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 Z554L — commercial: daily paid use and high acreage; 54-inch deck; gas powered
- Altoz XP 540 HD / 660 HD / 720 HD — commercial: daily paid use and high acreage; 54-inch deck; gas powered
What’s different? The 5 differences that matter most, from the published figures.
- Z554L has a Steel deck; XP 540 HD / 660 HD / 720 HD has a Fabricated Steel deck.
- Z554L holds 12 gal (45.4 L) of fuel; XP 540 HD / 660 HD / 720 HD holds 14 gal (53 L) of fuel, a 2 gal difference. Tank size bounds how long a machine runs between stops. Consumption varies with engine, load and speed, so hours per tank are not fixed.
- Z554L cuts from 1 in (25 mm) to 5 in (127 mm); XP 540 HD / 660 HD / 720 HD cuts from 1.5 in (38 mm) to 5 in (127 mm). The cut-height range is the shortest and tallest cut the deck offers. Most lawns are kept well inside it.
- Z554L weighs 1,215 lbs (551.1 kg); XP 540 HD / 660 HD / 720 HD weighs 1,330 lbs (603.3 kg), a 115 lbs difference. Operating weight bears on trailer payload, ramps and soft turf. On its own it says nothing about build quality. What Z554L's weight means for a trailer ›
- Z554L has a published top speed of 12 mph; XP 540 HD / 660 HD / 720 HD has a published top speed of 11 mph, a 1 mph difference. Top speed is the maker's maximum in transport. Mowing speed is lower and depends on grass, terrain and the deck.
calculated figures and what isn’t comparable
Calculated by MowerFacts
- Z554L works out to 5.2 acres/hour; XP 540 HD / 660 HD / 720 HD works out to 4.8 acres/hour, a 0.4 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
- Warranty: not published for Z554L.
- Fuel Type: not published for Z554L.
- Discharge: not published for XP 540 HD / 660 HD / 720 HD.
- Price: XP 540 HD / 660 HD / 720 HD 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 | Z554L Husqvarna · Commercial |
XP 540 HD / 660 HD / 720 HD Altoz · Commercial |
|---|---|---|
| List price | $13,999 | dealer quote |
| Engine | ||
| Power Source | gas | gas |
| Engine Make | Kawasaki | Kawasaki |
| Displacement | 52 ci (852.1 cc) | 52 ci (852 cc) |
| Engine Power | 27 hp | 27 hp |
| Cylinders | 2 | 2 |
| Engine Model | FX Series V-Twin | FX |
| Fuel Type | — | Gasoline |
| Deck | ||
| Cutting Width | 54 in (1372 mm) | 54 in (1372 mm) |
| Blades | 3 | 3 |
| Deck Material | Steel | Fabricated Steel |
| Anti-Scalp Rollers | Yes | Yes |
| Min Cut Height | 1 in (25 mm) | 1.5 in (38 mm) |
| Blade Tip Speed | — | 18501 ft/min (5639 m/min) |
| Discharge | Collect/Mulch/Side discharge | — |
| Cut Positions | 16 | — |
| Max Cut Height | 5 in (127 mm) | 5 in (127 mm) |
| Drive | ||
| Transmission | Hydrostatic | Hydrostatic |
| Ground Speed | 12 mph | 11 mph |
| Drive Tire Size | — | 24" |
| Dimensions | ||
| Weight | 1215 lbs (551.1 kg) | 1330 lbs (603.3 kg) |
| Fuel Capacity | 12 gal (45.4 L) | 14 gal (53 L) |
| Length | 81 in (2057 mm) | 83.5 in (2121 mm) |
| Height | 21 in (533 mm) | — |
| Commercial / Pro | ||
| Seat Type | Premium, suspension | — |
| General | ||
| Warranty | — | 3 yr |
Where these models differ, explained
Z554L: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — husqvarna.com.
XP 540 HD / 660 HD / 720 HD: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — altoz.com.
Independent reference database. Specs compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.