Have been enjoying my 156SW for almost three months now and adapted my driving style to the engine and also to the fuel consumption. After driving 1.6 petrol previously I was probably a bit heavy footed initially and didn't get a fuel consumption better than 44.6mpg (calculation was made by filling tank and actually it was pretty close to those numbers shown by the onboard computer). And it was despite the fact that I was driving mostly on A339 and M3 including Monday morning traffic towards London (let's say 70% of the route was outside of towns).
So I started to change the way I step on a pedal, the way I shift gear and playing with what I can do.
Result - last two trips (about 120miles each) I had 61.8mpg as an average for each trip and for the whole trip (772 miles) I got 54.5mpg on average. I wasn't able to re-check by fueling from brim to brim, so those are numbers from the computer.
Anyway. No problem for me driving like this - speed doesn't really suffer, it is acceleration that takes longer since I shift earlier and revs are in the range 1,000-1,500 only before I go to the higher gear. On the motorway it is 6th gear and revs between 1,950-2,100 mostly.
Question that I have is: what (if anything) would suffer from driving like this on my Alfa? (apart from pride probably
I assume the EGR might have crap building up, but would that assumption be right?
What about turbo? I do run it on idle for a minute or two after such trips before shutting down the engine.
any possible build up on injectors? Or actually all the crap in fuel should burn anyway? .