calling all experts!! im getting paranoid, since i changed the wheels(now 17") shocks and springs on my 1.5 about a month ago im only getting about 300miles off a full tank where i was getting nearer 350 before. weird thing is it seems to be getting even worse. nothing visually appears wrong and i wouldnt say ive started driving like an a**e. any ideas??

thanks in advance

there has been a thread on this subject befor try doing a search on fuel efficiency on the forum

John

My average is just 320 miles to a tank on a 1.8 so u should be worried. Im on 17s as well

Are you using same fuel ? just a thought cos I have changed fuel this month and have had more MPG and better performance, has cost me more tho. Also I put 17" on my V6 and the rolling diameter is different so that could make a difference on economy too.

V6, Ecotek, FSE, SS Filter cone, SS Exhaust, Optimax, Bosch Super 4s, Power Green magnet-on-the-fuelline-thingy: 27.1 MPG Average (60% Uban, 40% Extra urban)


Need to re-check the figres AFTER the exhaust now so I have a feeling it's more like 26 MPG now.......

cheers....it hurts specially with fuel prices rising

17" wheels, sticky Toyos (though not as super-sticky as the Eagle F1s...... I miss my Goodyears..)

Max 300 miles per tank now.

How many litres do you class as a tankfull then ?

I usually put about £30 to £35 in roughly about 40 litres and get 250 miles, usually fill her up before the light comes on.

just filled her up this morning (light just flicking on and off so she wasnt completely dry) 40 litres 36quid........its juts making me real paranoid

Mines is getting really bad now too. FSE valve, BMC-CDA induction kit, Ecotek, Full S/S System with Decat and 17s I get about 240 miles for a full tank....if I'm lucky!

Could be that your FSE i sturned up too high and you're running 'rich' at the moment (must be rich to buy all that fuel!! :P) Perhaps the Decat isn't helping and you're spitting all the fuel out the exhaust!:lol:

Gogo; I class a full tank as 30miles AFTER the light comes on; takes about 48 litres out of the total 55litre capacity (though you can't really use the last 5 as the engine gets fuel-feed problems under acceleration then!:shock:)

I also rarely step over 4000 revs..... so don't feel too bad if your consumption is higher than mine if you drive at 4500RPM - 7000RPM on a regular basis!!:twisted:

lmao you been serious there ?? if so am :O lol you rarely go over 4,000 rpm ??

Mine rarely stays under 4,000

i rarely go over 3000 rpm unless I want some fun :twisted:

I must drive like a 60 year old or something, I can get 380 miles out my 1.8 exec. When I fill it it only takes about 10 gallons (45- 46 litres). Thats using 10W30 oil and ZX oil additive.

I do tend to drive a lot on motorways as well.

Ian.

I get about 260 miles on a full tank (~ 40L) - 98 1.5 GLX

Ninjaadam; Thank you! I don't go over 4000 unless I wanna have fun and sitting in traffic revving the nuts off the engine ain't much fun.... ....unless you wanna think that, somehow, you're actually IMPRESSING those cute girls walking along the pavement.... (HINT: You're NOT!!:D)

I'm afraid that the daily commute through town is hardly the time or place to use maximum torque!!

Murf must be driving at 6000RPM!!:lol:

........and JohnLi IS driving like an old man!:P (do you live high up in Glasgow? I used to live there a long time ago and remember it being very hilly; high altitude tends to lean the fuel mixture a little more hence why people try to test BHP on cars at sea-level)

Motorway driving will always return better MPG as the engine doesn't have to work so hard to move the 1160KG + fuel, driver and stuff in the boot compared to stop/start driving in town where the car has to haul the entire weight from standstill (to move a few feet before stopping again:roll:!).

[quote="JohnLi"]I must drive like a 60 year old or something, I can get 380 miles out my 1.8 exec. When I fill it it only takes about 10 gallons (45- 46 litres). Thats using 10W30 oil and ZX oil additive.[/quote]

380 Miles !!! You jammy bugger - I'm lucky to get 380 Km's ...

Well My daily route is about 25 miles to work, out on to the Dual carriageway, then onto Motorway, off and in to work, so I have to a mixture of driving. plus My car drives well in 5th between 4000-5000 rpm you can estimate from there lol.

