LOVXR6T

Was looking at the new BA sedans on the weekend when I noticed that the XR6 Auto uses 12.6ltrs per 100km but the Fairmont Ghia Auto was only 11.5ltr per 100km. I would of thought the Fairmont being a heavier car would chew more petrol.
Can anyone explain this?
I know the XR6 has a smaller diff ratio but I wouldnt of thought it would use more than a 1ltr per 100k.
Cheers
Glenn

xcgxl

That's what it would be, the XR6 has a lower diff ratio. They would weigh pretty much the same as today's XR6s come standard with most of the Fairmont stuff. Except for the analog XC clock, lol.

__________________
1978 XC Fairmont GXL, Emerald green, Jade Int. 351C, 750 VAC, C10, 9" LSD
Air, steer, power windows................

XR6000

I guess the higher drag coefficient produced by the XR6 bodykit also doesn't do it any favours.

Gambit

In my fiance's xr6 manual on a 2200?km trip we averaged 9.5l per 100km.

LOVXR6T

if it is the diff ratio, it would be worth it if the XR6 was a quicker car than the XT, but it ant :( So now I wondeer why they did it.

supermono

Forget the diff ratio, from the Ford website.

2. Drive ratio for Falcon XT, Futura and Fairmont automatic transmission: 3.23:1

3. Drive ratio for Falcon XR6 and Fairmont Ghia automatic transmission: 3.45:1

Note the manual transmission models use the same 3.45 as the Auto XR6 and Ghia.

Maybe it's just a touch of reality, XR6 drivers are hoons?

__________________
I may be old, but at least I'm stupid!

GT40

I got my XR6na (Manual) a year ago and it had 13,000 on the clock, I've done another 27,000 with 80% city driving, according to the 'trip readout' it only averages 43km per hr but is getting 11.7ltrs per 100kms.

I'm very happy with the fuel consumption after reading some of the figures people have mentioned on this forum.

xcgxl

OK, so you have just said that the XR6 and Farimont GHIA have the same diff ratio, 3.45:1 which is lower then the regular Falcon and Fairmont (which have 3.23:1). So why do you say "forget the diff ratio?" We are saying that the 3.45:1 diff will use more fuel then the 3.23:1 because the wheels are turning more times per Km, that's right 3.45:1 is LOWER than 3.23:1. Some say "numerically higher" but the gearing is LOWER.

__________________
1978 XC Fairmont GXL, Emerald green, Jade Int. 351C, 750 VAC, C10, 9" LSD
Air, steer, power windows................

dawal5

i changed my diff from 3.23 to 3.73 and under the same driving conditions i now get about 30kms less out of 60 litres of fuel.

however i must add after i got the flash that just about halved that differnce.

__________________
2003 BA FUTURA. Harvest Green, Lowered with Kings springs and Koni shocks, 18" GT-P mag wheels, XR front bar headlights and grill, XR rear spoiler, Fairmont Bootlid trim, XR6T snorkle, Typhoon second CAI, K&N filter, Pacemaker extractors with Herrod cat back, 3.73 LSD & CAPA FLASH with custom tune. ALSO 12" dual voice coil kicker, JL 5x7's and 1800W of amps!

LOVXR6T

didnt realize that the xr6 and fairmont ghia had the same diff ratio so now I am very confused about why the fuel consumption sticker on the xr6 is higher than the fairmont ghia. 11.5ltr per 100k for the ghia and 12.7 for the xr6??