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.
- Husqvarna Automower 420 iQ — residential: typical home lawns; 9-inch deck; battery (no fuel or engine maintenance)
- Husqvarna Automower 435X AWD — 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.
- Automower 420 iQ runs 84 min per charge; Automower 435X AWD runs 145 min per charge, a 61 min difference. Stated run time is under the maker's conditions. Thick or wet grass shortens it.
- Automower 420 iQ is rated for slopes to 45%; Automower 435X AWD is rated for slopes to 70%, a 25 points difference. The slope rating is the maker's limit for safe operation, not a measure of performance.
- Automower 420 iQ ships with a 5 Ah battery; Automower 435X AWD ships with a 8 Ah battery, a 3 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.
- Automower 420 iQ cuts from 1 in (25 mm) to 4 in (102 mm); Automower 435X AWD cuts from 1.2 in (30 mm) to 2.8 in (71 mm). The cut-height range is the shortest and tallest cut the deck offers. Most lawns are kept well inside it.
- Automower 420 iQ is rated for 1.00 acres (4,047 m²) of lawn; Automower 435X AWD is rated for 0.90 acres (3,642 m²) of lawn, a 0.10 acres difference. The rated lawn area is the maker's figure under its own test conditions. Obstacles, slopes and complex shapes reduce it.
5 more differences
Other verified differences
- Automower 420 iQ lists at $3,300; Automower 435X AWD lists at $3,000, a $300 difference.
- Automower 420 iQ has a 9.4 in (239 mm) deck; Automower 435X AWD has a 8.7 in (221 mm) deck, a 0.7 in difference.
- Automower 420 iQ charges in 54 min; Automower 435X AWD charges in 45 min, a 9 min difference.
- Automower 420 iQ weighs 38 lbs (17.2 kg); Automower 435X AWD weighs 39 lbs (17.7 kg), a 1 lbs difference.
- Automower 420 iQ is rated at 62 dB; Automower 435X AWD is rated at 60 dB, a 2 dB difference.
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 | Automower 420 iQ Husqvarna · Robotic |
Automower 435X AWD Husqvarna · Robotic |
|---|---|---|
| List price | $3,300 | $3,000 |
| Engine | ||
| Power Source | battery | battery |
| Electrical | ||
| Battery Capacity | 5 Ah | 8 Ah |
| Deck | ||
| Cutting Width | 9.4 in (239 mm) | 8.7 in (221 mm) |
| Min Cut Height | 1 in (25 mm) | 1.2 in (30 mm) |
| Max Cut Height | 4 in (102 mm) | 2.8 in (71 mm) |
| Dimensions | ||
| Weight | 38 lbs (17.2 kg) | 39 lbs (17.7 kg) |
| Width | 21.4 in (544 mm) | 21.7 in (551 mm) |
| Length | 29.6 in (752 mm) | 36.6 in (930 mm) |
| Height | 11.1 in (282 mm) | 11.4 in (290 mm) |
| Robotic | ||
| Work Area | 4047 ft2 | 3642 ft2 |
| Max Slope | 45 pct | 70 pct |
| Boundary | Physical wire, Virtual wire | Physical wire |
| Run Time | 84 min | 145 min |
| Charge Time | 54 min | 45 min |
| Noise Level | 62 db | 60 db |
| Theft Protection | Yes | Yes |
Independent reference database. Specs compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.