Fuel consumption question

Alexiskayak_7 · March 16, 2011, 04:37:35 PM

How much fuel (litres/60miles) a well maintened, stock G40 , needs with 80-95 mph motorway drive?

Etches · March 16, 2011, 05:24:17 PM

I managed from £20 last weekend which was more or less 3 gallons of fuel 170 miles

Alex · 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.

Alexiskayak_7 · 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?

scotsjohn · March 16, 2011, 06:08:38 PM

I'd be looking at 10 litres at that speed in a stock G.

Alex · 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.

Alexiskayak_7 · 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?

Etches · 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

Justin14100 · 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

Etches · March 16, 2011, 07:15:33 PM

well mines a proven 135bhp just got a smaller pulley n chip to suit.

Alexiskayak_7 · 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...?

Justin14100 · 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

scotsjohn · 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.

Alex · 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.

GR40 · March 22, 2011, 02:26:08 PM

I bet you are sorry now for your good looking 14" rims!