Belgium-based VRT News has charged that Opel dealers have been modifying the software in the Zafira Tourer 1.6 diesel to change the emission behavior of the vehicles. Opel swiftly rebutted, noting that (a) service update 15-P-0444 (cited in the VRT News report) has nothing to do with changing emission levels; (b) no other recalls to achieve better emission values have been launched in 2015; and (c) service update 15-P-044 had been discussed with the German Type Approval Authority KBA.
In a statement, Opel noted that:
As highlighted many times in recent months, we reaffirm that we do not deploy any software that recognizes if the car is undergoing an exhaust emissions test. In addition, Opel announced in December that the company is voluntarily taking the next step to meet future emissions guidelines, both on CO2 and NOx. From mid-summer 2016, and in addition to the official fuel consumption and CO2 information, fuel consumption figures recorded under the WLTP (“Worldwide Harmonized Light Duty Vehicles Test Procedure”) cycle will also be published.
In addition, Opel engineers have recently started working on an initiative to implement NOx emission improvements on SCR (Selective Catalytic Reduction) diesel applications. This is a voluntary and early improvement towards the so-called RDE (Real Driving Emissions) legislation that goes into effect in 2017.