Should my Audi A4 Allroad have the emissions fix?

I have just received a recall for my Audi A4 Allroad to have the NOx fix. The letter clearly states that following the modification there will be "no negative impact on engine performance, maximum torque, fuel consumption, noise and CO2 emissions". This statement is at odds with your recent comment that owners, having had the modifications carried out, are finding "a decrease in drivability, with the usable torque coming in at 300rpm higher than before".

Asked on 25 January 2017 by Alasdair Morrison

Answered by Honest John
The statement from Audi amounts to a guarantee, but it is not the experience of a lot of readers with this engine. So have the work done and if it affects the car, take it back to the dealer, demand that he fixes it and demand that he keeps you mobile in an equivalent car until he has. If he refuses, sue him for the value of your car.
Similar questions
I bought a Volkswagen Scirocco from a private seller in October 2016. The car was fully serviced and appeared to be in good condition. The other day Volkswagen did the emissions update and it completely...
My wife has a 2012 Volkswagen Golf TDI 1.6. She specifically asked the Volkswagen garage not to apply the EA189 emissions fix when the car had its service and MoT. However, it appears that they have applied...
I had the emissions update on my SEAT Ibiza 1.6 TDI Sportrider. Eight weeks later, the turbo blew. SEAT tried to blame me by saying there was too much engine oil. I got an oil sample done and the oil was...
Related models
As good to drive as standard A4 Avant but with quattro four-wheel drive and raised ground clearance. Ideal for towing. Refined and well built.
 

Ask Honest John

Value my car