Originally Posted by tjohnson1147

I just purchased a used 2015 A8L 4.0 with 18k miles. I am considering the APR tune (even being SO expensive). Can you tell me if the tune was worth it for you? Was it a substantial difference in power and driveability, etc.?

Thanks.

Originally Posted by Brian Colombo

I have a 2015 A8l with 23K miles now, I did the APR upgrade at 6k and have had zero problems with service and the warranty. Love the car and wondering if anybody has other suggestions on performance mods? Also have not been able to find 100 octane unleaded in the Minneapolis/St. Paul area, but working on that now, should be fun to tweak the APR tune up to 100 octane settings.

Originally Posted by PainDOC

I Have yet to do any mods. Been chasing some demons that my cpo came with. The dreaded 4.0t rattle and the front sway bar and bushings mainly. My ac went out as well. thankfully all is fixed now so lets see.

As far as the warranty goes my Audi dealer installs APR and says its a not really an issue. Apparently there is a ton of power left in the 4.0t. Along with our 8 speed transmissions the apr tune is conservative they say.

If my car stays problem free for a while i may consider it.