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 W520 — commercial: daily paid use and high acreage; 20-inch deck; gas powered
- Exmark Commercial 21 X-Series (ECX180 BBC) — commercial: daily paid use and high acreage; 21-inch deck; gas powered
What’s different? The 5 differences that matter most, from the published figures.
- W520 lists at $1,499; Commercial 21 X-Series (ECX180 BBC) lists at $1,999, a $500 difference. List price is the maker's own figure before tax, freight and dealer setup. Dealers set the final price.
- W520 has a Aluminium deck; Commercial 21 X-Series (ECX180 BBC) has a die-cast aluminum deck.
- W520 has a published top speed of 3.7 mph; Commercial 21 X-Series (ECX180 BBC) has a published top speed of 4.2 mph, a 0.5 mph difference. Top speed is the maker's maximum in transport. Mowing speed is lower and depends on grass, terrain and the deck.
- W520 has a 20 in (508 mm) deck; Commercial 21 X-Series (ECX180 BBC) has a 21 in (533 mm) deck, a 1 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 ›
- W520 weighs 112 lbs (50.8 kg); Commercial 21 X-Series (ECX180 BBC) weighs 117 lbs (53.1 kg), a 5 lbs difference. Operating weight bears on trailer payload, ramps and soft turf. On its own it says nothing about build quality. What W520's weight means for a trailer ›
1 more difference, calculated figures and what isn’t comparable
Other verified differences
- W520 has a 4.6 hp engine; Commercial 21 X-Series (ECX180 BBC) has a 4.5 hp engine, a 0.1 hp difference.
Calculated by MowerFacts
- W520 works out to 0.6 acres/hour; Commercial 21 X-Series (ECX180 BBC) works out to 0.7 acres/hour, a 0.1 acres/hour difference. Calculated by MowerFacts from deck width and the published top speed at 80% efficiency; it is not a manufacturer figure, and real mowing is slower.
Not comparable
- Fuel Capacity: not published for W520.
- Drive System: not published for Commercial 21 X-Series (ECX180 BBC).
- Discharge: not published for Commercial 21 X-Series (ECX180 BBC).
- Cut height range: not published for W520.
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 | W520 Husqvarna · Commercial |
Commercial 21 X-Series (ECX180 BBC) Exmark · Commercial |
|---|---|---|
| List price | $1,499 | $1,999 |
| Engine | ||
| Power Source | gas | gas |
| Engine Make | Kawasaki | Kawasaki FJ180V |
| Displacement | 10.9 ci (178.6 cc) | 10.9 ci (179 cc) |
| Engine Power | 4.6 hp | 4.5 hp |
| Engine Model | FJ180 KAI | — |
| Deck | ||
| Cutting Width | 20 in (508 mm) | 21 in (533 mm) |
| Deck Material | Aluminium | die-cast aluminum |
| Discharge | Collection/BioClip®/Rear discharge | — |
| Cut Positions | 9 | — |
| Min Cut Height | — | 1 in (25 mm) |
| Max Cut Height | — | 4.5 in (114 mm) |
| Drive | ||
| Ground Speed | 3.7 mph | 4.2 mph |
| Drive System | Self-propelled, variable speed | — |
| Dimensions | ||
| Weight | 112 lbs (50.8 kg) | 117 lbs (53.1 kg) |
| Fuel Capacity | — | 1 gal (3.8 L) |
| Length | — | 63 in (1600 mm) |
| Width | — | 22 in (559 mm) |
| Height | — | 38 in (965 mm) |
Where these models differ, explained
Commercial 21 X-Series (ECX180 BBC): Specs verified against the manufacturer spec sheet on Jun 6, 2026 — exmark.com.
Independent reference database. Specs compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.