Opel Grandland X 1.5 Diesel Probleme refer to a series of issues that have been reported by owners of the Opel Grandland X SUV equipped with the 1.5-liter diesel engine. These issues can include problems with the engine's emissions system, fuel injection system, and turbocharger, among others. In some cases, these problems can lead to decreased engine performance, increased fuel consumption, and even engine failure.