[TonyS9]

its 90% how you drive it, the route and so on. I'm beginning to sound like a broken record, but if you want MPG you need an MPG meter. The biggest variable is the driver. Driving gently isn't going to do it, but it slightly better than hammering it everywhere.

I'm still experimenting, but this is what I've got so far (95 HPT 940 estate);

Generally stay around 50, or accelerate reasonably (say 0 on turbo guage) then coast in neutral to slow down
accelerate reasonably downhill
decelarate slightly uphill
If you are at speed (limit or 50) downhill, coast in neutral (big benefit usually)
If you want to decelerate, coast in neutral for light decleration, using engine above 2000rpm for higher braking (fuel cut off starts above 2k, and stays until 1.2k, but if you start inbetween it uses more than coasting in neutral)
Try to avoid engine braking, but its better than foot brake.
Plan ahead and avoid braking
Look out for fuel management overfueling and back off if MPG<30,
Along flat aim to achieve 40mpg, back off if not (unless heavy headwind)
Avoid wot
When not accelerating keep rpm low say <1500 (around 30mph), change up early.

I can get 37mpg average on a long journey, NA should be better with higher compression compared to turbo.