Whats your MPG?

hawkwind23

LPG as said above.
easier to buy a straight diesel at £1000

mooseknunkle

E39 530i 20mpg average

Rowley Birkin QC

E46 2.0 M-Sport Coupé. About 30.4MPG. Highest I've seen it was 34.7 on a spin to Galway.

Much prefer to be putting petrol in it than paying a car loan though. :P

fitzgese

Rowley Birkin QC wrote: »

E46 2.0 M-Sport Coupé. About 30.4MPG. Highest I've seen it was 34.7 on a spin to Galway.

Much prefer to be putting petrol in it than paying a car loan though. :P

I was getting around 34 mpg when I was only doing long runs in my E46 325 Ci, has dropped down to 26-27 now that I'm doing city driving only. Would've thought there'd be a bigger difference between the 4 and 6 cylinder's though, to be honest since I've got it I'm amazed at how relatively fuel efficient the 325 is.

Still as you say would much rather pay for petrol than a car loan

Gavman84

2003 Ford Focus 1.8 tdci between 50 and 55 mpg every time. 136k on her and going great.

Scottie99

Doing 600km every week, costing me around €7 in electricity

jonathan13

is 50€ worth of petrol gave me 210miles good or bad? 90% city and 10% highway. Its an aging primera and normal driving

car monitor says 28 to 30mpg but i don't believe its accuracy

Bpmull

jonathan13 wrote: »

is 50€ worth of petrol gave me 210miles good or bad? 90% city and 10% highway. Its an aging primera and normal driving

car monitor says 28 to 30mpg but i don't believe its accuracy

I worked it out roughly and got 30.5mpg taking petrol at 1.60 a litre. But the only way you can get an accurate answer is if you know how many litres of petrol you bought. As 50 euro is not a definite quantity of petrol as the litres would change as price per litre changes. 30mpg probably isn't to bad for a primera doing mainly city driving.

mik_da_man

Getting about. 18 mpg from the ST around town.
And 35 from the 106 Rallye

ST can get about 30 on motorway trips, so it's a weekend car at the moment.

jonathan13

Bpmull wrote: »

I worked it out roughly and got 30.5mpg taking petrol at 1.60 a litre. But the only way you can get an accurate answer is if you know how many litres of petrol you bought. As 50 euro is not a definite quantity of petrol as the litres would change as price per litre changes. 30mpg probably isn't to bad for a primera doing mainly city driving.

thanks! was driving with finess to swords from city and average is 43MPG based on carputer, but i doubt that. Btw its a 1.6 petrol with a heavy body..so sluggish..gggrrrrrrrr...........

derry

Here are the numbers I got doing generally fill to brim and finish run top up sometimes part tank but as often as possible full tank when i hit low fuel warming light .


1998 5 gear Susiki swift 3 cylinder ~1000cc ~55bhp ~30 k to ~60K aspirated engine (car stolen and burnt out )

N roads Motor ways (for slow speed trials mostly late night use only like 2am to 5 am )

at ~45mph ~60mpg to 65MPG ( Best 70MPG with some coasting assist )
at ~55mph ~50mpg to 55MPG ( Best 60MPG with some coasting assist )
at ~70mph ~40mpg to 45MPG ( Best 50MPG with some coasting assist )

town heavy ~ 40MPG (best ~50 MPG extra urban )
heavy foot ~30MPG

1998 fiat bravo SX 5 gear 4 cylinder ~1400cc ~80bhp ~30 k to ~60K (aspirated engine known bad for fuel economy )
N roads Motor ways (for slow speed trials mostly late night use only like 2am to 5 am )

at ~45 mph ~40 mpg to 45 MPG ( Best 50 MPG with some coasting assist )
at ~55 mph ~35 mpg to 40 MPG ( Best 43 MPG with some coasting assist )
at ~70 mph ~22 mpg to 28 MPG ( Best 30 MPG with some coasting assist )

town heavy ~ 23MPG (best ~30MPG extra urban )
heavy foot ~18 MPG

1993 Toyota Carina 4 automatic 4 cylinder ~1975cc ~73bhp ~120 k to ~250K (aspirated engine known bad for fuel economy )
N roads Motor ways (for slow speed trials mostly late night use only like 2am to 5 am )

at ~45 mph ~30 mpg to ~35 MPG ( Best 37 MPG with some coasting assist ) stuck in low gear 3
at ~55 mph ~30 mpg to ~35 MPG ( Best 40 MPG with some coasting assist ) stuckin low gear 3
at ~60 mph ~35 mpg to ~38 MPG ( Best 45 MPG with some coasting assist ) on overdrive gear 4 ~33mpg fully loaded
at ~70 mph ~30 mpg to ~35 MPG ( Best 40 MPG with some coasting assist )

