Riding & Robot Mowers
Husqvarna Automower 410 iQ vs 435X AWD
The cheaper machine cuts wider and tells you more. The dearer one climbs almost twice as steep. Neither of those is the surprising part.
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We have not tested these units. Every spec on this page comes from the manufacturer's own documentation and is linked to it. Every computed figure is arithmetic you can redo. Prices are checked daily — last verified September 27, 2026. Here is exactly how we pick.
Two robots from the same maker, and the expensive one is not simply the better one. The 435X AWD is built for ground the 410 iQ cannot stand on. Everywhere else, the cheaper machine cuts wider, adjusts higher and publishes more about itself.
The short answer
The two spec sheets, side by side
| Spec | Automower 410 iQ | Automower 435X AWD | Advantage |
|---|---|---|---|
| Working area | 0.5 acre (+/-20%) | 0.9 acre (+/-20%) | 435X, by 80% |
| Max slope, inside | 45% (24.2 degrees) | 70% (35 degrees) | 435X |
| Max slope, at boundary | 15% (8.5 degrees) | 50% | 435X, by far |
| Cutting width | 9.4 in | 8.7 in | 410 iQ |
| Cut height | 1-4 in | 1.2-2.8 in | 410 iQ |
| Mow time per charge | 84 min | 145 min | 435X |
| Charge time | 108 min | Not published | 410 iQ (publishes it) |
| Duty cycle | 44% (our arithmetic) | Not computable | 410 iQ |
| Drive | Standard | All-wheel drive, pivoting rear body | 435X |
| Boundary | Physical wire or virtual (EPOS) | Physical wire | 410 iQ |
| Noise | 62 dB(A) | Not published | 410 iQ (publishes it) |
| Weight | 38 lb | 39 lb | Tie |
| Warranty | 4 years | Not published on the page we cite | 410 iQ |
Transcribed from Husqvarna's own product pages for each model. Percent-to-degree conversions are ours and are shown below.
The two slope numbers, and why the second one decides it
Husqvarna is unusual in publishing separate limits for the slope inside the work area and the slope where the boundary runs. It is the boundary figure that disqualifies most real lawns, because a perimeter usually follows a fence, a path or a drop.
If your lawn is flat in the middle and falls away at the edges — which describes a great many gardens — the 410 iQ's generous 45% internal figure is irrelevant and its 15% boundary figure is the one that applies.
Where the cheaper machine wins
The 410 iQ cuts 9.4 inches against the 435X's 8.7, which is 8% wider, and it adjusts from 1 to 4 inches against 1.2 to 2.8. That upper figure matters: warm-season and shade-grown lawns want to be cut at 3 inches or more, and the 435X AWD cannot reach it.
And where it wins again: what Husqvarna will tell you
The 410 iQ publishes a charge time, a decibel figure and a warranty term. The 435X AWD page publishes none of the three. That is not a small thing on a machine that costs more: without a charge time you cannot compute a duty cycle, and without a duty cycle a 145 minute run time is just a number.
Who should buy the 435X AWD
Banks, terraces and anything approaching an acre. Seventy percent inside the work area is the highest published slope figure in our registry, all-wheel drive with a pivoting rear body keeps all four wheels loaded on uneven ground, and 0.9 acre is nearly twice the other machine's rating.
Buy it knowing the boundary has to be physical wire, that no charge time, decibel figure or warranty term is published, and that the cut height stops at 2.8 inches.
#ad Check the Husqvarna Automower 435X AWD price on Amazon — how we're funded.
Who should buy the 410 iQ
Half an acre, moderate slopes that stay away from the edge, and anyone who wants to cut at 3 or 4 inches. It cuts wider, adjusts higher, publishes its charge time and its noise, and gives you a virtual boundary option instead of a trench.
Buy it knowing the boundary limit is 15%, and that an irregular lawn drops the rating from half an acre to a quarter.
#ad Check the Husqvarna Automower 410 iQ price on Amazon — how we're funded.
The decision, in order
- Walk the perimeter first. Over 8.5 degrees at the edge, the 410 iQ is out regardless of everything else.
- Measure the grass. Over half an acre, the 410 iQ is out on its own rating.
- Check your mowing height. If you cut at 3 inches or above, the 435X AWD is out.
- If all three pass, buy the 410 iQ. It is cheaper and publishes more.
Both machines against the wire-free alternative are in robot mowers for hills, and the acreage question is in robot mowers for one acre.
What we cannot tell you
We have not installed either machine. Husqvarna publishes no charge time, decibel figure or warranty term for the 435X AWD, so three rows of the table above are blank on the expensive machine. Neither page publishes a battery voltage, so watt-hours cannot be computed for either. Neither publishes a ground speed or a blade replacement interval. And no maker states what an AWD drivetrain costs in runtime on flat ground, which is the figure that would settle the last question on this page.
The products discussed
Specs are the manufacturer's own and linked to the page they came from. Prices come from a live daily check; where we have no verified price we say so rather than print a stale one.
Husqvarna Automower 435X AWD
Husqvarna · Automower (self-contained) · Our score 8.7/10
#ad Price as of September 27, 2026. Prices change; we check daily. How we're funded.
A published 70% slope limit inside the work area -- 35 degrees, the steepest figure any maker prints for a robot.
