The Estonian sits one point behind second-placed driver Elfyn Evans in the title fight despite a tough Safari Rally Kenya where he and co-driver Martin Järveoja were forced to carry out two mid-stage wheel changes.
Millener told WRC.com: “There’s no doubt this was a tough Safari, of course it was. You only have to look at the transmission issues going on for some, the loss of rear wings, body parts and bumpers for others and the general rate of attrition.
“Personally, in terms of mechanical reliability, we had a good event. We certainly didn’t have any of the major issues some of the others had.