I like summer

[kalniel]

I just averaged 67MPG over 40 litres of fuel - no special long trips either, just the normal commute

Mr tax man, why do you make me pay so much road fund license? - it's a green car!

[Sputnik]

what is this magical car?

[perfectshave]

Yeah sputnik is right, can you share to us what this magical car is?

[kalniel]

what is this magical car?

Just a nine year old astra 1.7 dti.

[GoNz0]

hmm and here is me getting 27mpg

but i have more fun doing it

[kalniel]

hmm and here is me getting 27mpg

but i have more fun doing it

Not on my commute you wouldn't

[digit]

hmm and here is me getting 27mpg

but i have more fun doing it

I'd say its roughly the same mpg for me, no matter how I drive the V6 likes a drink I think its a good thing I don't have a trip computer

[Gerrard]

I can push 31 MPG in my ST220 on a good day. Did reach 40 MPG once, but that involved coasting down hills and not really having that much fun!

[GoNz0]

I'd say its roughly the same mpg for me, no matter how I drive the V6 likes a drink I think its a good thing I don't have a trip computer

straight 6 here

[Butcher]

hmm and here is me getting 27mpg

but i have more fun doing it

That's about what I get. Life's too short to worry about pottering around in an underpowered oil burner.

[Sputnik]

Just a nine year old astra 1.7 dti.

I'd guessed it wasn't a petrol engine, I was thinking it was something with the 1.4HDI PSA engine - Pug 206 or the like.

[kalniel]

Yeah it's surprising - Opel/Izusu were too forward thinking with that car/engine combination, they even made an eco version which had longer gear ratios, some aero tweaks and low-rolling resistance tyres, but eco stuff wasn't really fashionable then and it's only 8-9 years later that everyone else is rushing to do the same thing (while their own models are no longer as efficient!). Still, the non-eco model that I've got does okay, even after fitting slightly wider and non-low rolling resistance tyres (I got rid of the Michellin Energies and put on Vredestein rain tyres). It seems to be getting more efficient with age as well - talk about a long wear in period!

[Zak33]

Yeah it's surprising - Opel/Izusu were too forward thinking with that car/engine combination, they even made an eco version which had longer gear ratios, some aero tweaks and low-rolling resistance tyres, but eco stuff wasn't really fashionable then and it's only 8-9 years later that everyone else is rushing to do the same thing (while their own models are no longer as efficient!). Still, the non-eco model that I've got does okay, even after fitting slightly wider and non-low rolling resistance tyres (I got rid of the Michellin Energies and put on Vredestein rain tyres). It seems to be getting more efficient with age as well - talk about a long wear in period!

Vaux diesels take an eterity to get good....you just got there

The DTi Astra with the special gearing was mad... undertray, low rear spoiler, thinner tyres with huge profiles...... but man it was economical.

But dont try to fit snow chains they just don't fit the arches

[oolon]

I just averaged 67MPG over 40 litres of fuel - no special long trips either, just the normal commute

Mr tax man, why do you make me pay so much road fund license? - it's a green car!

Colour green perhaps? The bad news is diesel per litres contains more energy than petrol, which one reason it gets more Kilometers per litre, without it being better for the environment.

[kalniel]

Colour green perhaps? The bad news is diesel per litres contains more energy than petrol, which one reason it gets more Kilometers per litre, without it being better for the environment.

Why wouldn't half the fuel usage and a huge amount lower CO2 emissions per distance travelled be better for the environment? Don't diesels also convert more of the energy in the fuel to actual motion rather than wasting it as heat or energy rich emissions?

[oolon]

Why wouldn't half the fuel usage and a huge amount lower CO2 emissions per distance travelled be better for the environment? Don't diesels also convert more of the energy in the fuel to actual motion rather than wasting it as heat or energy rich emissions?

I did not say diesel engines were not more efficient, I believe diesel engines "burn" the fuel, where as petrol engines explode it, which is why they are better. Its just 12% of the improved miles per gallon are in fact due to the fuel having more energy in it rather than due to the improved efficiency.

1 gallon of gasoline = 124,000 Btu
1 gallon of diesel fuel = 139,000 Btu

139000/124000 = 1.12

I can definitely say my car (SAAB 9-5 Estate) 2 Litre, is much less efficient than your one, getting me 30MPG (petrol). However I am willing to bet you mine was cheaper.