Pre to post "Phase One Fix" comparison for ours is really disappointing. Really too bad as it's a nice vehicle other than the uncertainty of the Phase 2 fix and of course the current ECU rewrite. On ours low end torque off idle to 1500 rpm much better, post Fix. As it's a 6 mt much better starting in 1st gear now, 4th, 5th and 6th are down significantly on power dangerously so compared to pre fix. With 4 people in the car really noticeable down on power highway speed compared to pre fix.
Looked at aftermarket tunes and due to impending phase two fix, uncertainty of results, plus negatives of Phase one, potential voided warrenty (with tune), time delay waiting for phase two, additional mileage charges (between fix 1 and 2) we are executing the buy back. Oh ya and we've lost fuel economy too, 0.5 litres per 100 Kms and not sure on AdBlue volume usage. The straw for me is the loss in performance.
j