS sensitive under trees
- Some specs still need stronger manufacturer or manual evidence.
- No isolated official manual for this page yet: verify manufacturer documentation before buying.
Data & Reliability
- 1 public technical source
- consolidated external review synthesis
- 38 useful specs shown
- Confidence score: fair, a few specs still need confirming
Quick analysis
The mid iQ for a large lawn, if you accept the Husqvarna price and radar rather than a camera.
SpecsLib Calculated Metrics
These indicators are computed by SpecsLib from official manufacturer specs. They do not appear as such in any brand's documentation.
Area / Price13 sq ft/€
Square metres covered per euro spent. The higher the ratio, the better the area-to-price value.
Mowing density30,754 sq ft/hr
Theoretical surface covered per hour of mowing. Computed from the manufacturer's official specs.
Slope score45/100 — Good
Normalised score based on the declared maximum slope (45%). 100 = mechanical limit, 0 = flat ground.
Price history
Technical specs
Underlined terms open a plain-language explanation of navigation, detection and ecosystem technologies.
| Recommended area | 0.99 acres (43,056 sq ft) |
|---|---|
| Systematic mowing area | 0.99 acres (43,056 sq ft) |
| Irregular mowing area | 0.49 acres (21,528 sq ft) |
| Launch year | 2026 |
| Maximum slope | 45 % |
| Boundary slope | 15 % |
| Cutting height | 25-100 mm |
| Cutting width | 9.4 inches |
| Cutting system | Pivoting razor blades |
| Drive system | Rear-wheel drive |
| Battery | 5 Ah |
| Replaceable battery | No |
| Charge time | 54 min |
| Runtime per charge | 84 min |
| Dimensions | 29.6 x 21.4 x 11.1 inches |
| Navigation | EPOSEPOSHusqvarna's satellite-based virtual boundary system. + RTKRTKHigh-precision satellite correction, usually with a base station or antenna. + GPS |
| Perimeter-wire free | Yes |
| Obstacle avoidance | Radar object detectionObstacle detectionThe mower's ability to see an object in its path and go around it instead of pushing it. |
| Connectivity | App + Wi-Fi + Bluetooth + 4G + Amazon Alexa + Google Home |
| Smart home | Amazon Alexa + Google Home |
| Ecosystem | Automower Connect + EPOSEPOSHusqvarna's satellite-based virtual boundary system. |
| Boundary setup | EPOSEPOSHusqvarna's satellite-based virtual boundary system. via Husqvarna Cloud |
| Mowing modes | Systematic + Zone Control + Secondary area + Stay-out zones + Smart Routine |
| Dual map | Yes |
| Remote camera view | No |
| Patrol mode | No |
| Human detection | No |
| Two-way audio | No |
| Anti-theft / tracking | GPS tracking + Geofence alerts + PIN lock + Alarm + Lift alert + Tilt sensor |
| Blade change | No |
| Charge current | 4.2 A |
| Rain sensor | No |
| Noise level | 62 dBNoise level (dB)Noise produced while running, in decibels, on a scale that is not linear. |
| Water protection | IPX5IPX ratingWater-resistance rating, not a blanket immersion guarantee. |
| Weight | 37.9 lbs |
| Multi-zone management | Yes, count not published |
| Edge distance | 5.9 inches |
| Warranty | 4 years |
What the tests say
The Automower iQ line is Husqvarna's wire-free range for North America: EPOS satellite navigation and radar object detection, no camera. Robot Mower Lab highlights the radar's all-weather reliability, working in the dark, in fog or under grass clippings where a camera goes blind, but calls the pricing aggressive next to Segway and Mammotion rivals, with a narrower 24 cm cut and a 45% slope limit that AWD machines exceed.
Strengths reviewers highlight
What public reviews and owner feedback most often praise.
- Radar fiable par tout temps (nuit, brouillard, herbe coupée) là où une caméra est aveuglée
- Fiabilité mécanique de la marque la plus vendue du marché US
- Sans fil EPOS, garantie US de 4 ans et une année de lames offertes
- Étanchéité IPX5, nettoyage au jet d'eau
Limits found in reviews
Consolidated watchouts identified by SpecsLib to help evaluate fit for your lawn and budget.
- Tarif élevé face aux concurrents Segway et Mammotion à surface égale
- Largeur de coupe de 24 cm, plus étroite que plusieurs concurrents
- Pente limitée à 45 %, sous les modèles AWD concurrents
- EPOS satellite : nécessite une vue dégagée du ciel
Internal editorial synthesis, rewritten and consolidated without outbound links to analysed publications.
Frequently Asked Questions
What is the maximum area for the Automower 420 iQ?
It is designed to mow up to 0.99 acres (43,056 sq ft).
What is the maximum slope handled by the Automower 420 iQ?
This model can handle slopes up to 45%.
Does the Automower 420 iQ require a boundary wire?
No, this model operates without a wire (virtual navigation).
What is the area-to-price ratio of the Husqvarna Automower 420 iQ?
According to the SpecsLib calculation, the Husqvarna Automower 420 iQ delivers 13 sq ft/€ — the square metres covered per euro spent. Square metres covered per euro spent. The higher the ratio, the better the area-to-price value.
What is the mowing density of the Husqvarna Automower 420 iQ?
SpecsLib computes a mowing density of 30,754 sq ft/hr for this model. Theoretical surface covered per hour of mowing. Computed from the manufacturer's official specs.
What is the slope score of the Husqvarna Automower 420 iQ?
SpecsLib assigns a slope score of 45/100 — Good to the Husqvarna Automower 420 iQ. Normalised score based on the declared maximum slope (45%). 100 = mechanical limit, 0 = flat ground.
Alternatives to compare
If this model is not the right compromise, these mowers are close by area, brand or budget.
Mammotion LUBA 3 AWD 5000
LUBA 3 AWD 5000 is built for large, demanding lawns with AWD traction, wide cutting and multi-sensor navigation.
Dreame A3 AWD Pro 3500
The Dreame A3 AWD Pro 3500 targets complex large lawns with AWD, 3D LiDAR, binocular vision, dual maps, advanced mowing modes and sub-3 cm edge handling.
Roborock RockMow Z150
RockMow Z150 is a RockMow Z1 variant built for around 5,000 m2, with Sentisphere navigation and AI-powered mapping.
Technical sources
Latest verification of official and technical sources.
- Husqvarna US - Automower 420 iQ 2026-07-30
Husqvarna Automower 420 iQ3 241 €
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