After Volkswagen's diesel emissions scandal snowballed into a large-scale investigation, Fiat and Opel (Vauxhall's parent company) have been summoned by German regulators to establish if there was any emissions based wrongdoing on their part.
The German transport minister Alexander Dobrindt stated that the Italian and German brands' bosses will have to meet with the Federal Motor Transport Authority (KBA). Opel is still adamant that it has not cheated emissions tests.
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In an official statement Opel said it, "once again wants to stress the fact that we do not deploy any software that recognises whether a car is undergoing an exhaust emissions test. This statement is backed by extensive tests conducted in various countries".
Fiat has not released a statement so far, but Dobrindt has specifically named Fiat as a manufacturer with models that require further tests. The KBA alleges that, during investigation, a Fiat vehicle cut out its pollution control system just after the offical test finished.
The German Government has previously claimed that the Opel (and Vauxhall) Insignia and Zafira models produce excessive amounts of NOx emissions. Vauxhall and Opel later announced a voluntary recall of the models to update affected cars.
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