Normally I average 22mpg...ish, commuting and pottering around with the odd heavy right foot . I filled up 2 weeks ago with Tesco Momentum (remember the shortage), drove off boost for all that time....honest , got 220 miles with less than quarter of a tank left (I thought this was quite good cos normally lucky to manage 200) Filled up just now with 45.84 litres and I averaged
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.21.82 - WTF? I`m very confused!!!!!!

 

Do you have a boost gauge fitted, if not then you were probably still boosting, you will be suprised how easy it is to come on boost, and even the odd squirt can drop the average by quite a bit.

 

No I don`t so I was usually changing gear just before 3500 rpm.

 

Every Impreza I've owned seems to have managed the same mpg however they've been driven...

 

lol, that will explain it, you need to do it around 2000rpm if you want to be a real skinflint, 3500 rpm is well into the + side on my gauge.

 

Making boost by then mate

 

I worked it out once - qty in, miles driven. Usually always get between 200 and 230 a tank. Although on particularly good days out it's 180

 

Oh Still should have been better though considering I hardly went over 4k

http://www.torquecars.com/tools/uk-mpg-calculator.php

D`oh! Ah well, back to driving `properly` now then

 

OMG!

That's just told me the cost of covering 12K miles - £3.9K

 

Oh yeah, sorry...should have told you not to do that

 

Constant RPM seems to be the secret. Normally get 22mpg pottering or spirited on my daily commute on country roads at silly oclock in the morning. However, frequently get 27mpg on late night runs from my Grans in Ipswich up the A14 to near Peterborough holding 3500 to 4000rpm in fifth (uk box). I can imagine the conversation with the copper when I do get nicked. Q "Why were you going that fast?" A "I was saving fuel officer" LOL

 

I was doing 1 mile each way to work in mine and only getting about 35 miles out of 20 quid. Yes I am lazy. Sold the scoob and now in Clio 182, 20 quid lasts me at least 2 weeks ......

 

I wouldn't like to buy a car of you

 

That's about 8 MPG isn't it?

 

27.7 mpg I'm getting out of my P1

 

I have had 30 out of my 2.35 using no boost on the way home from le Mans.

 

10 according to the calculator up the page (fuel was about 1.35 at the time)

 

Why?

 

Usually get about 270 mile out of mine?

 

get 20mpg however i drive my 93 wrx.my last uk scoob had more power and would get 27mpg.the box makes a lot of difference.

 

Stop start short trips kill cars over time

 

What sort of time frame are we looking at tho?

I would get it well up to temp every so often and give it some. Serviced regularly and ran like this for a year and a half and never caused me any problems.

 

A car driven for short journeys not getting up to temp etc will suffer more wear and tear than a motorway mile muncher.
Me and my wife both have Fabia VRS's. Mine which was originally hers has done 170k, on it's original, clutch, second set of brakes (current front disks/pads have done 90k) and has had a radiator, steering rack, wheel bearing and a couple of bushes in that time and still drives as well as the day we picked it up at 30k.
Her car was 5 years old when we bought it having covered only 17k and needs new brakes all round, it has a noisy wheel bearing and all in all it is no where near as smooth as mine. Never again will i buy a car with such low miles unless it can be proved that the car was a low use motorway car

 

If you drive so slow that you can't use top gear then MPG will suffer considerably. I know most cars I driven don't do good MPG below 45-50mph (R32's mpg sweet spot is about 60-65mph).


I have this argument with the new Beamer (auto) which sometimes refuses to use 8th gear when cruising (yes it has 8 gears! ), so I have to manually engage it (I think its probably because it regenerating the DPF ). Thats the only way to get above 40mpg out of it (not bad for a 2ton 240bhp/400lbft diesel).


Also parking the car in a garage helps...the extra warmth means less enrichment on the next cold start (makes about 4mpg difference on my Golf in winter between being parked inside and outside). If the car is put away with a warm engine and the garage is well insulated (door and gaps included, insulate ceiling walls etc), the car will heat it up and it should hold heat until the next morning.

And finally drive like the brakes don't work. If you time lights and roundabouts right and get in the right gear, you don't have to stop meaning less energy wasted in stopping and restarting the vehicle. (Which is conservation of linear momentum...you'll note this when you hit the car infront.

Also there is a set of traffic lights by me that stay red for 5 minutes. If I catch these at rush hour I switch off the engine, as If I'm at the back of traffic, I can wait three light phases to get through them...thats 15minutes of idling!


Short sub 30minute journeys kill engines...fact. It fills the sump with condesation and unburnt fuel, creating foaming, acids and sludge (see the white/brown gunk on the filler). The only way to stop that is drive the car on the motorway for an hour every few weeks or so to boil it all off. DO NOT thrash it...thats the last thing you want to do with water, acid and fuel in the oil, you'll guarantee premature engine wear if you do that!! Or change the oil alot more often (like 3months). Although the latter doesn't fix the carbon fouling on the spark plugs, combustion chambers or exhaust/inlet valves etc which in turn worsen MPG further.

 

Oh well, I might not have improved on mpg with my little experiment but I did get an extra 20 or so miles out of a tank No really worth it for the 2 boring weeks of driving `sensible` though

 

The only time ive managed to get more than 25mg is driving everywhere at 55mph on the motorway, and I feel like the car is telling me "drive faster!!"

 

I know how that feels I used to try and drive economically going down to Kent to see my ex but the car wanted to go faster

 

yes i find the same, unless your driving like an idiot full boost everwhere, normal driving is the same as trying to potter around of boost.

 

Achieved 34mpg before having the Scoob mapped on a run to Lancs and back