Whats your MPG?

IrishZeus

Astra OPC - 27mpg (mixed)

September1

Deleted User wrote: »

Nissan Leaf based on 3.5 miles per kw/hr not counting the improved efficiency of the leaf due in the spring.

Works out around 194 MPG !

Oh yes it works like that because of taxes, but let's do honest fuel for fuel comparison:
1 liter of gas is 9.7 kWh but we can only use 30% of that energy, rest is wasted on heat hence to make fair comparison 1 liter of gas is 2.91 kWh and one imperial gallon is 4.546 liters, hence one gallon holds 13.23 kWh of usable energy which we multiply by this 3.5 miles to get not so impressive 46.3 mpg! Diesel has about 10% more energy per liter so we would be around 50mpg in LEAF was a diesel.

Those are important numbers, first of all they show that serial hybrid vehicles are quite poor when running on gasoline, second that modern cars and engines are really good in case of economy.

September1

September1 wrote: »

Oh yes it works like that because of taxes, but let's do honest fuel for fuel comparison:
1 liter of gas is 9.7 kWh but we can only use 30% of that energy, rest is wasted on heat hence to make fair comparison 1 liter of gas is 2.91 kWh and one imperial gallon is 4.546 liters, hence one gallon holds 13.23 kWh of usable energy which we multiply by this 3.5 miles to get not so impressive 46.3 mpg! Diesel has about 10% more energy per liter so we would be around 50mpg in LEAF was a diesel.

Those are important numbers, first of all they show that serial hybrid vehicles are quite poor when running on gasoline, second that modern cars and engines are really good in case of economy.

I'm not really sure about your calculations because the EPA gave the Leaf a 99 U.S mpg equivalent or 118 IMP mpg. Or 116 U.S mpg city, or 127 IMP mpg city.

But what really matters is my 194 mpg because that means that you need a petrol or diesel car that gets 194 mpg to be as cheap as the Nissan Leaf to run and that's what matters to most people.

coolisin

Got a shock today since the last fill in the Mazda 3 today mostly urban driving 27mpg.

air

Seat Arosa 1.7SDI - averages around 60mpg / (4.6L/100km) but that includes a lot of fastish motorway travel, 70+ easily achievable if sticking to N roads. Rated for 78MPG on the extra urban cycle / (119g Co2 /km combined).

air

air wrote: »

Seat Arosa 1.7SDI - averages around 60mpg / (4.6L/100km) but that includes a lot of fastish motorway travel, 70+ easily achievable if sticking to N roads. Rated for 78MPG on the extra urban cycle / (119g Co2 /km combined).

How are you calculating this ? that's pretty good if it's your tank mpg or better again life mpg ?

What year is it ?

coolisin

coolisin wrote: »

Got a shock today since the last fill in the Mazda 3 today mostly urban driving 27mpg.

How many miles do you do a year ? how much does a fill cost you a week ?

Might be worth while converting to LPG, few places now that offer it for 81 C/ L one in Kilcullen, Naas, Clonmel, and Gorey.

Google LPG Kilcullen I think 2 websites come up for the same garage, one must be a new site. But I wish they would open a garage in Carlow Town.

Put it this way, if I had your car it would cost me :eek: 123.00 Euro's to do my 750 kms a week.

on LPG that would cost 63, put it another way the prius costs me 62 Euro's to do it on Petrol, or on LPG would cost me 30-34.

Nissan Leaf 15 Euro's.



So over a year I would spend the guts of 6,000 Euro's in petrol, LMAO

That would pay for a Nissan Leaf in 4.0 years or less including maintenance and road tax savings. Less with a trade in.

air

Deleted User wrote: »

What year is it ?

1998

Deleted User wrote: »

How are you calculating this ? that's pretty good if it's your tank mpg or better again life mpg ?

Based on brim to brim measurements.
It's a while since I've kept accurate records but have started again recently.
My best tank mpg was 80ish IIRC but that was really babying it.
I haven't the patience to drive anything less than the speed limit on the motorway where conditions allow. As stated the economy is in keeping with the quoted figures from the manufacturer.
On the downside the gearboxes in this model are very weak and prone to failure.

rocky

Suzuki swift, 9.5l/100km urban, 7.5 extra urban, 8.5 motorway 130km/h indicated.

N52 530i 15.6l/100km 2km drive to work , 8.6 motorway 130km/h indicated, 10l 150km/h motorway on cruise control

Mr Mike

1995 Corolla 1.3 petrol, 5.6L/100km (50mpg) combined

85% open roads, 15% town

whizbang

2011 Toyota Avensis 2.0D tourer (estate). 6.8-7.2L/100km (39-42 mpg) mixed, 50K/year.

Slidey

Mr Mike wrote: »

1995 Corolla 1.3 petrol, 5.6L/100km (50mpg) combined

85% open roads, 15% town

50 mpg out if a 17 yr old petrol car?

