Fuel economy - anyone beating the official figures?
Discussion
TBH i can but i uasually just drive everywhere at full throttle and still get 45 MPG urban and 70 on a run, mind you it is a s
tbox pug 106D so full throttle is actually the only way to get anywhere 
i did manage to gently squeeze 77mpg on one run up the M4 but TBH it's worth lossing the 7 mpg to avoid the boredom, i'm sure if i sat on the arse of an artic all the way up the M4 i could get into the 90s but well, i cant be arsed, if i want to get the equiv of 99mpg i just use cooking oil (new), ah the freedom of driving a total shed that only cost £80 to buy and £30 to service when i can be botherd 
actually it's to small to be a shed, more like a coal bunker
tbox pug 106D so full throttle is actually the only way to get anywhere i did manage to gently squeeze 77mpg on one run up the M4 but TBH it's worth lossing the 7 mpg to avoid the boredom, i'm sure if i sat on the arse of an artic all the way up the M4 i could get into the 90s but well, i cant be arsed, if i want to get the equiv of 99mpg i just use cooking oil (new), ah the freedom of driving a total shed that only cost £80 to buy and £30 to service when i can be botherd actually it's to small to be a shed, more like a coal bunker Haven't worked out exact numbers but am ahead with my Mustang- perhaps not surprising when it was the most unlikely competitive economy run winner ever!
http://www.greencarreports.com/news/1107084_ford-m...
http://www.greencarreports.com/news/1107084_ford-m...
I think the trick to beating the official figures is owning an old car, as the new ones are designed to 'cheat' the tests.
My previous car (1995 Peugeot 306 D Turbo) was supposed to do 43mpg, but I managed an average of 57mpg over the 54k miles that I owned it.
My current car (1998 Peugeot 306 GTI-6) is meant to do 30mpg, but I'm averaging 37mpg in it so far, although I've only had it a few weeks.
My previous car (1995 Peugeot 306 D Turbo) was supposed to do 43mpg, but I managed an average of 57mpg over the 54k miles that I owned it.
My current car (1998 Peugeot 306 GTI-6) is meant to do 30mpg, but I'm averaging 37mpg in it so far, although I've only had it a few weeks.
Before my current car I had two SLK diesels one after the other, four years and 60k miles.
They were pretty quick cars, mid 6s 0-60, 150mph and being twin turbo diesels actually felt faster.
They were mental on fuel - so cheap. My 34mile each way commute would regularly see 70mpg and more. 750miles on a tank.
Even my current car - a big, heavy E class coupe with a 2 litre turbo petrol engine and auto box gives an average 34.5 and commuting 46 mpg. It's not bad at all.
Just to compare - back in the 80s my first car was a 957cc Fiesta. It had about 50bhp, weighed about 3 grammes and no matter how hard I tried or what I did it did 31mpg. This mattered because I was a poor student.
Economy vs performance and weight of modern cars is remarkable.
They were pretty quick cars, mid 6s 0-60, 150mph and being twin turbo diesels actually felt faster.
They were mental on fuel - so cheap. My 34mile each way commute would regularly see 70mpg and more. 750miles on a tank.
Even my current car - a big, heavy E class coupe with a 2 litre turbo petrol engine and auto box gives an average 34.5 and commuting 46 mpg. It's not bad at all.
Just to compare - back in the 80s my first car was a 957cc Fiesta. It had about 50bhp, weighed about 3 grammes and no matter how hard I tried or what I did it did 31mpg. This mattered because I was a poor student.
Economy vs performance and weight of modern cars is remarkable.
cheddar said:
Must be right up there on 'top speed/economy' graph
I smell a potential new thread
Panamera 4 E-Hybrid: 173mph, 94 mpg?I smell a potential new thread
I'm assuming fully electric stuff wouldn't be allowed though, cos the NIO EP9 does 194mph without the need for fuel...
Edited by Strudul on Wednesday 28th June 23:49
Rick101 said:
Why is that? I thought most modern cars cut overfuel when off the throttle regardless.
Not sure what you mean by "overfuel"?The ECU obviously can't cut fuel when you are coasting in neutral, otherwise the engine would stop running. It can can fuel on the overrun i.e. when the momentum of the car is turning the engine rather than the other way around.
I've managed on a couple of occasions to get 30.9mpg on the OBC (managed to get 31.2 once) out of the XK but over a week it seems to average 26.5mpg week in, week out so it beats the official combined by 2.5mpg, brim to brim, calculated over a week... mind you it would probably be better but I'm in a greater hurry to get home than I am to get to work 
and surrounded by a lot more cars on the way home as well. Not bad I'd say from a fairly old school 4.2ltr V8.
I can average about 38 in the Rover (1.8VVC).
and surrounded by a lot more cars on the way home as well. Not bad I'd say from a fairly old school 4.2ltr V8.I can average about 38 in the Rover (1.8VVC).
Octavia Vrs estate 2003.
Parkers reckon 35 combined, I have achieved 38.7 over 200+ tanks of (mainly) commuting.
That's going with the flow on A-roads, carrying speed through corners on B-roads and cruising legally on the motorway.
