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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 520 — residential: typical home lawns; 9-inch deck; battery (no fuel or engine maintenance)
  • Sunseeker Sunseeker X5 Gen 2 — residential: typical home lawns; 9-inch deck; battery (no fuel or engine maintenance)
What’s different? The 3 differences that matter most, from the published figures.
  1. Automower 520 is rated for slopes to 45%; Sunseeker X5 Gen 2 is rated for slopes to 60%, a 15 points difference. The slope rating is the maker's limit for safe operation, not a measure of performance.
  2. Automower 520 is rated for 0.59 acres (2,400 m²) of lawn; Sunseeker X5 Gen 2 is rated for 0.50 acres (2,023 m²) of lawn, a 0.09 acres difference. The rated lawn area is the maker's figure under its own test conditions. Obstacles, slopes and complex shapes reduce it.
  3. Automower 520 has a 9.4 in (240 mm) deck; Sunseeker X5 Gen 2 has a 8.7 in (221 mm) deck, a 0.7 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 ›
what isn’t comparable

Not comparable

  • Run Time: not published for Sunseeker X5 Gen 2.
  • Charge Time: not published for Sunseeker X5 Gen 2.
  • Blades: not published for Automower 520.
  • Cut height range: not published for Automower 520.

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.

Add another (2 more fit): every robotic mower · more Husqvarna · more Sunseeker
Side-by-side specifications: Husqvarna Automower 520 vs Sunseeker Sunseeker X5 Gen 2
Spec Automower 520
Husqvarna · Robotic
Sunseeker X5 Gen 2
Sunseeker · Robotic
List price dealer quotedealer quote
Engine
Power Source battery battery
Electrical
Battery Capacity 5 Ah 5 Ah
Deck
Cutting Width 9.4 in (240 mm) 8.7 in (221 mm)
Min Cut Height — 1.6 in (41 mm)
Max Cut Height — 3.2 in (81 mm)
Blades — 6
Drive
Drive Type — AWD & Steering rear wheel
Dimensions
Weight 29 lbs (13.3 kg) 29 lbs (13.1 kg)
Width 22 in (560 mm) —
Length 28.3 in (720 mm) —
Height 12.2 in (310 mm) —
Robotic
Work Area 2400 ft2 2023 ft2
Max Slope 45 pct 60 pct
Navigation — AONavi (RTK+VSLAM2.0) / Vision AI 2.0 (Binocular+iToF)
Boundary Physical wire —
Run Time 75 min —
Charge Time 50 min —
Noise Level 61 db 60 db
Theft Protection Yes No

Independent reference database. Specs compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.

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