Smotter - 380Km's from what, a full tank, jeez I though my 200km's from 22litres was a little heavy - maybe I'm just a spoilt from driving a 1.4 Astra. Costing a little more now to get those 200km's but anyway.
gogobroom - 4000-5000rpm in what gear? In my 1.8 in 5th and the same rpm I'm doing between 150km/h and 175km/h and you're in a V6 - hopefully there're no speed cameras on your highway!

[quote="ghost"]Smotter - 380Km's from what, a full tank, jeez I though my 200km's from 22litres was a little heavy - maybe I'm just a spoilt from driving a 1.4 Astra. Costing a little more now to get those 200km's but anyway.[/quote]

I usually fill up when the fuel light stays on more than it goes off (when the needle has been below the empty mark for about 40 km) , and normally she takes about 45 litres ... She's a thirsty beast !

Smotter, I get the same consumption as you... Really sad with our crazy petrol prices... I think we have had about 10 petrol price increases this year. We must organise a meet sometime!!

[quote="Astina RSA"]Really sad with our crazy petrol prices... I think we have had about 10 petrol price increases this year.[/quote]
It may seem bad, but bear in mind that the poor buggers in the UK are paying around 85 to 90p a litre, which is nearly R10.00 a litre - about double what we pay !

[quote="Astina RSA"]We must organise a meet sometime!![/quote]
Definately - Maybe a Sunday breakfast run or such ? I tried to set something up with the Gauteng members about a month back, but didn't get much response ...

Oh yeah - regarding consumption - we should bear in mind that here on the Highveld, we are driving 2 Km's up in the air ! Consumption would probably be better on the coast ...

I'm hoping things will improve when my tax rebate comes through, and I get a Unichip fitted !!!

True, I guess...

I've got a Unichip on mine. Its great when you drive nicely, else your car goes like hell, but you can almost watch your fuel gauge going down...

Who is gonna do the chip for you?

Where abouts do you stay? Im in Randburg. B-fast run sound very good!

Cheers
-Brad

Hi Brad - You sound dubious about your Unichip - would you say it's worth the expense ? Everyone I've spoken to reckons it improves performance AND economy - is this correct ? By the way, where did you get your's fitted ??

evening all

i have just done the first really long trip in my v6 since buying it about 6 months ago, driving normally to and from work and aroungd and about in general i tend to get between 250 and 270 miles from a full tank depends on how hard you drive i guess.

on the motorway cruising along at about 4000rpm i got about 300 to 320 from a tank. have got to say i was really impressed at how smooth it ran on the m-way and how much acceleration there was past 4000 even in fifth, aggrivate and she will go!!!

I don't see how it can improve performance AND economy at the same time. If you drive nicely it leans out your mixture, saving fuel. If you hammer it, it puts plenty petrol into your engine to make it go better. Thats how I understand it.

My consumption is not very good with the chip, & I don't drive hard that often.

I bought the car with the Unichip in, so I'm not sure what difference it makes. Maybe we should organise a race sometime.

I'd say go to the actual Unichip manufacturers in Pretoria, they charge around R1850 for chip, install & setting up.

-Brad

[quote="Astina RSA"]I bought the car with the Unichip in, so I'm not sure what difference it makes. Maybe we should organise a race sometime. [/quote]
Cool - How about Westcliff Drive from Greenside to Jan Smuts by the Zoo sometime ?

[quote="Astina RSA"]
I'd say go to the actual Unichip manufacturers in Pretoria, they charge around R1850 for chip, install & setting up.[/quote]

Does that R1850 include VAT, and have you got any contact details for the Pretoria place ? I was planning to go to Rob Green in Strydom Park, for R2100 excl. VAT ... Mind you, Rob Green does have quite a reputation for setting up cars right ...