Post your MPGs

rodenal

Civic diesel, remapped to approx 180bhp from 140

Work & back each day - total of about 40 miles with about 30% being A road / town driving average of anwhere between 48 & 53mpg

Town driving only 38-42mpg

Friday driving 30mpg

400 mile motorway trip, almost totally clear and mixed speeds, around 55mpg

All in over the last 8k miles the car claims i've averaged 47.5mpg, I've adjusted the mpg-ometer so it's relatively accurate (to within 1 or 2 mpg)

billa_champion

Nissan Micra 1.0 2001. On average about 260 miles a month. Mostly local driving. 30-31 MPG. Shocking!

I might as well trade in the missus' Micra and get something substatntial after reading other people's MPG!

Lum

andygb wrote: »

I am amazed by all the people who calculate their MPG using the on car computer, because they are rarely correct.

I used that technique on the 1993 car as a matter of curiosity. For the Mondeo I don't really care enough to actually calculate it, so just posted the figure from the computer.

Strider590

Worth noting as per a previous post, that your onboard MPG display is very often highly inaccurate..... BUT if you have an OBD2 interface, it's possible to get a very accurate reading directly from the cars ECU.

basill wrote: »

2005 Vectra 1.8 petrol. Company car so initially driven with no care whatsoever. This resulted in low 30s mpg. Petrol costs rising faster than fuel rate caused a rethink and soon I was able to squeeze an extra 80-100 miles out of a full tank!

Best was 42mpg, mostly A roads and motorways driving with very light foot!

^^^ Similar to myself, I average 34mpg, but will push 40+mpg cruising at 70mph on a motorway.

Which (at current prices) at 34mph, takes my fuel costs (just work travel) to around £33 a week..... This would be £22 a week if my car did 50mpg. Which just goes to show how it's NOT worth buying a new car just to get a little bit better fuel economy.

jaydeeuk1

Toyota iq 1.33

Derby to newcastle and back with plenty left in tank 51.2 mpg @60-80 mph some traffic
thrashing around hilly derbyshire/a6/a38 , 6000 rpm gear changes etc 39 mpg

figures are within 0.5 of that of the onboard computer (which over reads)

Idiophreak

2010 Honda Jazz 1.4

Do 20 miles (mainly dual carriageway) to work and back, plus a couple of longer motorway journeys per week.

1) Driven fast - c40mpg.
2) Driven sensibly (70mph max) c48mpg
3) Driven gently (56mph max) - 55mpg
4) Long drives - 60mpg

Been a long time since I could afford to do anything but number 3.

Notmyrealname

Lum wrote: »

Do you drive at 56mph everywhere or something?

Forgot to add that mine is a 2010 model.

Mine is a 2010 model - Jan 2010. Average speed according to the trip computer is 37MPH.

I did an economical driving course as part of an induction with a past employer.

Notmyrealname

Trebor16 wrote: »

If you are going by the trip computer then they are optimistic on the Mondeo. I had a 2.0 TDCi provided as a courtesy car and had the use of it for a week. I did a run up to the Yorkshire Dales and then across to the Lake District and then back home to Hertfordshire. The trip computer was showing an average of 46mpg for the first tankful but when working it out based on how much I put in the true average was just over 39mpg. The second tankful showed as 48mpg on the computer but a real 42mpg.

Mine is approximately 2% out. My previous MK3 was 5% out. I always fill to the first click, usually at one of three petrol stations, and reset the trip computer every time. No idea why I do this but I've been doing it for about 5 years now.

With my MK3 Mondeo we did a trip to France. 1500 mile round trip with two adults, two kids and luggage doing legal speed limit. Averaged 58MPG on that trip.

Notmyrealname

andygb wrote: »

I am amazed by all the people who calculate their MPG using the on car computer, because they are rarely correct.
My simple method, used by many others on various forums is:

Fill car to the brim.
Set trip meter to zero.
Use up the petrol
Fill car to the brim again.
Take a note of how many litres it takes to fill it.
Take note of the trip mileage.
Convert the litres to gallons - 4.547 litres to a gallon.
Then divided the miles travelled by the gallons needed to replenish the tank.
Do this every time, and you will build up an accurate picture of your true MPG.

Thats how I do it and how I know my trip computer on my current car is about 2% out.

Notmyrealname

Idiophreak wrote: »

2010 Honda Jazz 1.4

Do 20 miles (mainly dual carriageway) to work and back, plus a couple of longer motorway journeys per week.

1) Driven fast - c40mpg.
2) Driven sensibly (70mph max) c48mpg
3) Driven gently (56mph max) - 55mpg
4) Long drives - 60mpg

Been a long time since I could afford to do anything but number 3.

Driving economically doesn't mean you have to do 3). I get good MPG out of my car but drive at or over the limit, do a lot of overtaking and have a speeding ticket. When I bought my current car, I chose it over another because the other had ditch finder tyres on and I like hooning it on the B roads we have around here.

However where you and I differ is probably how we leave motorways, approach roundabouts, traffic lights etc which is where you make the true savings. For example, most people approaching a car at a roundabout waiting to exit would drive up to it to the point where they need to brake to stop behind it. I would lift off the throttle further back hoping to arrive at a point where the car has moved off and I can join the roundabout without needing to stop. I'll have done the distance approaching for free whereas they were driving using fuel. And if I don't need to stop, I use less fuel than setting off from standstill. Same with junctions, traffic lights etc.

On the economical driving course I did, you did a set route at the start and the MPG, number of gear changes and time taken was recorded. At the end of the course you were expected to improve the MPG, reduce the number of gear changes and do the course faster. I was skeptical about the last point but that is what happened and by a good several minutes as well.