Club G40 Forum

Club G40 => General Car Chat => Topic started by: Alexiskayak_7 on March 16, 2011, 04:37:35 pm

Title: Fuel consumption question
Post by: Alexiskayak_7 on March 16, 2011, 04:37:35 pm
How much fuel (litres/60miles) a well maintened, stock G40 , needs with 80-95 mph motorway drive?
Title: Re: Fuel consumption question
Post by: Etches on March 16, 2011, 05:24:17 pm
I managed from £20 last weekend which was more or less 3 gallons of fuel 170 miles
Title: Re: Fuel consumption question
Post by: Alex on March 16, 2011, 05:47:19 pm
I've achieved consumption as low as 5.6litres per 100km driving through Belgium, but it's usually between about 7 and 8.
Title: Re: Fuel consumption question
Post by: Alexiskayak_7 on March 16, 2011, 06:01:05 pm
Really? I thought that i should see 8-9 litres... In case that you didn't noticed i'm talking about 80-95mph...
Isn't your cars, both tweaked guys?
Title: Re: Fuel consumption question
Post by: scotsjohn on March 16, 2011, 06:08:38 pm
I'd be looking at 10 litres at that speed in a stock G.
Title: Re: Fuel consumption question
Post by: Alex on March 16, 2011, 06:10:51 pm
Obviously the trip through Belgium was at 70mph and just cruising, not ragging it. But I don't see much over 8 even if I'm driving around town. And yes mine's modded.
Title: Re: Fuel consumption question
Post by: Alexiskayak_7 on March 16, 2011, 06:32:20 pm
@etches: You burn only 4.2 litres/60miles??? or i am calculating something wrong?
@Alex: That figures (7-8L) is with 70mph motorway driving only?
@John:10 litres!!!? What a modded g40 should expect in that speed?
Title: Re: Fuel consumption question
Post by: Etches on March 16, 2011, 07:05:58 pm
Well the maths says that for every gallon (4.54 litres) i got 49.54 mpg at 75-95mph so for 60 miles its roughly

5.70 litres
Title: Re: Fuel consumption question
Post by: Justin14100 on March 16, 2011, 07:08:00 pm
Quote from: etches69 on March 16, 2011, 07:05:58 pm
Well the maths says that for every gallon (4.54 litres) i got 49.54 mpg at 75-95mph
wow is that what a standard G can do?
best i can get is 40mpg
Title: Re: Fuel consumption question
Post by: Etches on March 16, 2011, 07:15:33 pm
well mines a proven 135bhp just got a smaller pulley n chip to suit.
Title: Re: Fuel consumption question
Post by: Alexiskayak_7 on March 16, 2011, 07:29:10 pm
Quote from: etches69 on March 16, 2011, 07:05:58 pm
Well the maths says that for every gallon (4.54 litres) i got 49.54 mpg at 75-95mph so for 60 miles its roughly

5.70 litres

Ooooh... I thought that a gallon=3.78lit, i did't knew that british gallon had a different rate...!
Btw.. I burn, 6.5L but with 60-70mph... I can't understand.. Stock chip/pulley, new λ, new blue temp sensor, well set co, cleaned injectors.. Is there anything that i haven't replaced that effects fuel consumption...?
Title: Re: Fuel consumption question
Post by: Justin14100 on March 16, 2011, 07:37:18 pm
Quote from: Alexiskayak_7 on March 16, 2011, 07:29:10 pm
Quote from: etches69 on March 16, 2011, 07:05:58 pm
Well the maths says that for every gallon (4.54 litres) i got 49.54 mpg at 75-95mph so for 60 miles its roughly

5.70 litres

Ooooh... I thought that a gallon=3.78lit, i did't knew that british gallon had a different rate...!
Btw.. I burn, 6.5L but with 60-70mph... I can't understand.. Stock chip/pulley, new λ, new blue temp sensor, well set co, cleaned injectors.. Is there anything that i haven't replaced that effects fuel consumption...?
your maths? haha sorry.
tires can make a quite big difference to consumption, good brand / pressure. i found induction kits also increase consumption
Title: Re: Fuel consumption question
Post by: scotsjohn on March 16, 2011, 08:38:22 pm
A straight motorway run from Hamilton to Exeter(400 miles) in my standard G used 13,5 gallons at an average 80mph. That's approx. 6.5 miles /litre. Noodling along at 40/50mph max I once got 48 mpg//10miles/litre.
Title: Re: Fuel consumption question
Post by: Alex on March 18, 2011, 11:34:37 pm
Quote from: Alexiskayak_7 on March 16, 2011, 06:32:20 pm
@Alex: That figures (7-8L) is with 70mph motorway driving only?
Between 70 and about 85-90mph depending on the road. But yes.
Title: Re: Fuel consumption question
Post by: GR40 on March 22, 2011, 02:26:08 pm
I bet you are sorry now for your good looking 14" rims!  ;D
Title: Re: Fuel consumption question
Post by: Alexiskayak_7 on March 22, 2011, 02:42:08 pm
Hahaha... There's nothing wrong with the 14''s Mr.Alex...To be honest i haven't noticed any difference in fuel consumption after fitting the 14''s...
The problem is the increasing fuel price my friend! ;D ;D ;D
Title: Re: Fuel consumption question
Post by: ereeiz on March 23, 2011, 11:51:22 am
I'm getting ~280 miles a tank (40 litres +/- 1litre). Mostly hard driving or 80-90 on motorway

Only mod on mine so far; derestricted the outlet on the airbox and took the feed off the back of the headlight
Title: Re: Fuel consumption question
Post by: Justin14100 on March 23, 2011, 12:46:42 pm
Quote from: ereeiz on March 23, 2011, 11:51:22 am
I'm getting ~280 miles a tank (40 litres +/- 1litre). Mostly hard driving or 80-90 on motorway

Only mod on mine so far; derestricted the outlet on the airbox and took the feed off the back of the headlight
no kidding, my averaged went up after putting that feed behind the headlight back on
Title: Re: Fuel consumption question
Post by: Alexiskayak_7 on March 23, 2011, 04:15:11 pm
And the same happens with the derestriction of the airbox...
Title: Re: Fuel consumption question
Post by: ereeiz on March 23, 2011, 06:34:03 pm
Makes sense I suppose, more air = more fuel