I'm the knucklehead who complained about my fuel consumption after I fitted 18" rims just about 15000k ago. The consensus was that the increased rolling resistance etc was the cause. I should have recognized that the issue also coincided with a service that included a change of gearbox oil.

If I didn't drive off my GPS which is hung high beside the rear view mirror, I maybe would have realised that the box is changing gears randomly when I'm running at 110 on the cruse control. In the past, that happens occasionally when on a steep pinch & it chooses 5th for a short burst & back to 6th, something it wouldn't do if I drove off the throttle, but that was fine & not an issue.

Anyway, yesterday, for the first time during my recent 4000 k trip I wasn't running in heavy wind & rain & I could take the opportunity to gaze at the dash. The bloody thing was occasionally dropping down to 4th & holding until I went to manual control. I have issues seeing those gear numbers because I had cataracts removed & my near vision point is beyond the dash, but the tacho going ape was a pretty large clue.

As an immediate action, I've reset the gearbox & I hope to find a friendly dealer or who might tale a look at the log to see if it can give a clue today. In that regard, does any member know somebody round Brisbane with pre-DSG auto box smarts who might hold my hand. I have a schedule of driving for the weekend & need to know where I stand.

John