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Member Since 02 Aug 2013
Offline Last Active Aug 11 2014 12:03 PM

Posts I've Made

In Topic: Ford Fiesta Ecoboost Mpg

11 August 2014 - 10:53 AM

That's a pretty impressive amount, probably about the highest I have seen. I just completed a short 2.5hr each way trip through the Benelux countries which included getting lost, some traffic and bad weather conditions. The average was about 45-50MPG, with on the way there being at the higher end of the scale - with little eco driving unless I was on the speed limit and traffic was flowing relatively normally. I get the impression the car may be tuned for UK roads (no surprise as it is the best seller across the channel) as if I sit  on the equivalent of the UK speed limit ( which is lower than the speeds here) then I get very good fuel efficiency but the minute I go up to the Luxembourg or Belgian limits I notice a drop in efficiency. Anyway if I can squeeze 50MPG out of it I'll be pleased but even more would make me happy

Rod, tuning has nothing to do with the effect of speed on mpg. It's a simple case of physics ie the faster you drive the greater the atmospheric drag. The effect is so dramatic that, say you double your speed the drag increases four fold, heavily reducing mpg.

In Topic: Ford Fiesta Ecoboost Mpg

08 January 2014 - 03:55 PM

Forgot to say I also had a 1.1 litre Panda Active that did low 50s mpg (manufacturer figure was about 56 I think) on the identical commute I do in the fiesta, although it was obviously very slow to accelerate (it needed a damn good thrashing but was still economical. I sold that and the D5 diesel volvo to downsize.


maybe ecoboost is good for town but crap on longer runs???


Remember air resistance is lower in town!

In Topic: Ford Fiesta Ecoboost Mpg

08 January 2014 - 01:48 PM

Cruise control is excellent on m/ways for improving mpg, unless there are lots of hills and traffic. When you use it you realise how much other people slow down and speed up over time for no other reason than they are not a computer but are very bored and not concentrating very hard, which is understandable. What on earth zero air resistance has to do with it is anyone's guess!?!?


Yes, but equally I could say what has love got to do with it?

In Topic: Ford Fiesta Ecoboost Mpg

08 January 2014 - 01:39 PM

I have now reset my vote to show 40 - 50 mpg.

In Topic: Ford Fiesta Ecoboost Mpg

08 January 2014 - 01:36 PM



Not many cars on board mpg readouts are accurate... so an indicated 50 mpg could be anywhere betwen 40 and 50... which is quite poor, no?


Actually, long term (not resetting av mpg) and driving without particular regard to economy on a variety of roads, the indicated average mpg has now settled to read between 44 and 45. I think that is realistic and I'm still happy with it. I can't be bothered to drive like Miss Daisy.