In this paper we address the issue of evaluation related to the selection of CASE tools. In particular, we consider the problem of developing criteria for assessment in the light of the recently published ISO standard for evaluation and selection of CASE tools. Earlier work identified a lack of methodological support for this important phase of the evaluation process, and suggested that a Grounded Theory approach would offer a sound basis for, and insights into this phase. We report on a case study which tests this claim in the context of a complex domain: information systems development for supporting quality control in the car manufacturing industry.