lol, this is funny, looks like your doing some of this to me:
shows you dont read to well or fully & no you are claiming realistically it will do 26mpg which in itself is ridiculous & complete crap & all we need to prove this is James on 5k miles average mpg which was 16.8, the average is what its always based on always not a quick spirt, but of course you already knew that right????
16-20mpg is the realistic figures, so ragging it you'd expect more like 16-17 but combined I'd say nearer to 20, those are real figures & thats what prospective buyers need to know
& they witnessed these readings for how long exactly, the real time mpg is what matters not for a little joyride, be factual not your little 75 mile trip, thats what matters full stop
& if you read it properly you would see Matt said & I quote "Do your sums on 20mpg and you wont be too dissapointed I reckon" & Dan said 20-25 but realistically if he was to work out as I asked you a full tank whats the average of that, more like 20 I'd say or less, so this is what I said from the get go, this is what you realistically expect from the S4 not your drop head down few second glare at DIS reading
This is taken from a review of the car which says it all interms of overall(namely average) which I also take with pinch of salt as usually less than what audi state on all what 7 VAG cars I've owned:
"Audi quote an overall figure of 21.1mpg, but if you use that throttle pedal anywhere like how it was intended to be used, expect that figure to head south pretty quickly."
Startup rattle is not a fault/issue anyway, its the hydraulic chain tensioner taking the slack out of the chain on startup, also high oil consumption is also not a fault/known problem, its part of the engine, its a v8 4.2 for christs sake, it will burn alot more oil of than a 2.0 tdi as you so nicely put it, have you lifted your bonnet & seen how big that beast is, do you think it wouldnt burn any of, audi estimate about 1 litre per 1000 miles on that engine is actually a fair amount & can go as far as 1 litre for 5k, thats a fact & I can say yes it did pretty much close to that given the oil I stuck in it,
its normal on these cars some of these things, stop spirting BS to would be buyers & actually quote facts, the buyers think oh damn has all these issues but I get amazing economy, come back to the real world or just dont comment at all cause you're just confusing buyers who want real time facts not speculation