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.
- Ferris 300S Zero Turn Mower — commercial: daily paid use and high acreage; gas powered
- Scag Liberty Z — commercial: daily paid use and high acreage; 36-inch deck; gas powered
What’s different? The 2 differences that matter most, from the published figures.
- 300S Zero Turn Mower uses a Kawasaki® FR651V 21.5hp engine; Liberty Z uses a Kawasaki® FR Series engine. The engine maker builds the engine; the mower maker chooses the model, rating and fit, so the badge alone does not settle output or longevity.
- 300S Zero Turn Mower lists at $5,279; Liberty Z lists at $5,599 to $7,399, a $320 difference. List price is the maker's own figure before tax, freight and dealer setup. Dealers set the final price.
what isn’t comparable
Not comparable
- Cutting Width: not published for 300S Zero Turn Mower.
- Engine Power: not published for 300S Zero Turn Mower.
- Voltage: not published for Liberty Z.
- Weight: not published for 300S Zero Turn Mower.
- Ground Speed: not published for 300S Zero Turn Mower.
- Fuel Capacity: not published for 300S Zero Turn Mower.
- Warranty: not published for Liberty Z.
- Transmission: not published for Liberty Z.
- Fuel Type: not published for Liberty Z.
- Drive System: not published for 300S Zero Turn Mower.
- Start Type: not published for Liberty Z.
- Cut height range: not published for 300S Zero Turn Mower.
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 | 300S Zero Turn Mower Ferris · Zero-Turn |
Liberty Z Scag · Zero-Turn |
|---|---|---|
| List price | $5,279 | $5,599–$7,399 |
| Engine | ||
| Power Source | gas | gas |
| Engine Power | — | 18 hp |
| Engine Make | Kawasaki® FR651V 21.5hp | Kawasaki® FR Series |
| Fuel Type | Gas | — |
| Cylinders | 2 | — |
| Start Type | Electric | — |
| Electrical | ||
| Voltage | 651 V | — |
| Deck | ||
| Cutting Width | — | 36 in (914 mm) |
| Min Cut Height | — | 1.5 in (38 mm) |
| Max Cut Height | — | 4.5 in (114 mm) |
| Deck Construction | 12-gauge, Fabricated | Dual-plate cutter deck constructed of 2 steel plates. Reinforcement plate at cutter deck spindles. |
| Drive | ||
| Transmission | Dual Hydro-Gear® ZT-2200® transaxles with 7" cooling fans | — |
| Ground Speed | — | 7 mph |
| Drive Tire Size | — | 20″ x 8″-10″ (36″)20″ x 10″-8″ (42″, 48″ and 52″)20″ x 10″-10″ (61″) |
| Reverse Speed | — | 5 mph |
| Drive System | — | 36″ and 42″ models: Hydro-Gear ZT-2800 Transaxle48″, 52″ and 61″ models: Tuff Torq TZ450 Transaxle |
| Dimensions | ||
| Weight | — | 555 lbs (251.7 kg) |
| Fuel Capacity | — | 3.5 gal (13.2 L) |
| Commercial / Pro | ||
| Seat Type | — | Padded with arm rests, adjustment forward and back (tools required)(no armrests on 36″ and 42″ models) |
| General | ||
| Warranty | 3 yr | — |
Where these models differ, explained
Liberty Z: 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.