Thought this might be interesting, for those of us who check our consumption on each fill-up,. thereby getting an accurate reading - what's the worst you've ever got from a full tank, and what's the best you've ever got from a full tank?
I know that those who trust their on-board-super-duper-computer will want to post too, so go for it, but let us know how you've got the info.
I'll start us off: Mine is the old fashioned method as mentioned above, brim tank, reset milo, use fuel, rebrim, compare fuel used to mileage completed.
Worst tank: 23mpg
Best tank: 33mpg
I'm not quite sure which of those is the most embarrassing :D
That best tank was done almost entirely at between 100 and 120 mph though (in Germany) so I think is quite impressive. And some people question the usefullness of 6th gear!
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I just look at my fuel computer for my 'average' info.
Best 52mpg, Worst 46mpg.
Over the course of a tankful the mileage seems to even itself out (ie. the mix of economical and uneconomical driving) and I seem to fill up every 600miles no matter what.
Car is a chipped Volvo S60 D5 (2.4 5cyl 193bhp)
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I wonder how accurate most fuel computers are? Mine usually shows 200 miles range left when the red light comes on.
Measured full tank to full tank and assuming that the odo is correct - 65 litres every 420 to 440 miles.
Best tank: 32mpg
Worst tank: 27 mpg
Average over 3000 miles: 29 mpg
A mix of 75% motorway and dual carriageway, 25% urban/suburban I should say.
Standard Volvo V70 D5
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smart
Worst 15 mpg
Best 90 mpg
First was on a track day
Last was in a diesel.
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Goona
Measured on Brim to Brim
Worse 33mpg
Best 57mpg
Trip computer is up to 10% out on all functions depending on how it feels. Miles to go display goes out when low warning light comes on (usually at about 70 miles to go) Despite pushing the low fuel as far as I dare before pooping myself, I have never managed to squeeze more than 65 litres into the 70 litre tank.
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If you mean on your current car:
Lexus GS
Best 33mpg
Worst 24mpg (From the computer)
If you mean from any cars you've owned
Best 47mpg from R plate Mondeo 2 litre petrol (computer)
Worst 8mpg from Jag XJC V12 (manually worked out)
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Megane 1.5 dCi
Worst - 48mpg
Best - 61mpg
Average - 56mpg
:-)
My range display goes blank when the warning bleeper comes on as well.
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Megane 1.5 dCi Worst - 48mpg Best - 61mpg Average - 56mpg
I know that sometime in my life that's going to be the thing that switches me to diesel. I don't know when, I don't know where. But it will.
--
Adam
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BazzaB
I use your way of calculating my MPG:
Mondeo 2.0 petrol X Reg (old shape)
Best 42.6 (last weekend a 306 mile trip to Norfolk)
Worst 32 (commuting to work)
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'92 GT-Four
Worst tank - 20 mpg (daily commute)
Best tank - 28 mpg (Plymouth to London and back)
What's a trip computer :-)
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My last three cars (all hand-cranked calculations)
02 VW Passat 2.0 Sport Estate
Worst: 25.23 mpg
Best: 35.62 mpg
Average: 28.99 mpg
04 Vauxhall Vectra 1.8 LS (only had this for a couple of months)
Worst: 35.75 mpg
Best: 38.69 mpg
Average: 37.02 mpg
54 Vauxhall Vectra SRi 1.9CDTI (150PS)
Worst: 36.42 mpg
Best: 48.66 mpg
Average: 42.18 mpg
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Current Picasso 2.0 HDi chipped, from the computer:
Best: 55mpg
Worst: 39mpg
Average: 45mpg
Previous Passat TDi 115 (from fill ups)
Best: 69mpg (the time of last fuel crisis - when's the next one or is it here?)
Worst: 44mpg
Average: 49mpg
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Over Whole tank brim-brim..
Peugeot 406 2.1TD
Best:57.05
Worst: 32.11
Alfa GTV 3.0l V6 24v
Best = 26mpg
Worst = 15mpg
Suzuki ignis:
Worst = 34.03
Best = 45.66 (using acetone and xylene supplement)
Fiat Punto 16v
Worst = 40.23
Best = 54.31 (using acetone addition)
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Hey FI (AP)
how is your experiment with acetone. Does it make the difference claimed for it?
Anyway
Subaru Forester XT Turbo Auto
Worst 19mpg
Best 27.5mpg
Best ever - 45mpg in Fiat Uno
Worst - as above, even worse than BMW 730.
--
Espada III - well if you have a family and need a Lamborghini, what else do you drive?
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Espada - this is a bit OT, but yes,8-15% difference seems to be consitant. I've carried on using it. I'm also experimenting with 5% xylene as well. Maybe this should be in "the lost thread of acetone"
cheers.
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In recent times:
Overall Best: Renault Megane 1.5dci - 68.5mpg (calculated - others all computer)
Daily driver best: Volvo V70 D5 Manual 47.7mpg (gentlre motorway)
Daily average: Volvo V70 D5 Manual 39.9mpg over last 2000 miles or so mixed.
Weekend Best: Boxster S (260) Manual 29.4mpg
Weekend worst: Boxster S (260) Manual 18.2mpg
Overall worst: BMW 540i 4.4 11.6mpg
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And do you see the difference on SWMBO's car where she hasn't been told about it?
Currently in a 1.8 16v vectra, can get 44mpg out of it; generally get about 40/41; can get as little as 28.
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The fabia computer has never showed lower than 45mpg over a journey, best I've seen was a trip back from Newcastle this weekend when I got 70.4mpg.
