Is there a definitive test that can be carried out to determine whether or not my dealership has carried out the software fix without my consent? My 2010 Volkswagen Golf 1.6 TDI is due for its MoT in May. Is there an emissions figure that would confirm update had been carried out? I'm suspicious and losing trust with the dealership. The EGR failed 4000 miles after last service. it's only done 52,000 miles in total. Dealership carried out a software update during service but said it was for other issues.