DLG e.V. - Vehicle technology and electronics

Vehicle technology and electronics

In the field of vehicle technology, tractors are examined and tested under various aspects according to international standards and the DLG’s own standards. User protection is the first priority. As a technical service designated by the German Federal Motor Transport Authority and the OECD (Organization for Economic Cooperation and Development), the DLG Test Center conducts safety tests of components (e.g. roll-over protection devices and cabs of tractors, construction machinery and trucks) as well as tests to determine the field of vision or noise and vibration loads on the complete vehicle. Material and continuous load tests on components and systems as well as evaluation of the electronic functionalities of steering systems and ISOBUS round off the spectrum of tests.

The performance and consumption data of tractors are determined under standardized and reproducible conditions. In accordance with OECD Tractor Code 2, the performance is recorded on the power take-off output test stand and the draught power measuring vehicle. The crowning service is determination of the energy efficiency of tractors within the framework of a DLG PowerMix test simulating practical on-farm applications.

The DLG vehicle technology engineers are represented in various national and international committees to offer support and technical advice to the German Federal Ministry of Food and Agriculture (BMEL) on the German position within the OECD Tractor Code.

Here, the practical experience gained from agricultural work and the testing of agricultural machinery and equipment is incorporated into the production of the Expert Knowledge Series, standards and regulations.



DLG PowerMix – The premium class for determining the energy efficiency of tractors

On the basis of typical tractor workloads in practice, the DLG Test Commission has defined 14 load cycles, under which the fuel and AdBlue consumption, the performance and ultimately the energy efficiency of the overall vehicle are determined. The load cycles reflect typical field and transport work in both the partial and full load range. Tests cover pure pulling work, e.g. with a plough or cultivator, as well as mixed work using the PTO shaft and the hydraulic system in addition to the drive.

This is the case, for instance, during field work with a rotary harrow, mower, manure spreader or baler. Heavy and light transport tasks are also reproduced to check road efficiency in order to obtain an overall picture of the tractors’ energy efficiency in practical use under reproducible conditions.

Test reports: www.DLG-Test.de/powermixapp

Continuous load tests

Furthermore the DLG conducts continuous load material tests, especially on hay machinery of large working width like rakes and tedders on a circular runway or on PTO protection devices.

Safety tests

Testing fields within the area of safety:

  • driver safety devices like roll over protective structures (ROPS, e. g. rollover bars or safety cabs)
  • devices for the protection of the driver against falling objects (FOPS)
  • protection against penetrating objects (OPS)
  • tests of seats and seatbelts
  • PTO shaft protective devices
  • protective cloths, especially for mowers
  • functional safety

More information on cabin tests can be obtained on this site.


Within the field of electronics the DLG engineers test ISOBUS- and ISOagriNET-modules and -systems on conformity with national, international as well as special DLG-Standards. Also automatic steering systems for tractors and other self-propelled machinery are subjected to the hard DLG tests.

Download catalogue of test stations

A listing of all the test capabilities within the testing field of vehicle technology and electronics will be provided for download shortly. Until publication please contact the given person in charge.

DLG-APPROVED in single criteria

Andreas Ai

Tel.: +49(0)69/24 788-640

working areas:
vehicle technology, tractors