I don't mean to single you out really but colour my skeptical if I find some of the figures being quoted here as highly dubious

deckycoop

650Ginge wrote: »

Would love to know how you get that figure?

from the minute i get into car i am in 6th gear doin 110-125kph. only change gears once at toll bridge. then work at Lucan. 80miles off nearly non stop driving and takes a hour and a half to 1.45

air

air wrote: »

1998

Based on brim to brim measurements.
It's a while since I've kept accurate records but have started again recently.
My best tank mpg was 80ish IIRC but that was really babying it.
I haven't the patience to drive anything less than the speed limit on the motorway where conditions allow. As stated the economy is in keeping with the quoted figures from the manufacturer.
On the downside the gearboxes in this model are very weak and prone to failure.

I'm a bit skeptical to say the least. But older cars were a fair bit lighter then too.

I Remember getting 55 mpg easily enough in a 2002 punto sporting, 80 HP, was pretty fast too had a great engine and gearbox, but it was light.

Cars today are way too heavy !

September1

Deleted User wrote: »

I'm not really sure about your calculations because the EPA gave the Leaf a 99 U.S mpg equivalent or 118 IMP mpg. Or 116 U.S mpg city, or 127 IMP mpg city.

But what really matters is my 194 mpg because that means that you need a petrol or diesel car that gets 194 mpg to be as cheap as the Nissan Leaf to run and that's what matters to most people.

EPA is using MPGe to compare EVs vs EVs and we are talking here about comparison in terms of energy used. What is interesting is that it seems that simple electric drivetrain is not particularly efficient.

I think also you have number wrong on count of efficiency. Gallon of petrol is 7.03 and gallon of diesel is 6.59. One kWh at night is E0.09 so gallon of petrol can buy 78 kWh and diesel would buy 73 kWh we multiply it by 3.5mile/kWh and it means that you can do cost equivalent 273 mpg (petrol) or 255mpg (diesel). You might be able to purchase cheaper electricity is some deals out there.

LPG cost equivalent would be 140mpg

Flyer1

36-38mpg in my Integra Type R granny driving, about 25 - 28 on a spirited drive.

57 - 60mpg in my Mk3 TDi Golf.

yllw.ldbttr

2006 E46 320 CD ranges from 39 - 45 mpg (if I've done the conversion correctly).

air

Mad_Lad wrote: »

I'm a bit skeptical to say the least. But older cars were a fair bit lighter then too.

I Remember getting 55 mpg easily enough in a 2002 punto sporting, 80 HP, was pretty fast too had a great engine and gearbox, but it was light.

Cars today are way too heavy !

You're welcome to be as skeptical as you want, VW released the same car with a 3 cylinder tdi and some other mods as the Lupo 3L (3l/100km).
Plenty of others on fuelly and spirit monitor exceeding my economy on my car.
I bought it purely on the basis of its combination of economy & its engine size which is large enough to claim the max mileage rate.

Seweryn

Slidey wrote: »

50 mpg out if a 17 yr old petrol car?

I don't mean to single you out really but colour my skeptical if I find some of the figures being quoted here as highly dubious

Depends on lot of things. My 16 year old petrol engined car - Honda Civic 1.5 VTi, delivers very same mpg - about 5.8 l/100km on total average and does over 50 mpg (5.2 - 5.5 l) on a long run.

And actually the older (petrol engined) cars seem to be more economical than the later models, so it is not a surprise.

Juniorhurler

2008 Honda Accord ictdi. Wexford to Newbridge this morning gave 51.9 mpg on poor enough roads.

Seweryn

Juniorhurler wrote: »

2008 Honda Accord ictdi.

That is a very complicated name for a car model.

Mr Mike

Slidey wrote: »

50 mpg out if a 17 yr old petrol car?

I don't mean to single you out really but colour my skeptical if I find some of the figures being quoted here as highly dubious

No offence, but I suprise myself too!

The secret is avoiding short trips, being very light on brake and acelerator and staying below 80km/h

Seweryn

Mr Mike wrote: »

No offence, but I suprise myself too!

The secret is avoiding short trips, being very light on brake and acelerator and staying below 80km/h

And it has nothing to do with the age of the car once it it in reasonable condition. I can actually be an advantage due to the car carrying less of the unnecessary rubbish.

Stealthirl

I had started another thread as i didant see this but heres mine
42.9MPG or 6.58 l/100km over a year

Just thought i would share
Most of my trips are short and the car has nearly 230K miles on it,
it is a 05 DSG Octavia II 1.9TDi
Its fairly well looked after but not as fun as my old Soarer










Was thinking about giveing this terraclean a go and see if it makes much diferance. i think its €120 would it be worth it ?

air

For the skeptical I went back over my last few receipts, over the past 2616km/121.44l my average works out at 4.64l/100km or 60.88 mpg imperial. Plenty of scope for improvement on that with slower driving.

jones

Golf 2.0 TDI 110hp - 4.0L/km or 58 mpg

MuppetCheck

jones wrote: »

Golf 2.0 TDI 110hp - 4.0L/km or 58 mpg

4.9;)

ek motor

1998 Honda Civic 1.4

Mostly city driving - 43 mpg

Just calculated it there, bit more than i thought it would be!:)

Seweryn

ek motor wrote: »

1998 Honda Civic 1.4

Mostly city driving - 43 mpg

Just calculated it there, bit more than i thought it would be!:)

That is very good if it is mainly city driving. My EK3 does over 48mpg, but it is average mixed driving (mainly local roads) and the 1.5 engine is more economical.

blingrhino

43.5 mpg avg 520d f10 auto mix of driving