Robot mowers head-to-head

Husqvarna Automower 420 iQ vs Segway Navimow X350

Both models on one scale, every figure traced to its manufacturer datasheet. Bar length means the same thing here as on every other page of the site.

Automower 420 iQ vs Navimow X350, to scale
  • Automower 420 iQ
  • Navimow X350
Work areamore is better
43,560sq ft
65,340sq ft
  • Automower 420 iQ: Published as lawn size 1 acre plus or minus 20 percent (43560 sq ft). Basis varies by layout: area capacity 0.5 acre for irregular areas, 1 acre with systematic mowing.
  • Navimow X350: Published as Recommended Mowing Area of 1.5 acres, converted to 65,340 sq ft. This is a recommended (not maximum) area basis. Mapping footnote: supports map storage up to 1.2x the recommended mowing area.
Max slopemore is better
45%
50%
  • Automower 420 iQ: Published as maximum slope performance inside installation, 45 percent. Slope at the boundary is limited to 15 percent.
  • Navimow X350: Published as Maximum Slope Ability 50% (27 degrees). Maximum slope performance at the boundary is lower, 25% (14 degrees).
Cutting widthmore is better
9.4in
9.3in
Runtimemore is better
84min
200min
  • Automower 420 iQ: Published as typical mow time on one charge; the charge time is the published typical charging time.
  • Navimow X350: 200 min is Navimow's published Full Charge Mowing Time and 80 min the Charging Time from the X3 spec table; Navimow's product-page charge and runtime footnotes are described as based on internal laboratory testing.
Noiseless is better
62dB
60dB
  • Automower 420 iQ: Published as sound level perceived in dB(A).
  • Navimow X350: Published as Noise Level 60 dB(A) in the X3 spec table; the product page markets 60 dB(A) with a test-condition footnote. Basis (pressure vs power) not explicitly stated.
Warrantymore is better
4yr
3yr

Husqvarna Automower 420 iQ

$3,299.99as of 2026-07-05

A wire-free EPOS satellite mower rated for lawns up to 1 acre, with a published 45 percent slope capability inside the installation and radar based object detection. Husqvarna backs the unit with a 4 year US and Canada warranty on the mower.

Best for Wire-free mowing on lawns up to about 1 acre.

Segway Navimow X350

$2,799as of 2026-07-05

The X350 pairs wire-free RTK plus vision navigation with a 1.5 acre recommended capacity, 50% slope ability, and a fast 80 minute recharge that yields up to 200 minutes of runtime per the maker's lab-tested figures. A 3 year warranty, IP66 rating, and 60 dB(A) standard-mode noise round out a strong published spec sheet for larger suburban lawns.

Best for Large lawns up to 1.5 acres with slopes.

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