D3 S8 - V10 Mileage per Gallon?

Singh · #1 15th October 2011, 12:41 PM

I don't think the 3.7 A8 is really that more economical then the 4.2 A8 is it? Probably 1 mpg in it so I'd rather have the 50?BHP

Architex_mA8tey · #2 15th October 2011, 12:44 PM

Quote:

Originally Posted by Singh

I don't think the 3.7 A8 is really that more economical then the 4.2 A8 is it? Probably 1 mpg in it so I'd rather have the 50?BHP

says the man whose BMW couldnt keep up with my A4. . . .

Singh · #3 15th October 2011, 01:22 PM

Exactly my point, my BMW (which i got for its fuel economy - not performance) was 50 BHP short on your A4 but as it also does 20 MPG more then your A4 it makes the 50 BHP difference worthwhile, and now I've remapped it, the MPG is even higher and it's 50 BHP up. That A4 was a seriously quick car though

Architex_mA8tey · #4 15th October 2011, 01:45 PM

Quote:

Originally Posted by Singh

Exactly my point, my BMW (which i got for its fuel economy - not performance) was 50 BHP short on your A4 but as it also does 20 MPG more then your A4 it makes the 50 BHP difference worthwhile, and now I've remapped it, the MPG is even higher and it's 50 BHP up. That A4 was a seriously quick car though

But then if youre gonna say that you cant moan about the S8's gearing as surely you choose an S8 for power and an A8 more for comfort. I chose mine for wafting around rather than blatting around the Nurburgring, and based my choice upon just wanting effortless luxury cruising and the toys. I also chose it because i liked the interior half leather and alcantara more than other interiors I had seen. I guess at the end of the day we all have different reasons for choosing a car im just saying dont moan at Audi for producing a lower gearing in the S8 than the A8 when thats what the car was about - I guess most owners who bought them new werent worried about the mpg as much as today too!

Singh · #5 15th October 2011, 02:14 PM

I agree, noone buys an S8 for economy, but when a 4.2 A8 will do 30 MPG on a run and an S8 will only do 24 with the same driving style, that's a fairly big difference, a difference of £17 every tank (based on 350 Miles) now my RS 6 is a heckuva lot faster then an S8 and still has A8 gearing making it more economical then an S8 with 120 BHP more. IMO the S8 in 'D' at motorway speeds should sit at the same RPM as an A8 and the option for the sports gearing should be given to the driver via S mode. When you've had both an A8 and S8 and your making the same progress but it's costing so much more it is a little annoying, fair enough if the S8 had a bigger engine with higher displacement and cylinders, but with more or less the same 4.2 V8 30 vs 24 MPG isn't right, I can see why Audi geared it like that and as Neil says,maybe it's more of a problem with today's fuel prices then it ever was in the late 90s.