Ok so I Purchased a 2019 Peugeot 3008 1.6 Diesel GT Line Premium EAT back at the end of August last year (2022). At the end of middle of december i had the "Engine Fault" & Adblue - Emmisons Fault: Starting impossible in 550mi". At the time I had no clue about the fault or what the repairs needed were so I took it into the main dealer who diagnosed the fault and said that there was a fault with the software in the ECU and the repair would be done for free. I was realy chuffed with the service from the garage I used (A main Peugeot dealer). The guy told me that if the ECU was not updated then it can ruin the Urea tank and would cost alot to repair. I felt lucky they had done this now although the car had been back to Peugeot main dealer in August to have work done so I was unsure why this was not carried out at the same time.
I drove the car for 3 or 4 weeks then the same fault cam up again

I then drove the car for 4 weeks and the lights cam back on again , I was prety much fuming by now as I was angry we had spent money one parts that clearly did NOT need repacing. I rang them and they came to collect the car and dropped me a loan car of this time. A week later I get a call from them to say that the car now needed 4 new injectors and a nox sensor at the cost of nearly £2500 , At this point I was starting to get a little miffed and , well , Frankly lost my rag a little. After a few calls back and forth my Warranty compny would only replace the 1 Injector as that was the only one that they said was faulty. They were replacing the other 3 and the nox sensor as a precorsion. This would leave me with a massive bill. At this point the garage said they would replace all the parts at no charge to myself. This was very very kind of them but as I explained they had already replaceced £1700 of parts that did not need replacing. The parts were all fitted , They tested the car and I collected it on the 17th April (Yesterday) after nearly 4 weeks. The car was filthy dirty and absolutly no fuel but it was aparently fixed.
So on my way home tonight , The same lights are back on and I am currently in tears writing this. I am completly deflated by the whole situation. I have got to call Peugeot dealer tomorrow and tell them its still not fixed.
The parts fitted at a cost of £4200 odd did not need replacing ? How much more money will it take and what are my rights as a consumer ????
I have realy had enough , The car is a beutiful drive but I have totally lost all faith in it. Have I made the biggest mistake of my life buying a 3008 ??
What do I do next ? ANy help is much apreciated, and apologies for the massive write up.
Dave.