Compare Mowers
List prices are the manufacturer’s published figures, re-checked daily; they exclude tax, freight and dealer setup.
A side-by-side reference of each model's stated specifications. MowerFacts doesn’t give opinions: where a published, spec-derived rule can separate machines we mark a Data Pick and show the rule; here, read the values and decide what fits your needs.
Best suited for
What each model is built for, from its duty class and key specs. This is a neutral reference — MowerFacts does not rank one model above another.
- Sunseeker Sunseeker X9 — residential: typical home lawns; 17-inch deck; battery (no fuel or engine maintenance)
- Husqvarna Automower 440 iQ — residential: typical home lawns; 9-inch deck; battery (no fuel or engine maintenance)
What’s different? The 5 differences that matter most, from the published figures.
- Sunseeker X9 has a 17 in (432 mm) deck; Automower 440 iQ has a 9.4 in (239 mm) deck, a 7.6 in difference. Deck width sets how much grass each pass covers. Mowing time also depends on ground speed, turns and obstacles, so a wider deck alone does not fix the job's length. Time both decks on your own lawn ›
- Sunseeker X9 is rated for slopes to 90%; Automower 440 iQ is rated for slopes to 45%, a 45 points difference. The slope rating is the maker's limit for safe operation, not a measure of performance.
- Sunseeker X9 weighs 67 lbs (30.5 kg); Automower 440 iQ weighs 39 lbs (17.7 kg), a 28 lbs difference. Operating weight bears on trailer payload, ramps and soft turf. On its own it says nothing about build quality. What Sunseeker X9's weight means for a trailer ›
- Sunseeker X9 is rated for 3.00 acres (12,141 m²) of lawn; Automower 440 iQ is rated for 2.00 acres (8,094 m²) of lawn, a 1.00 acres difference. The rated lawn area is the maker's figure under its own test conditions. Obstacles, slopes and complex shapes reduce it.
- Sunseeker X9 ships with a 8 Ah battery; Automower 440 iQ ships with a 7.5 Ah battery, a 0.5 Ah difference. Amp-hours is stored energy at the pack's voltage. Run time also depends on load, so a bigger pack lasts longer under the same conditions, not a fixed time.
2 more differences, what isn’t comparable
Other verified differences
- Sunseeker X9 cuts from 0.8 in (20 mm) to 4 in (102 mm); Automower 440 iQ cuts from 1 in (25 mm) to 4 in (102 mm).
- Sunseeker X9 is rated at 66 dB; Automower 440 iQ is rated at 62 dB, a 4 dB difference.
Not comparable
- Voltage: not published for Automower 440 iQ.
- Run Time: not published for Sunseeker X9.
- Charge Time: not published for Sunseeker X9.
- Blades: not published for Automower 440 iQ.
- Price: Sunseeker X9 is dealer quote only.
Verified means each manufacturer publishes the figure. A bigger number is only a bigger number; nothing here says which machine is better. The full specification table is below.
Which is faster on your property? › Measure your lawn once and MowerFacts times all 2 against it.
| Spec | Sunseeker X9 Sunseeker · Robotic |
Automower 440 iQ Husqvarna · Robotic |
|---|---|---|
| List price | dealer quote | $4,300 |
| Engine | ||
| Power Source | battery | battery |
| Electrical | ||
| Voltage | 42 V | — |
| Battery Capacity | 8 Ah | 7.5 Ah |
| Deck | ||
| Cutting Width | 17 in (432 mm) | 9.4 in (239 mm) |
| Min Cut Height | 0.8 in (20 mm) | 1 in (25 mm) |
| Max Cut Height | 4 in (102 mm) | 4 in (102 mm) |
| Blades | 6 | — |
| Drive | ||
| Drive Type | AWD/4WD | — |
| Dimensions | ||
| Weight | 67 lbs (30.5 kg) | 39 lbs (17.7 kg) |
| Width | — | 21.4 in (544 mm) |
| Length | — | 29.6 in (752 mm) |
| Height | — | 11.1 in (282 mm) |
| Robotic | ||
| Work Area | 12141 ft2 | 8094 ft2 |
| Max Slope | 90 pct | 45 pct |
| Navigation | AONavi™ 2.0 (nRTK + VSLAM 2.0) / 360° OmniSight™ | — |
| Boundary | — | Virtual wire, Physical wire |
| Run Time | — | 138 min |
| Charge Time | — | 54 min |
| Noise Level | 66 db | 62 db |
| Rain Sensor | Yes | — |
| Theft Protection | — | Yes |
Independent reference database. Specs compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.