town heavy ~ 23MPG (best ~26MPG extra urban )
heavy foot ~20 MPG

Automatic compares badly to manual version where 45MPG seems to be the norm and 50MPG is possible mine looks to be 35MPG with 40 mpg achievable to proof manual numbers follow this link
http://www.spritmonitor.de/en/detail/436588.html


derry

derry

Ideal cylinder for petrol is between 250cc to 350cc .less piston less friction and so this is why a 3 cylinder car of 333 cc of 3 cylinders tends be slightly more fuel efficient than 4 cylinder of 250cc. If you change the fuel to something like diesel or E85 biofuel alcohol or LPG then these engines will have different size ideal cylinder that more efficient to burn fuel but best i can figure 500cc is the biggest size cylinder for any car burning normal fuels .Any bigger then there is losses mostly to do with flame front speeds issues . (Ships and electric power stations burn bunker fuel and their engines can have pistons of many cubic meters and get static efficiency as high as 50% but that's a different subject we are talking small micro motors here less than ~10,000cc)

derry

derry

The figures given earlier that fuel is 30% efficient is correct for static engine but not correct for car use
There is power drops transferring fuel through gear box to wheels .There is air drag ,There is brake drag and rolling resistance drag and various other resistances that drop the global efficiency of the normal car down from ~30%from engine to at best ~12% when in steady speed on highway at ~40 MPH to a few % when in stop start heavy traffic .The average global efficiency for a petrol car is ~5% and some diesel might be a tad more than that at ~6%. Basically 95% the petrol fuel is lost through losses .When comparing the electric car there are also massive losses ~50% the input electric energy is lost recharging the battery from the wall socket power supply .The electric motor is about ~85% efficient (It goes from peak of ~95% to lower about ~75% efficient depending the speeds and loads .There is losses send electric power from battery to the electric motor .The is looses due to air resistance brake drag and rolling resistance and other loses .At peak the electric car at ~40mph global efficiency will tend to be ~24% . In heavy traffic this will tend to be ~5% (electric engine is switched off a lot of the time ) .The average global efficiency will tend to be ~10% or double the petrol cars .
However certain new types of battery might alter these numbers slightly ,either with lighter weights or energy looses gain s or both .These are where the Leaf is compared to petrol cars are not the ~30% efficiency of the static petrol engine that many people tend to use . Worse some electric car efficiency number will neglect to mention the ~50% loses to get electric power into the batteries.Some electric car manufacturers will include the hidden extra losses for car where it take for every 7 liters of fuel in the car fuel tank there exists another 3 liters of fuel which is lost bringing that fuel to the petrol station forecourts (Oil has to be extracted from the ground transported to refinery where energy will boil it to distill it and then fuel has to transported to garage forecourt so another 30% of the fuel is lost in production losses ).If these losses are included then the petrol cars ~5% global efficiency often drops to ~4%. If electric car manufactures take gas guzzlers cars as the measure then that can drop car global efficiency to ~3%. Then very soon one can make a electric car look fantastic to petrol car where in reality electric cars have long way to go yet .Apples versus oranges problem
The hidden losses of electric cars are the power station has to make power and has efficiency of about peak with local water heating ~85% (TYPICAL PEAK IN IRELAND IS ~70%) to night time when base loads exceed demands and lots of power is wasted down to less than 30% efficiency .The industry average global efficiency is 60% for new 7 stage LPG and 50% for new oil coal .Older electric power stations are about ~40% global efficiency .Best I can figure Ireland is about ~45% global efficiency with electric power.There are losses to get electricity to houses about ~10%. If we take petrol car with most all losses included global efficiency is about ~4% we will find electric car will tend with most all losses to be about ~8% global efficiency ( ball park double the global for electric cars versus petrol cars )However there is another dirty little secret factor for electric that is the Achilles heal so far and that is battery replacement cost . Lead acid battery will do ~500cycles average for about two years and cost a lot to replace .If we look the cost for each mile with petrol versus electric from lead acid battery replacement costs factored in we find that that each mile petrol and electric costs about the same some ~€15cents per mile for small cars and ~25c per mile for larger medium sized cars (real figures for larger car don't really exist in this time ). So using lead acid there is no advantage worth talking about for many car users . Using other batteries like lithium polymer and lithium iron there is also more cycles per battery but extra costs tend in this time to wipe out these advantages so that electric is still only at best marginally cheaper than petrol when replacement battery costs are factored in .
.However game changer batteries like lead crystals or more likely lithium sulfur are in the pipe line which if they pan out will give electric massive reduction in replacement costs long cycle lives and massive ranges (more than 200 miles )and fast charging less than 5 minutes This can make electric power cost about even less possibly less than ~50% cheaper than petrol cars .It more likely to be five years before we see that . But then better LPG car will be still in there as they cost less to run unless the governments hammers the LPG fuels .
However electric cars super low maintenance costs will be so low that in ten years time electric cars will probably start to be the norm with ~600 mile ranges and recharge times of seconds that petrol and diesel cars will become virtually extinct by ~2050 .Petrol heads will also probably become extinct as well like steam cars heads did


derry

georgefalls

Alfa Spider 2.0. I can get around 30, in Miss Daisy mode. Usually around 20, for obvious reasons..!

