Go faster for better MPG

[NickDE]

What got me was that driving quicker and (seemingly) less economically, I got more MPG!

Internal combustion engines get best efficiency at about 2/3 of max power. So either give plenty of gas or come off the gas completely - the pulse and glide method. And avoid braking as much as possible. One hell of a lot more fun than the 'don't accelerate and drive everywhere in top gear' method. If you're scared of acceleration buy a 1 litre Fiesta.

Best efficiency is very different from best economy, max mpg is usually attained when the foresight & vision of an eagle is combined with the light foot of a ballet dancer
Rob

Best economy comes when you run your engine at best efficiency for as much of the journey as possible. That's what hybrids do - either run the engine and make full use of it to drive car and charge battery, or switch it off and run on electrics. Combined with the light foot of a ballet dancer on the brakes - which just convert fuel generated kinetic energy to heat and dump it to the atmosphere.
If you want to drive using only a fraction of the capability of the engine, buy a smaller engine in the first place. Maybe a four pot E89

 

[Paulr]

I do drive with mechanical appreciation and fuel efficiency in mind a lot of the time, but I love the straight six engine and the power it provides, and when I do stick my foot down I want to use all the power I can, and I am prepared to pay for that in mpg. Just to repeat, I go faster & got more mpg (that is a plus in my book!), I never said I wanted a smaller engine or anything. In fact, the more I drive this car the more I am impressed and enjoy it.

 

[Anonymous]

I drove from near Oxford to Hockley circus (middle of Birmingham) 2 weeks ago, 73miles and got 39mpg door to door. Had the cruise set to 70mph on the motorway. For an old car with a big engine I was impressed (and pleased). No doubt would have gone over 40 if I'd being doing 60, but life's too short for that.