Corsa 1.3 diesel = 48.35mpg average over the last 8 months.. getting 478.6miles per tank. Quoted figure for the car is 68 combined. It's hilly around here but even if I drive like my mum I've never hit 50 as yet.
Data from 'Road Trip' app on my phone. I've got data going back 2 years. My previous Astra was getting 34.66mpg average.
How are people getting their figures? From the live reading off the car computer as you are driving or by recording data?
Ohh sorry, have I missed something..
Erm...
Car 1 - Prius '10
Van 1 - Renault Kangoo 70Dci '08
You must understand I drive like an old man with both blinkers on and velvet slippers these days, rarely over 70mph, can be found in the slow lane most days.
The Prius was an "eco" choice, having spent £'000's on fuel with work/n' that in the recent past I decided I'd done enough to keep Shell digging wells for the foreseable, plus I'd had enough of Uber Buckets and completely changed my mind on driving..
The van is a few years old now, it's the little 1.5 turbo engined thingummybob and carries bikes/windsurfing/kitesurfing gear very well indeed. Again speed ain't the answer and it rarely gets used (I've used it 4 times since Feb) So it needs a good blast every now and again, which will be this weekend as it happens, looks windy see.. weeeeeheeeeeeeeee splosh.
You can borrow my grandad slippers for your right foot if you like.
Quich question - anyone running a lpg conversion?
What is the difference in the lpg mpg, compared to running petrol?
Thinking of buying a very cheep but clean Jeep 4.0L and converting it 
Ta
2005 1.2 Fiat Panda : 53mpg around town and on slightly longer runs.
2006 1.6 Astra SXI: 44 - 46mpg on a long run. I've managed to get the mpg as high as 51mpg but that was pretty exceptional.
Driving the Astra economically requires a gentle touch on the throttle and an even gentler one on the brakes. Oh, and sticking to the speed limit and not driving like a complete tool helps.
There's been some movement in the US to create a new test for these kinds of cars. If you only do trips of less than 40 miles you'll get unlimited miles per gallon of petrol...[quote] but if you drive it further than ~ 40 miles without a recharge it is worse than a standard diesel.
Sure about that? Citation? [/quote]
This link quotes 44 mpg (I don't know how US the test cycle compares to NEDC though) http://en.wikipedia.org/wiki/Chevrolet_Volt
I know it only wikipedia but it makes sense to me that a 1.4 petrol driving a generator driving a motor in a heavy car will be worse than a standard diesel car.
I know it only wikipedia but it makes sense to me that a 1.4 petrol driving a generator driving a motor in a heavy car will be worse than a standard diesel car.
over a traditional drivetrain, the generator system has very little mechanical drivetrain loss, and it has the ability to have a very limited engine kept in a sweet spot for long periods of time (ie the generator can be designed for peak torque and power at 1500rpm and nothing above or below that). In addition, the combustion engine can be smaller and lighter than it woudl be otherwise (its only got to produce the average power required to drive the car - say 40bhp), and there's no need for a gearbox & clutch (which is neither small nor light). Also, the car can be engineered very specifially to remove vibrations\resenance (as the motors always sitting at xxx rpm), thus less sound deadening is required.
I'm not saying it'll be more efficient, but i'd be surprised if it was much worse. When you add in the ability to power the car from plug-in, it could be more efficient. Trains have been using this technology for decades
How did you calculate those figures Dave? My Astra was a 2006 1.6 and I could only coax it to 34mpg at best. The Astra 1.6 has 50ltr tank so you must have been getting over 600 miles from a full tank. Is that right? My Astra gave me 381.2 miles per tank average. Like I say my current 1.3 diesel Corsa just squeezes 49mpg if I'm really careful ie. 478.6 miles per tank average.
I've picked the most economic, practical small car I could and I seem to be getting significantly less mpg from it then a) the manufacturers combined figures (67ish) and b) the majority of figures people are quoting on here for larger engined cars..
Is it my driving? I drive like granny. My corsa has 6 forward gears and I rarely get over 2000 rpm, even on the motorway.
depends on what you're driving. Nearly all my journeys are long (>50 mile) slogs up big, fast roads. If I had a 5 mile commute across town I'd expect to lose 1/3 of my economy
about 30mpg
C class Kompressor
How did you calculate those figures Dave? My Astra was a 2006 1.6 and I could only coax it to 34mpg at best.
I don't use a trip computer but do the calculations based on fuel used and distance covered. If I get less than 140 miles out of the 1st quarter of a tank I feel I haven't been trying hard enough.
I think my style of driving has been a big factor in the MPG figures I can get. I always coast down hills in as high a gear as possible (I live in North Devon so very easy) and try not to loose too much speed through the corners (of course the cost in tyre wear may well be higher than the amount of money saved on petrol).
I've always been quite light on the throttle and I tend to do a lot of A road and motorway driving for work which really helps to even out the average MPG figures. I've also stopped hurrying to get anywhere, it makes a huge difference and most of the meetings I go to are boring so why rush?.
I've monitored my fuel consumption since I got the car 3 years ago and I've steadily been able to figure out what driving style gives the best results.
