" petrol or diesel engines cars do best mpg in the 40-45mph range, in the highest gear,"
My 2012 Astra 1600 has to be in lower gear for upslopes at that speed, but will get over them in top at 60.
It has never achieved the fuel economy of my 1968 Escort 1800, although it’s book figures are better.
I drove for once a few days ago, and it got me very tired, like after a flying lesson.
My car is very efficient at constant speed, even on motorways. But on short urban trips, fuel consumption sky rockets. I would say about +50% per km.
alioth wrote:
Funny, I have exactly the opposite.
I nominally get around 46mpg (5.1l/100km) in my car.
Off_Field wrote:
Those fuel economy figures I assume are for steady state speeds. There can be a big hit to economy if you have a lot of braking and accelerating.
Thats the kind of efficiency I was getting before. None of this driving is on motorways, its all normal roads – traffic is bunching up etc meaning speed is actually varying from 60kph then up to 85-90kph and I think this is part of it. Dont get me wrong, my driving style also doesnt mesh with this new “bimbling along following the guy in front” as I was taught “to make progress” when driving, I dont like to sit at 65kph if I should be doing 80+kph and I do find myself overtaking others more than in the past as a result of the general slowing down – which of course has a detrimental effect on economy.
Regards, SD..