Alfa 156 Ti 1.6. Does around 35, in mixed driving.

Hateart

Hummer H2 2005 6.0 v8 towing a Brian James twin axle car transporter with a range rover sport on it 8.9 mpg.

whomitconcerns

A6 s-line 2.0 diesel, about 41mpg overall average. Gets up to 60mpg at sensible speeds, lowest i have seen is about 31mpg on a bad stop start into work in the morning. Can get over 50mpg on way into work with no traffic, down malahide road.

ianobrien

2005 Nissan Almera 1.5 petrol with over 230k Km on the clock, averaged 6.6l/100km (43mpg) over the last 5000km, one driver.
2011 Octavia 2.0 diesel, averaged 4.8l/100km (58.8mpg) from new with three drivers. I got 4.1l/100km (69mpg) yesterday going from Cork to Athlone going at or about the speed limits.
1977 Escort 1.3 petrol - Haven't a clue, but it likes the stuff thanks to a thumping great carb and a heavy right foot. I don't want to know really.....

tin79

Mondeo 2.0 TDCI Estate, 2008 140 bhp.

Commute - mixed urban and motorway 47.9 mpg.

Long trip on the motorway - 54 mpg.

Towing - TBC

tossy

Managed to get a delightful 27 mpg on a long motorway drive to Cork and back yesterday 1.9 TDI quattro S3.

Plane

I managed 26MPG on the same run as Tossy yesterday. 91 Corrado: 2.0 16v with Twin webber 48's.
Which I was delighted with as normal tipping about is 20-22mpg.

tonedef

Got a Toyota GT86 about 6 weeks ago and the trip computer is saying that I've averaged 8.7l/100km since I got it, or 32 MPG.
Actually quite happy but then again economics didn't really play a part in my car selection process

Max Power1

tonedef wrote: »

Got a Toyota GT86 about 6 weeks ago and the trip computer is saying that I've averaged 8.7l/100km since I got it, or 32 MPG.
Actually quite happy but then again economics didn't really play a part in my car selection process

Either that trip computer is reading way over, that car is surprisingly economical, or you aint drivin her right! :P

tossy

Plane wrote: »

I managed 26MPG on the same run as Tossy yesterday. 91 Corrado: 2.0 16v with Twin webber 48's.
Which I was delighted with as normal tipping about is 20-22mpg.

Plus you won 2 prizes!

Jesus.

tossy wrote: »

Managed to get a delightful 27 mpg on a long motorway drive to Cork and back yesterday 1.9 TDI quattro S3.

That is positively dreadful.

tossy

Jesus. wrote: »

That is positively dreadful.

No it's positively great. My normal average is 23/24.

Vote 4 Pedro

New 2013 model Audi A3 Sportback, 1.6TDi, 7 speed S Tronic gearbox,
1st fill of fuel was €62 @ €1.47 p/l, so far covered 795km over 1st week, mostly 4 people in the car, 42.176 litres of fuel =Average 5.3l/100km. =53.6 mpg
gauge says 40 km till empty
30% motorway 70% urban,
Car dash says 4.9l/100km.

The other family car is a 2005 Ford Focus 1.6 petrol, 4 speed ctv automatic,
when the wife drives = 7.9 - 8.2l/100km = 35 mpg
My driving same car = 7.2 -7.3 l/100km = 39 mpg
or so the cars gauge says.

NewApproach

Getting about 37mpg on my BMW E90 330d

Jesus.

tossy wrote: »

No it's positively great. My normal average is 23/24.

That is shockingly bad for a diesel mate.

You sure there ain't a hole in the tank?

tossy

Jesus. wrote: »

That is shockingly bad for a diesel mate.

You sure there ain't a hole in the tank?

The badge says 1.9TDI quattro but it's an S3.I was being a bit cheeky sorry.

jimgoose

Averaging a little over 24MPG, 1999 Jaguar S-Type 3.0 petrol. Quite a bit of suburban trundling interspersed with motorway jaunts, varying short-ish to long-ish.