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.
- John Deere Z997M DieselZTrak Zero-Turn Mower — commercial: daily paid use and high acreage; 72-inch deck
- Hustler Turf Diesel Z — commercial: daily paid use and high acreage; 72-inch deck
What’s different? The 4 differences that matter most, from the published figures.
- Z997M DieselZTrak Zero-Turn Mower has a 37.4 hp engine; Diesel Z has a 25 hp engine, a 12.4 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.
- Z997M DieselZTrak Zero-Turn Mower weighs 2,349 lbs (1,065.5 kg); Diesel Z weighs 1,711 lbs (776.1 kg), a 638 lbs difference. Operating weight bears on trailer payload, ramps and soft turf. On its own it says nothing about build quality. What Z997M DieselZTrak Zero-Turn Mower's weight means for a trailer ›
- Z997M DieselZTrak Zero-Turn Mower has a 100.2 ci (1,642 cc) engine; Diesel Z has a 69 ci (1,130 cc) engine, a 31.2 ci difference. Displacement is the engine's size, not its output. A larger engine is not necessarily a more powerful one.
- Z997M DieselZTrak Zero-Turn Mower holds 12 gal (45.4 L) of fuel; Diesel Z holds 14.4 gal (54.5 L) of fuel, a 2.4 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.
what isn’t comparable
Not comparable
- Warranty: not published for Z997M DieselZTrak Zero-Turn Mower.
- Engine Make: not published for Z997M DieselZTrak Zero-Turn Mower.
- Fuel Type: not published for Diesel Z.
- Deck Construction: not published for Diesel Z.
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 | Z997M DieselZTrak Zero-Turn Mower John Deere · Commercial |
Diesel Z Hustler Turf · Commercial |
|---|---|---|
| List price | dealer quote | dealer quote |
| Engine | ||
| Power Source | diesel | diesel |
| Engine Make | — | Perkins |
| Displacement | 100.2 ci (1642 cc) | 69 ci (1130 cc) |
| Engine Power | 37.4 hp | 25 hp |
| Cylinders | 3 | — |
| Fuel Type | Diesel or Biodiesel (up to B20) | — |
| Engine Model | 3TNV88C | — |
| Deck | ||
| Cutting Width | 72 in (1829 mm) | 72 in (1829 mm) |
| Deck Construction | 7-Iron™ PRO: 7-gauge, 0.179-in. (4.6-mm) one-piece forged steel FastBack™ PRO: 7-gauge, 0.179-in. (4.6-mm) fabricated steel | — |
| Min Cut Height | 1 in (25 mm) | 1 in (25 mm) |
| Max Cut Height | 5.5 in (140 mm) | 5.5 in (140 mm) |
| Drive | ||
| Transmission | Hydrostatic | Tandem Hydro-Gear 21cc pumps with Parker TG wheel motors |
| Ground Speed | 11.5 mph | 11.5 mph |
| Drive Type | — | Dual Hydrostatic |
| Reverse Speed | 5 mph | — |
| Dimensions | ||
| Weight | 2349 lbs (1065.5 kg) | 1711 lbs (776.1 kg) |
| Fuel Capacity | 12 gal (45.4 L) | 14.4 gal (54.5 L) |
| General | ||
| Warranty | — | 5 yr |
Where these models differ, explained
Z997M DieselZTrak Zero-Turn Mower: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — deere.com.
Diesel Z: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — hustlerturf.com.
Independent reference database. Specs compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.