Our verdict
On specs, the Navimow X430 wins: steeper slopes, wider deck, lower price. Pick the 420 iQ if local Husqvarna dealer service matters more to you than the numbers.
| Husqvarna Automower 420 iQ | Segway Navimow X430 | |
|---|---|---|
| Max area | 1 acre | 1 acre |
| Max slope | 45% (24.2°) | 84% (40°) |
| Navigation | EPOS satellite RTK positioning + radar object detection | Tri-frequency network RTK + 360° VSLAM + visual inertial odometry |
| Cutting width | 9.4 in | 16.9 in (430 mm) |
| Cutting height | 1–4 in | 0.8–3.7 in (20–95 mm) |
| Price seen | $3,299.99 at Tractor Supply (US MSRP $3,499.99) | $2,499 on Navimow's US store |
Which one for your yard
- Best value for 1 acre: Segway Navimow X430. $2,499 against $3,299.99 for the same rated area.
- Hills: Segway Navimow X430. 84% (40°) against 45% (24°) on the 420 iQ.
- Mowing speed: Segway Navimow X430. A 16.9 in deck cuts a much wider strip than the 9.4 in deck on the 420 iQ.
- Dealer service and long grass: Husqvarna Automower 420 iQ. Husqvarna sells through dealers and Tractor Supply, and cuts up to 4 in.
Not sure about your numbers? Enter your lawn size and steepest slope in the fit calculator.
Questions
Which is cheaper, the Husqvarna 420 iQ or the Navimow X430?
The Navimow X430, at $2,499 on Navimow's US store against $3,299.99 for the 420 iQ at Tractor Supply when we checked.
Do they handle trees?
Both rely on satellite RTK. The X430 adds cameras for visual positioning; the 420 iQ uses radar to detect obstacles. Neither has LiDAR.
Sources
- Tractor Supply — Husqvarna Automower 420 iQ
- Lawn & Landscape — Husqvarna debuts Automower iQ series (US MSRPs)
- Navimow US — X-series
- Segway Navimow — X4 product page
Specs and prices from each model's page, checked 4 November 2026. We haven't tested these mowers hands-on.