RRSTDV8 wrote:

My TDV8 gives me about 18-20mpg in local driving and about 26-28mpg "on a run". That's an unmapped engine.

Done a couple of longer runs recently and found 25-27mpg for motorway driving,

17-20 round town

Not sure how the average is worked out, over what time or distance it works on

I was getting 15-17 round town by just putting the auto box into D

Which compared to the M6 that was returning 9-11 mpg over the same journey was a bit of a surprise to be honest.

I've now been using command shift for the last 3 tank fills after noticing that the auto box sits in 3rd a lot of the time and sometimes drops into 4th eventually around 28mph....

I found that I can drop it manually into 5th at 33-34 mph and with the engines torque it still pulls ok and is returning 22-25 mpg

Nick. Current : Overfinch TDV8
Gone : BMW M6 V10
Gone : BMW 535d
Gone : BMW X5 4.6
Gone : BMW M3
Gone : Merc E280

I found I could better mpg in manual sport mode on my X6

In the Sport
Average 19/20 round town
Just had remap and on a short run today got it to 26mpg at steady 75

I did get it into early 30s on a good run from Manchester to Northampton before remap but am hoping to better that after the remap “One good thing about music, when it hits you, you feel no pain.”
Current RRS Overfinch TDV8, Nissan Skyline R34 GTT, 1958 VW Splitscreen camper, 1961 VW Splitscreen Double cab pickup( now gone), Fiat 500
Gone -BMW X5 and X6, Jaguar XF, Chrysler 300c, Nissan Figaro, Nisan 350z,BMW 3 series, Merc 220d, various Fords, Mini Cooper, 3 old shape mini's, Ford Capri