Which tractor?
Tractor specs with measured PTO hp — every figure sourced
Tractor specifications with the measured power at the shaft beside the number on the brochure — because they are not the same quantity. Every figure carries its source.
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Illustration — not a photograph Massey Ferguson 130
26.5 hpClaimed at the PTO
Illustration — not a photograph Case-IH MX 100
Illustration — not a photograph Deutz-Fahr Agroplus 70
Photo: JoachimKohler-HB, CC BY-SA 4.0 via Wikimedia Commons John Deere 6910
Illustration — not a photograph SAME Golden 65 Compatto
62.9 hpMeasured at the PTO
Illustration — not a photograph Fendt Farmer 309
Illustration — not a photograph Hürlimann XN-707
Illustration — not a photograph New Holland T 7030
On record
How much power at the shaft?
The bars count 706 of the 3,232 tractors on record by horsepower at the PTO shaft: 38 measured by a laboratory, 668 as claimed. 2,526 with only an engine figure are not counted — engine power is a different quantity.
A laboratory measured every one of these. Where we also hold the maker's own engine figure, the shaft gives up about a tenth of it —where claimed and measured power differ most, and why that is transmission loss rather than exaggeration.
- <25 hp at the PTO:123 tractors
- 25–40 hp at the PTO:149 tractors
- 40–60 hp at the PTO:190 tractors
- 60–100 hp at the PTO:133 tractors
- 100–175 hp at the PTO:99 tractors
- 175–300 hp at the PTO:10 tractors
- 300+ hp at the PTO:2 tractors
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85 makes on record
- Aebi1 model
- Agco37 models
- AGCO-ALLIS39 models
- AGRIFULL24 models
- Allgaier2 models
- ALLIS-CHALMERS24 models
- BOLINDER-MUNKTELL15 models
- Brandenburger Traktorenwerke1 model
- Bührer10 models
- BUKH5 models
- Case-IH128 models
- CASE-INTERNATIONAL12 models
- Case-Steyr13 models
- Claas10 models
- County1 model
- Daimler-Benz1 model
- David Brown30 models
- Deuliewag1 model
- Deutz (KHD)50 models
- DEUTZ-ALLIS24 models
- Deutz-Fahr214 models
- Dexheimer3 models
- Doppstadt1 model
- Eicher23 models
- Ensinger Fahrzeugbau Michelstadt1 model
- Fahr53 models
- Fendt140 models
- Ferguson1 model
- Fiat166 models
- Ford115 models
- Fordson7 models
- Fordson County1 model
- Güldner36 models
- Hanomag18 models
- HELA5 models
- Hermann Lanz13 models
- Hermann Zanker KG1 model
- Hürlimann112 models
- IMR-RAKOVICA3 models
- IMT13 models
- International Harvester183 models
- J. Bautz AG1 model
- J.I. Case85 models
- John Deere157 models
- John Deere-LANZ4 models
- Josef Krümpel1 model
- Kramer24 models
- Lamborghini98 models
- Landini40 models
- Lanz37 models
- Leyland10 models
- MAN17 models
- MAN Werk München1 model
- Massey Ferguson219 models
- MASSEY-HARRIS18 models
- Massey-Harris-Ferguson1 model
- Mercedes-Benz6 models
- New Holland115 models
- New Holland-Fiat3 models
- Nuffield14 models
- OLIVER19 models
- Porsche-Diesel15 models
- Primus1 model
- Renault184 models
- RÖHR3 models
- SAME98 models
- Schlüter34 models
- SOMECA82 models
- Steyr75 models
- Steyr-Case4 models
- U.T.B SR Rumänien1 model
- URSUS33 models
- UTB21 models
- UZINA TRACTORUL2 models
- VALMET72 models
- Volvo21 models
- VOLVO-BM14 models
- VOLVO-BM-VALMET8 models
- Warchalowski13 models
- WARCHALOWSKI-MC CORMICK3 models
- WHITE65 models
- Wolfenbütteler Traktoren GmbH1 model
- Yanmar1 model
- ZETOR73 models
- Zickler1 model
Measured. Not marketed.
Why believe these numbers?
Because each one says where it came from. Where an independent laboratory has tested a tractor, its page leads with the power measured at the PTO shaft and names the test report — 232 reports on file for 189 of the 3,232 tractors on record. Where no test exists, the figure is labelled as the manufacturer’s claim, never as measured.
100%
Every figure names where it came from
157,006 stored values, drawn from 3,645 sources, each with the work, the page and the date it was read. A value with no source is not written down at all.
189of 3,232
Measured is never mixed with claimed
That many have a figure measured at the PTO shaft by a laboratory. On the rest, the power figure is labelled the manufacturer’s claim — on the figure itself, not in the small print.
232
The gap is printed, not hidden
Laboratory test reports are on file. Where one exists the page shows the brochure number struck through beside the measured one, because the difference between them is the thing a buyer is actually asking about.