
Uniform methodology – fair, reproducible results.
Uniform methodology – fair, reproducible results.
DTI Test Protocol
Deutsches Test Institut evaluates products and services using a standardized, modular procedure. With our new test protocol, we offer maximum comparability, consumer-oriented evaluations and the highest level of test depth.
Version: 3.0
As of: 01.08.2025
Overview of test categories
10%
10%
15%
15%
20%
10%
20%
20%
20%
20%
20%
20%
** A “(–)” indicates a checkpoint that is not relevant for the tested product and therefore remains neutral — it does not affect the rating.

Grading key
The weighted results of all test categories are aggregated to a total score at module level (product test or service check). This is converted into a percentage (0–100%) and assigned a verbal quality grade. Important: the two modules are evaluated independently. A single overall grade is only formed within a module.
The percentage is calculated as (points achieved / points possible) × 100. For details, please refer to the document “DTI Test Protocol” in the download area.

