John Deere Z950RZTrak Zero-Turn Mower vs Toro 4000 Series 52 in. 25.5 hp 852cc
A side-by-side spec reference for two commercial machines. Where computed productivity separates them, the faster machine is marked a Data Pick with the arithmetic shown — the tables lay out each model's stated specs so you can match a machine to your property and routes.
A side-by-side for the commercial mower John Deere Z950RZTrak Zero-Turn Mower and the commercial mower Toro 4000 Series 52 in. 25.5 hp 852cc. Open the full spec table in the compare tool ›
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.
- John Deere Z950RZTrak Zero-Turn Mower — commercial: daily paid use and high acreage; 72-inch deck
- Toro 4000 Series 52 in. 25.5 hp 852cc — commercial: daily paid use and high acreage; 52-inch deck
What’s different? The 5 differences that matter most, from the published figures.
- Z950RZTrak Zero-Turn Mower has a 72 in (1,829 mm) deck; 4000 Series 52 in. 25.5 hp 852cc has a 52 in (1,321 mm) deck, a 20 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 ›
- Z950RZTrak Zero-Turn Mower has a Hydrostatic transmission; 4000 Series 52 in. 25.5 hp 852cc has a ZT-4400 Integrated Pumps and Wheel Motors transmission. The transmission grade tracks duty rating and speed. Grade names are each maker's own and are not comparable across brands.
- Z950RZTrak Zero-Turn Mower weighs 1,423 lbs (645.5 kg); 4000 Series 52 in. 25.5 hp 852cc weighs 1,174 lbs (532.5 kg), a 249 lbs difference. Operating weight bears on trailer payload, ramps and soft turf. On its own it says nothing about build quality. What Z950RZTrak Zero-Turn Mower's weight means for a trailer ›
- Z950RZTrak Zero-Turn Mower holds 11.5 gal (43.5 L) of fuel; 4000 Series 52 in. 25.5 hp 852cc holds 10.5 gal (39.8 L) of fuel, a 1 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.
- Z950RZTrak Zero-Turn Mower has a 27 hp engine; 4000 Series 52 in. 25.5 hp 852cc has a 25.5 hp engine, a 1.5 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.
calculated figures and what isn’t comparable
Calculated by MowerFacts
- Z950RZTrak Zero-Turn Mower works out to 7.0 acres/hour; 4000 Series 52 in. 25.5 hp 852cc works out to 5.0 acres/hour, a 1.9 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
- Engine Make: not published for Z950RZTrak Zero-Turn Mower.
- Deck Material: not published for Z950RZTrak Zero-Turn Mower.
- Discharge: not published for Z950RZTrak Zero-Turn Mower.
- Start Type: not published for Z950RZTrak Zero-Turn Mower.
- Cut height range: not published for Z950RZTrak Zero-Turn Mower.
- Price: Z950RZTrak Zero-Turn Mower 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.
Productivity
| Measure | Z950RZTrak Zero-Turn Mower | 4000 Series 52 in. 25.5 hp 852cc |
|---|---|---|
| Cutting deck | 72 in | 52 in |
| Ground speed | 12 mph | 12 mph |
| Acres/hr (80%) | 4.89 | 3.53 |
| Acres/hr (100%) | 8.73 | 6.3 |
| List price | dealer quote | $11,999 |
Acres/hour computed from deck width and ground speed; 80% accounts for turns, overlap and trimming. Calculator ›
Components
| Component | Z950RZTrak Zero-Turn Mower | 4000 Series 52 in. 25.5 hp 852cc |
|---|---|---|
| Engine make | not specified by manufacturer | Kawasaki |
| Displacement | 852 cc | 852 cc |
| Engine power | 27 hp | 25.5 hp |
| Transmission | Hydrostatic | ZT-4400 Integrated Pumps and Wheel Motors |
| Drive type | not specified by manufacturer | not specified by manufacturer |
Ownership & dimensions
| Spec | Z950RZTrak Zero-Turn Mower | 4000 Series 52 in. 25.5 hp 852cc |
|---|---|---|
| Weight | 645.46 kg | 532.52 kg |
| Fuel capacity | 43.5 L | 39.75 L |
| Warranty | not specified by manufacturer | not specified by manufacturer |
| Dimensions (L×W×H mm) | not specified by manufacturer | 2311 × 1778 × 1334 |
Dealer network and dimensions not in our data are shown as "not specified by manufacturer." See the full spec sheet on each model page.
Alternatives to cross-shop
FAQ
Is the John Deere Z950RZTrak Zero-Turn Mower or the Toro 4000 Series 52 in. 25.5 hp 852cc better?
MowerFacts is a spec reference, not a review — we don't crown a winner. The John Deere Z950RZTrak Zero-Turn Mower and Toro 4000 Series 52 in. 25.5 hp 852cc are both commercial machines with their own deck widths, engines and dimensions; the tables below lay out each spec side by side so you can match a machine to your property and routes.
How many acres per hour can the John Deere Z950RZTrak Zero-Turn Mower and Toro 4000 Series 52 in. 25.5 hp 852cc mow?
At 80% efficiency the John Deere Z950RZTrak Zero-Turn Mower (72-in deck at 12 mph) covers about 4.89 acres/hour and the Toro 4000 Series 52 in. 25.5 hp 852cc (52-in deck at 12 mph) about 3.53 acres/hour, before trimming and trailering time.
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Z950RZTrak Zero-Turn Mower: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — deere.com.
4000 Series 52 in. 25.5 hp 852cc: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — toro.com.
Independent reference database. Specs compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.