A novel approach using multiple-adaptive fuzzy systems in a fuzzy PDC (Parallel Distributed Compensation) based structure for integrated lateral and longitudinal control of highway vehicles for improved transient response, is presented in this paper. For comparison studies a single-adaptive fuzzy controller synthesis is also presented. These fuzzy setups are used separately for robust compensation for un-modeled dynamics, nonlinearity issues, external disturbances and uncertainties. A simulation study with veDYNA®, an industry-standard simulation package is used for validating the developed control models in the presence of robust conditions and non-catastrophic failure cases of vehicle subsystem components.