My car also has the Twin Port engine modification. Never been too sure what it means but I think it helps with economy around town.
How many people here are quoting trip computer figures, and how many are working it out properly?
Computers are generally not as accurate, and can vary either way by, to my knowledge, anywhere between 1-5mpg.....
Anyway,
1.6 petrol 05 Focus estate:
[img]
Untitled by PeterPoddy, on Flickr[/img]
EDIT
It seems like Big Dave and I are on the same wavelength! 
How did you calculate those figures Dave? My Astra was a 2006 1.6 and I could only coax it to 34mpg at best.
LEAD FOOT ALERT!!!!
Fek me. We used to have a 1996 1.6 Cavalier. That used to do 36-40mpg fairly easily!
Very true, Mr Poddy. A German TV show connected up an accurate fuel flow meter/GPS and found that the instantaneous consumption figures were a country mile out, 25% at times. The overall figures weren't as bad but also a long way out, I can't remember the exact figures by brand but they were optimistic by of the order of 10%. Speedos and trips are often of the order of 6% fast.
Quich question - anyone running a lpg conversion?What is the difference in the lpg mpg, compared to running petrol?
About 5-10% depending on the car and the kit. Sometimes a decent kit can actually coax more economy from your older car, but it's always slightly down on energy content so it'll always be a bit lower overall. A good kit will adjust your spark timing too but few do and it may not be worth the extra cash.
Oh and all those quoting high mpg figures at a constant 60mph - pah. My car would do 70-80mpg at 60mph if I could be bothered to drive it that slowly on the motorway!
Fascinatingly (to me, I'm sad) my diesel gets 50ish on a run at 70, 60ish on a run at 55-60 and about 45 at 80. My celica gets ~25 at 60, 27 at 70 and 30 at 80. Goes back down rapidly after that as it starts fueling at 12:1 then which isn't nice on my pocket. Very curious!
So where do you drive this 400bhp Celica over 80 Coffeeking? And wherever it is I can't help thinking you have the most pointless car on STW unless it has race/rally numbers on the doors. In which case I find your interest in consumption just one of many contradictions I'll no doubt never be able to get my head around.
CK does race cars iirc. Although I fully understand the desire to tinker with cars and create something powerful, but not want to drive it all the time. The pleasure is in the technical challenge and engineering skill. He seems to understand the need for calmness on public roads and good fuel economy.
BoringCardiganWorld
What happened to the threads where we talked about drinking smoking and shagging 
Used to have an Astra 1.6 2006 model. Shit. Burnt a massive hole in my pocket. 33mpg i was lucky.
Now on a 1.2 Fiat Grande Punto.
62mpg driving like my mum
43mpg normal driving.
still returns 40+ on the motorway, which aint bad for a 1.2 petrol
Honda Civic 59 plate
Type R 2.0L
33.4mpg over 18k from new of mixed driving
Quich question - anyone running a lpg conversion?What is the difference in the lpg mpg, compared to running petrol?
Thinking of buying a very cheep but clean Jeep 4.0L and converting it
Ta
10-20% less, and remember the first 10 miles of any journey will be run on petrol, not gas, so if your commute is short....
Volvo V50 2L turbo diesel...42 MPG general commuting (25 miles each way, combination of country roads and main roads). Have seen 51 MPG once on a long motorway drive from London to Edinburgh.
Not all that impressed with the figure to be honest, though my foot is probably heavier than it could be...
fiesta 1.4 tdci 2009 will do 80+mpg at 50-60 on a roads and 55+mpg round town
not bad really and 20 quid road tax
55 late 1.7d astra estate. Last fill up was 63.78 mpg. But I do commute up and down the motorway around 55 mph. Need to make a tank last all week.
E90 bmw 320d
Around town (At night) 39mpg
Motorway fast 40mpg
Motorway slow 45+mpg
Taken from trip but have also done the maths (fill up amount divided by miles) & found the trip to be pretty spot on to be fair 
land rover Td5 SWB mud tyres and roof rack, some towing 50%off road. average 25mpg
2008 1.9tdci Ford focus hatchback 55+mpg have managed 70mpg on motoway at a steady 60-65mph
1986 VWT3 1.9d hightop 35mpg
Old passat estate 1.9tdi (before Ford) 55mpg
It's crazy - i have an LDV Convoy van, R Reg, 2.5L (no turbo) and it will do from Manchester to Newquay (approx 335 miles) on one tank which costs 98 pound. It works out that i get about 4.65 miles per litre!! Tough one to swallow!!
Lucky to get 31 or 32 on daily commute to work (up and down big hills, my journey crosses three valleys) on mway get 40+mpg, it's an Amarok with a supposedly fuel efficient engine, it apparently improves with time. I do drive defensively both with this and the Mrs's Mini, have the computer on all the time, coast down hills stick to speed limits even slow down for roadies who inadvertently harm my consumption figures by having so to do. But I do get 500 miles per tank which lasts a couple of weeks but costs either side of £100 quid depending where purchased.
it's an Amarok with a supposedly fuel efficient engine
Fuel efficient engine, very inefficent body and vehicle.
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