Saving Fuel/MPG Guide v1.11111111 - inc Torque Figures, Tyre Pressures, Rated MPG - Page 3 - Saxperience

Barry123 · 9th January 2007, 21:04

Good suggestion dude. I'll add to it when I get some time

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dsh85 · 9th January 2007, 21:49

man 33mpg sucks! really did stretch it to get that too! it was in general normal average driving, a couple of times id expect i will have nailed it but its only fair

diesel coversion as next mod anyone

Barry123 · 9th January 2007, 21:59

Bare in mind you've got a performance few mods.

Barry123 · 6th March 2007, 18:51

On saxo engines as far as im aware, you're slightly better off coasting, although I wouldnt recommend it as the saving is minimal.

On modern engines, leaving in-gear and taking your foot off the accelerator will yeild the highest fuel savings, I heard the engineering goons mention that NO fuel is injected into the cylinder, whether this is true or not is another matter.
plus you get engine braking which saves shaggin your brakes slightly

Graham · 7th March 2007, 00:10

o rite cos ive been doin that for ages and i duno when i got into the habbit of doin it and i jus wondered if that was damagin my car at all lol

MTR · 7th March 2007, 00:43

Only just seen this guide! Top work though and deserving of some rep.
Kupow!

KamRacing · 16th May 2007, 10:39

coasting is never a good idea. Most engines are tuned to run a little rich at idle to help you start off and for when starting the engine.

Also the advanced fuels do aid mpg. A co-worker and I had been doing titanic milage resently. He has been using v-power petrol in his 1.4 206 and I have been using v-power deisel in a 2.5 tds bmw. On regular diesel I get 44mpg and with v-power I can get 49-50mpg. That saves me £100 a year even after paying through the nose for the fuel

Good guide though

Barry123 · 16th May 2007, 10:52

Kam,
the guide is aimed at TU engined drivers, the ecu isnt capable of accepting anything higher that 97RON hence why the premium fuels are not recommended... mainly the price increase over the saving is minimal as the engine cant fully ultise the fuel. which is why i recommend manually adding addtives to the fuel solution.

Yeah there seems to be some small improvements on modern engined cars but even then most have to be mapped to really see the full gains

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KamRacing · 16th May 2007, 11:03

well the 206 TU is no better than the saxo so thats why I mentioned it. My diesel is also 12years old so not particularly intelligent either

Barry123 · 16th May 2007, 11:11

diesel is a slightly different technology as its based on cetane and not octane (although both exist in both petrol and derv) then engine (the old ones such as TUD) have no engine management as such. Its been tested infact on a TUD engine, that bp ultimate did offer gains.

your friend may find going for standard (not cheap tho) fuel then adding a fuel additive even now and again will probably prove more cost effective

ham1 · 3rd July 2007, 23:06

What about turning engine off at traffic lights/queues etc? Does starting up again use more fuel than you save from killing the engine for 5-10 secs?

Barry123 · 4th July 2007, 00:02

Quote:

Originally Posted by ham1

What about turning engine off at traffic lights/queues etc? Does starting up again use more fuel than you save from killing the engine for 5-10 secs?

there is, as I remember, quite a bit of debate over this matter... however... citroen brought out a c3 with a start/stop function recently... basically the engine would cut out at traffic lights and by a light press on the accelerator would kick in again. they reckon decent savings could be made on fuel.

so on that assumption I'd guess that turning off the engine at traffic lights could provide some small gains, although I wouldnt recommend killing the engine if you're at the front of the queue... you might upset the people behind you if they're waiting a while lol

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ham1 · 4th July 2007, 18:17

Hehe yeah if you were at the front or quite near the front then might not be good. Although I read somewhere that in some country its the law, if you are 3rd or more in a queue at traffic lights, to kill your engine.

I suppose also if you are in a queue going down a hill then you could get most of the way with out the engine on.. although that is probably illegal or something...

Barry123 · 5th July 2007, 03:06

Quote:

Originally Posted by ham1

I suppose also if you are in a queue going down a hill then you could get most of the way with out the engine on.. although that is probably illegal or something...

extreme coasting like that is typically frowned upon by the highway code and stuff as most modern cars lose power steering and brake assistance. I remember doing it quite a lot in the C3 only to find that my brakes would quickly fail.

sticking it in neutral could be done however research suggests that leaving the car in gear and letting the car coast actually saves more fuel

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KamRacing · 5th July 2007, 09:26

turn your ignition off and your steering lock will come on. Could get interesting lol

Barry123 · 5th July 2007, 09:28

Quote:

Originally Posted by KamRacing

turn your ignition off and your steering lock will come on. Could get interesting lol

only if your keys are out of the ignition???

KamRacing · 5th July 2007, 09:34

There are a few notches on the ignition.
Off - you can pull the key out and steering lock engages
one notch - power to radio etc
two notches - ignition on
further to start engine.

Personally I wouldnt risk turning too far lol

smearsvtr · 9th July 2007, 15:47

will having a de-cat lower fuel comsumption?

SaxoJamie · 3rd November 2007, 14:02

Good guide mate

What's the best gear to use when driving on a 60mph single carriageway on quite a straight road bar a few bends?. Is it best to leave it in 4th if not continuously holding 60mph but staying closer to the peak torque figure and making the most of engine braking? Please help as I'm confused lol

Barry123 · 3rd November 2007, 15:08

If you're cruising... i.e. maintaining a constant speed... put it in top. that goes for just about any speed except below 20mph or something

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