Published specs
| Max working area | 0.9 acre (+/-20%) |
|---|---|
| Max slope, inside | 70% (35 degrees) |
| Max slope, at boundary | 50% |
| Cutting width | 8.7 in |
| Cut height | 1.2-2.8 in |
| Mow time per charge | 145 min |
| Drive | All-wheel drive, pivoting rear body |
| Boundary | Physical wire |
| Weight | 39 lb |
Source: Husqvarna Automower 435X AWD, husqvarna.com
A percentage grade is rise over run, so 70% is arctan(0.70) = 35.0 degrees -- which matches Husqvarna's own stated 35 degrees exactly. Worth converting because makers do not agree on units: Segway publishes 16 degrees for the Navimow, which is arctan of 0.287, or a 29% grade. Same quantity, two conventions, and a factor-of-two difference in what the machines will climb.
What the numbers favor
- 70% inside the work area, the highest published slope figure in our registry
- All-wheel drive with a pivoting body to keep all four wheels loaded
- Publishes separate limits for slopes at the boundary (50%) and inside it (70%)
- Cut height range published, 1.2 to 2.8 in
What they don't
- 0.9 acre maximum, and Husqvarna qualifies it plus or minus 20%
- No charge time published, so the duty cycle cannot be computed as it can on the 410 iQ
- Boundary wire must be buried or pegged -- no wire-free option
- 39 lb, the heaviest robot we hold specs for
your lawn is flat. AWD costs runtime and money for traction you will never call on.
How it scores
Scores are our editorial weighting of the published specs above, not a test result. They are deliberately kept out of this page's structured data.
Husqvarna Automower 410 iQ
Husqvarna · Automower (self-contained) · Our score 8.4/10
#ad Price as of September 27, 2026. Prices change; we check daily. How we're funded.
Half an acre at a 45% slope limit, and the rare robot that publishes both its mow time and its charge time so the duty cycle can be checked.
Published specs
| Max working area | 0.5 acre (+/-20%) |
|---|---|
| Area capacity | 0.25 acre irregular; 0.5 acre systematic |
| Max slope, inside | 45% |
| Max slope, at boundary | 15% |
| Cutting width | 9.4 in |
| Cut height | 1-4 in |
| Blades | 3 pivoting razor blades |
| Mow time per charge | 84 min typical |
| Charge time | 108 min typical |
| Boundary | Physical wire or virtual wire (EPOS) |
| Noise | 62 dB(A) |
| Battery | 5 Ah (voltage not published) |
| Weight | 38 lb |
| Warranty | 4 years |
Source: Automower 410 iQ, husqvarna.com
84 minutes of mowing against 108 minutes of charging is 84 / (84 + 108) = 44% of the day spent cutting. That is the second robot in our registry whose duty cycle can be computed at all -- Segway publishes 60 min run against 90 min charge for the Navimow i105N, which works out at 40%. A run time on its own tells you almost nothing; it is the pair of figures that says how much lawn a machine can actually keep up with.
What the numbers favor
- Publishes BOTH mow time and charge time, which almost no robot maker does
- 45% slope inside the installation, the same figure Husqvarna published for the discontinued 450XH
- Runs on a physical wire or a virtual one, so the boundary is not a single-choice decision
- 62 dB(A) published, and a 1 to 4 in cut height range -- neither of which the 450XH published
- 4-year warranty
What they don't
- Half an acre is 40% of what the discontinued 450XH was rated for (0.5 against 1.25)
- 15% maximum slope at the boundary is a hard constraint on where the edge can run
- Irregular lawns drop the rating to 0.25 acre, which Husqvarna publishes separately
- 38 lb is heavier than the 33.7 lb 450XH it replaces
- Battery is published as 5 Ah with no voltage, so watt-hours cannot be computed
your lawn is much over half an acre, or your perimeter itself climbs a bank. The boundary limit is 15% and the area rating drops to a quarter acre on an irregular plot.
How it scores
Scores are our editorial weighting of the published specs above, not a test result. They are deliberately kept out of this page's structured data.
Where to buy the tools on this page
Every link below is an Amazon affiliate link. We show no price we have not verified today, so where there is no live figure the link says "check price" and takes you to the listing to read it there.
Best for steep slopes
Husqvarna Automower 435X AWD
Husqvarna · Automower (self-contained)
Best published slope limit on a half acre
Husqvarna Automower 410 iQ
Husqvarna · Automower (self-contained)
#ad As an Amazon Associate we earn from qualifying purchases, at no extra cost to you. How we're funded.
Common questions
What is the difference between the Automower 410 iQ and the 435X AWD?
Which one handles steep ground?
Can the 435X AWD run without a boundary wire?
Which is quieter?
Which has the better duty cycle?
Is all-wheel drive worth it on a flat lawn?
Sources
Read next
- Riding & Robot Mowers
Above an acre the question stops being which mower and starts being how many watt-hours.
- Best robot mower for hills
Published slope limits in percent and degrees, including the separate limit at the boundary.
- Best robot mower for 1 acre
Published working area, mow time and cutting width for robots sized at or near an acre.
- Best robot lawn mower (and the limits nobody puts on the box)
Coverage, slope limit and duty cycle -- the three published numbers that decide if a robot mower fits.
- What does a robot mower cost to run?
Why robot electricity costs cannot be computed from published specs, and what bounds them.
- Seven things to measure before you buy a robot mower
Area, slope, passage width, cut height and duty cycle -- the checks that decide before you spend.