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.
- Scag Liberty Z — commercial: daily paid use and high acreage; 36-inch deck; gas powered
- Scag Cheetah II — commercial: daily paid use and high acreage; 61-inch deck; gas powered
What’s different? The 5 differences that matter most, from the published figures.
- Liberty Z lists at $5,599 to $7,399; Cheetah II lists at $13,999 to $18,999, a $8,400 difference. List price is the maker's own figure before tax, freight and dealer setup. Dealers set the final price.
- Liberty Z weighs 555 lbs (251.7 kg); Cheetah II weighs 1,392 lbs (631.4 kg), a 837 lbs difference. Operating weight bears on trailer payload, ramps and soft turf. On its own it says nothing about build quality. What Liberty Z's weight means for a trailer ›
- Liberty Z has a 18 hp engine; Cheetah II has a 36 hp engine, a 18 hp difference. Published horsepower is the maker's rating at a stated engine speed. It is a different measure from displacement, and two engines of equal rating can pull differently.
- Liberty Z holds 3.5 gal (13.2 L) of fuel; Cheetah II holds 13 gal (49.2 L) of fuel, a 9.5 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.
- Liberty Z has a published top speed of 7 mph; Cheetah II has a published top speed of 16 mph, a 9 mph difference. Top speed is the maker's maximum in transport. Mowing speed is lower and depends on grass, terrain and the deck.
3 more differences, calculated figures
Other verified differences
- Liberty Z has a 36 in (914 mm) deck; Cheetah II has a 61 in (1,549 mm) deck, a 25 in difference.
- Liberty Z uses a Kawasaki® FR Series engine; Cheetah II uses a Vanguard BIG BLOCK engine.
- Liberty Z cuts from 1.5 in (38 mm) to 4.5 in (114 mm); Cheetah II cuts from 1.3 in (32 mm) to 5 in (127 mm).
Calculated by MowerFacts
- Liberty Z works out to 2.0 acres/hour; Cheetah II works out to 7.9 acres/hour, a 5.8 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.
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 | Liberty Z Scag · Zero-Turn |
Cheetah II Scag · Zero-Turn |
|---|---|---|
| List price | $5,599–$7,399 | $13,999–$18,999 |
| Engine | ||
| Power Source | gas | gas |
| Engine Power | 18 hp | 36 hp |
| Engine Make | Kawasaki® FR Series | Vanguard BIG BLOCK |
| Deck | ||
| Cutting Width | 36 in (914 mm) | 61 in (1549 mm) |
| Min Cut Height | 1.5 in (38 mm) | 1.3 in (32 mm) |
| Max Cut Height | 4.5 in (114 mm) | 5 in (127 mm) |
| Deck Construction | Dual-plate cutter deck constructed of 2 steel plates. Reinforcement plate at cutter deck spindles. | Tri-plate cutter deck constructed of 3 steel plates totaling nearly 1/2″ of steel. Reinforcement plates at cutter deck spindles. |
| Deck Gauge | — | 7 |
| Drive | ||
| Ground Speed | 7 mph | 16 mph |
| Drive Tire Size | 20″ x 8″-10″ (36″)20″ x 10″-8″ (42″, 48″ and 52″)20″ x 10″-10″ (61″) | 24″ x 12″-12″ |
| Reverse Speed | 5 mph | 8 mph |
| Drive System | 36″ and 42″ models: Hydro-Gear ZT-2800 Transaxle48″, 52″ and 61″ models: Tuff Torq TZ450 Transaxle | Hydro-Gear ZT5400 Transaxle. Two-Speed |
| Dimensions | ||
| Weight | 555 lbs (251.7 kg) | 1392 lbs (631.4 kg) |
| Fuel Capacity | 3.5 gal (13.2 L) | 13 gal (49.2 L) |
| Commercial / Pro | ||
| Seat Type | Padded with arm rests, adjustment forward and back (tools required)(no armrests on 36″ and 42″ models) | 4-point iso-mounted mid-back mounted on operator-suspension platform |
Where these models differ, explained
Liberty Z: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — scag.com.
Cheetah II: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — scag.com.
Independent reference database. Specs compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.