The plausibility of measurements is a key question for many kinds of large complex systems. In this paper we present a method of automatic measurement data plausibility assessment. Even the focus here was put on an automotive engine test bench application, the presented method can cope also with other complex systems with a large number of measurement devices included. The presented method is still in the development phase, thus its performance still did not reach the optimum. But as for the time being the obtained experimental results seams to be quite acceptable. Copyright © 2005 SAE International.