That was driving along looking at the instant mpg rating and adjusting my driving to keep it as high as possible though.
Overall average (last 3200 miles has been 52.4)
-- Lee .. A festivus for the rest of us.
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BMW330D auto
Worst: 35
Best: 39
BMW 330D Manual
Worst:39
Best: 46
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Audi A3 2.0TDI Sport
Best - 59.02mpg
Worst - 38.97mpg
Average 44.7mpg over 17867 miles
VW Golf TDI Auto
Best - 40mpg
Worst - 36mpg
Average 38.1mpg over 2072 miles
Citroen Xsara 2.0HDI
Best - 54.97mpg
Worst - 36.10mpg
Average 45.60mpg over 14966 miles
Rover 214S
Best - 40.24mpg
Worst - 26.42mpg
Average 32.1mpg over 6453 miles
The accuracy? I'm scary and log it all in Excel!!
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Vauxhall Corsa 1.2 SXi:-
Average - 43.5 mpg
Best - 46 mpg
Worst - 28 mpg
The worst came when sitting on the M6 for 2 hours at 85 mph with the engine spinning at 4200 rpm. And yes, it was in fifth.
Ben
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Landrover 90 3.9V8 Auto
Best - 16mpg
Worst 5mpg
Best was on a steady A road journey, the worst was at the offroading event we went to at the end of the A road journey
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I think I've got the best petrol consumption :-P
Best - 58.7mpg,
but I could probably beat that quite easily in good condditions. It was only A road driving with loads of roundabouts etc. On m/ways I would do a lot better.
Worst - 33.5mpg
(With Optimax, which to gives me about 2mpg less than normal petrol, and is no faster)
Current average (A roads) - 46mpg with Shell unleaded
- 44mpg with Shell Optimax
Average for city driving - 39mpg with Shell unleaded
899cc Fiat Seicento - 39bhp :-)
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Sorry P3t3r,
My Jazz managed a 63mpg brim to brim (65 on the computer)
My worst is on the 3.5ltr P5B Rover 8MPG on a trach day - Yes I did take a 1970 Rover P5B on a track day - Castle Coombe, Prescott Hill Climb, Colerne Airfield etc
Best overall in the Audi A4 managed 71mpg Brim to brim (75 on computer)
Current car is Primera 2.2dCi and I can't do better than 48 mpg out of a full tank brim to brim
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Brim to brim calculations, worked out on a trusty Casio:
Best: 55mpg
Worst: 41mpg (4 people and their luggage on a swift[ish] trip to Fife from Northumberland. Not the flattest route you'll agree and regular visits to 70 which is about 3950rpm)
Average 49-51mpg
Not bad for an ageing Polo with 106000 miles and 4 on-the-floor
The best figure we squeezed out of this car was by my sister on her summer hols. At a pretty much constant speed of 55-60, from Newcastle to Hampshire she got 60mpg. we couldn't believe it neither!
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best 57 ish on a run This car (CDTi 150). Best ever 66. Vectra DI driven hard on a run.
Worst 27 Triumph Herald making good progress on the A5
Absolute worst 0 mpg in a traffic jam
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BMW 320td - Brim to brim
Overall (25 months/32.000km) = 49.3 mpg (5.73l/100km)
Rural
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"I'll start us off: Mine is the old fashioned method as mentioned above, brim tank, reset milo, use fuel, rebrim, compare fuel used to mileage completed."
Passat 130 + chip + fuel cooler
Best tank 46mpg at 50 - 75
Worst tank 35mpg at 100 - 130 - in Germany
And whats wrong with the old way??!! - note mileometer have an error of around 5%
K2
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Volvo S40 T4.
Best: 36.17mpg - couple of weeks of 60-mile round trips to Heathrow after work every day to watch Concorde's final days in service :-(
Worst: 22.80mpg - funnily enough, the first tankful after I bought the car :-)
Average: 29.19mpg over 54000 miles
Calculated using Excel (where's my anorak?)
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Citroen C2 1.4 hdi (computer avg)
Best: 93mpg (100 mile run, mainly 60mph with a 10 mile crawl at 40)
Worst: 51mpg (town driving)
The tank average for this car has never been below 65 mpg
(just coming up to 15k total).
oops I've forgotten where the petrol station is!
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Worse ever was 10~11mpg on my Clio Williams that was on the track. Best was about 36 driving to the same track day.
Worst on a diesel was 39mpg though that was on the track though only 65hp Clio mind you. Adverage though is 55mpg which isn't to bad as I'm not easy on the car.
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Mondeo 1.8 SCi
Best 33
Worst 26
Average 29
The trip computer is always optimistic, quoting 34-37.
Pretty rubbish condsidering mostly motorway miles. Puzzled by the small matter that the fuel consumption has actually slightly improved since I changed work location and reduced motorway miles. It brings in to question the point of having a 6 speed box.
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Focus 1.8
Brim to brim method
35.45mpg (the best ever!)
Worst
26.49mpg
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Nissan QX 3.0 auto
Brim to brim method
- Best 32mpg (motorway at 70)
- Worst 12mpg (road rally)
- Average 26mpg over 50,000 miles
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Worst:
Chevrolet 454 pick-up: 9 mpg everywhere. It had twin 25gal tanks.
BMW 730i: 16mpg on everyday commute (3 miles each way)
Best:
BMW 730i: 31.5 mpg during year 2000 fuel strike, non-stop to Aberdeen from East Anglia.
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