Looking a long way ahead and not braking more than needed is key. Don't do any of the daft coast in neutral stuff. Overtake when beneficial to allow me to continue to make smooth progress.
If road tax was levied on actual CO2 emissions then I'd be three bands lower and paying £220 instead of £305 per year!!
Parkers reckon 35 combined, I have achieved 38.7 over 200+ tanks of (mainly) commuting.
That's going with the flow on A-roads, carrying speed through corners on B-roads and cruising legally on the motorway.
Looking a long way ahead and not braking more than needed is key. Don't do any of the daft coast in neutral stuff. Overtake when beneficial to allow me to continue to make smooth progress.
If road tax was levied on actual CO2 emissions then I'd be three bands lower and paying £220 instead of £305 per year!!
alec.e said:
Jaguar S-Type 3.0 V6 Petrol:
Average speed 63mph
Jaguar Supercarged V8:
Average speed 53mph
Very impressive!Average speed 63mph
Jaguar Supercarged V8:
Average speed 53mph
I had an old 2000W 3.0 S Type for a while which typically displayed 17-20mpg on my 10 mile commute (ouch!)
I managed to get it to display 41.4mpg on a longer run once...but that was sitting at 50mph in motorway roadworks!
I'm a bit of a mpg....moron? As can be seen below. I like to see what things can do.
Other cars...i've generally been able to match or beat the quoted combined figures in most my my cars. Most of my cars are old and as such i genrally always worked out the mpg the manual way. Some cars have had computers but most of the figures below were worked out manually.
My 9-5 Aero did approx 30mpg average, with a low of 19.2 on a hoon, to 46mpg on a 60mph cruise. I think the quoted combined as 30.7mpg.
Erm..
1988 Renault 5 1.2 did late 40's mpg (got high 50's once on a steady run back from Scotland)
1993 Fiesta quoted 48.8 did mid 40's everywhere.
Had 3 ZX TD's and a 306 DT which were quoted at 42mpg ish and they did around there. Couldn't get anywhere near the 57 that the other chap mentioned in his 306 DT!
1995 Mondeo tdi, quoted 44, did around 40.
1998 Merc C180 Auto did around 30mpg average
1996 Saxo 1.1 - quoted 42 did around 40. (best was 56 for a full tank coming back from Scotland steadily)
2001 Primera 1.8 (great car) did around 32mpg on one commute, an 38 on the other. Quoted combined was 38. Could get 42mpg over a full tank if i was really careful.
2002 BMW 320i (2.2 6 cyl version) did approx 30mpg regardless. Couldn't get it to go any higher..but also, it didn't go much lower.
2000 Punto 1.9 JTD - quoted combined was 57.6. Always did high 40s-low 50's on commute, managed to get 61mpg one day, when i got a clear run. Would do high 50's at 70mph, pretty good for an old clunker.
2002 Punto 1.2 - would do around 50mpg. A little more in the right circumstances. Sweet little engine, that. (quoted average 49.6)
2000 Megane 1.9 DTi 80 - quoted combined was 51ish. Would do around there, usually. I managed over 700 miles on a tank in that once...but annoyingly i can't remember the what the mpg was.
2004 Focus Mk1 1.8 TDDi - quoted at 51mpg combined. I always got at least that on my commute, only ever dropped into 40's a couple of times. Good, tough engine, that, if a bit agricultural. Managed a true 62.7mpg over a full tank on holiday, was pleased with that.
SWMBO's 2007 107 1.0. Quoted 61.3 mpg average. Only ever managed 60mpg once on my longer commute. It used to do approx 55 mpg but it's gradually got less over the years and now does approx 48mpg. Quite a way off the average figure. I did once manage 68.8 on a long motorway run at 60mph. It can be very economical if the conditions are perfect but in normal use, it's less.
2001 Saxo 1.1. Quicker and more economical than my older one. Quoted 46mpg average. Would do around that area in normal use. Mid 50's on longer runs. Fun little car, definitely the quickest 1.1 i've driven!
2001 Yaris 1.0. Quoted 49.6mpg average. Could never get this. Would do low 40's, usually. But mine had strange size alloys and tyres which may have messed up the figures a bit.
2007 Auris 1.4d4d. Quoted 56.5mpg average. Would do around 52 average for me. Would do 60mpg at 60mph. I gather the later 6 speed ones did a few more. Best was 64.9 on a steady jaunt.
2007 Panda 100HP - quoted 42mpg average. Would do around there. Got mid 50's on holiday on longer runs. Would easily go to low 30's if driven properly!
1999 Puma 1.7 - great car, great engine. Genuinely never returned less than 40mpg for me over a tank, and that included some throppage. Really impressive.
S Type - as mentioned
9-5 - as mentioned.
2002 Megane 1.4 - quoted 42.8 average. Would do around that area. 38ish in winter. Could easily get to mid 50's if taking it easy on longer runs.
Current car is a 2007 Civic 1.8 EX. Quoted at 44.1mpg. Can't match that on my current commute (shorter than previous). Computer says 40.7 but manual working says 37.7.
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