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I've had a look on YouTube and there is precious little footage of the two Audi stablemates against each other!

The reason why i was looking is that a friend with an RS7 Performance sent me of a clip of him from a roll to about 100 leptons against an RS6 with an alleged 750bhp and, rather disappointingly, the RS6 gets the initial jump yet still 'loses'.

Is there a big weight difference between the cars? And is anyone willing to volunteer themselves as the owner of a mapped Nardo grey RS6 by a "company in Romford"?!

In standard guise I'd imagine them to be exactly the same?

0-60 is certainly exactly the same, if the RS7 was noticeably lighter then it would get to 60 quicker no?

On paper they have the same power and same acceleration. But the RS7 is slightly lighter and more aerodynamic (just a guess) so I'd expect there to be a very slight difference but this could easily be offset by the weight difference of drivers / optional extras fitted etc.
I don't think you see many comparison videos as the rs7 seems to be quite rare in the UK, and in America where the RS7 is more common, the RS6 isn't sold at all

RS7 is like the Panamera

They look so much better in the flesh and don't photograph well.

So many variables & what's to say the RS7 wasn't also tuned as i know a few are.

The RS6 driver could have fluffed a gear change, lost traction on an upshift or the car had a slight hissy fit at some point. Only what 6-7secs in a roll to 100mph so anything could have lost a second or 2 & given light to the result.

Like for like the RS7 must be more aerodynamic, so at higher speeds with similar outputs i could imagine the RS7 would gather an advantage, albeit only slight.

Could also me more to the 'alleged' 750bhp quote, perhaps the map had been overwritten during a service/software update & he's now running stock or his car's poorly.

I agree with that, i doubt it really does have 750bhp, but i think the minimum i have seen for a map is 650bhp?

I can say the RS7 Performance is completely stock, and i don't know how you can fluff a change in an auto!

Quite possibly traction issues in the RS6 that would do that. Not easy to accelerate in a 750hp car in a UK winter.

The RS6 with a true 150hp more would go walkies 60+, horsepower comes into its own the higher the speed you go.

robf wrote:I agree with that, i doubt it really does have 750bhp, but i think the minimum i have seen for a map is 650bhp?

I can say the RS7 Performance is completely stock, and i don't know how you can fluff a change in an auto!

If it's Stage 2 tuned knowing what most quote it would be likely be around the 730-750 mark (depending on aftermarket parts such as DP's etc.) & Stage 1 usually around 640-660, although i'm not sure if being a PE alters this but i'd very much doubt it.

As for gear changes, one would assume to make the quickest progress in a drag race you'd be in max attack Sport mode & using the paddles wouldn't you? That being the case perhaps he grabbed the next gear at the wrong time or missed it altogether & i assume the car under sufferance then auto shifts when you hit the limiter which in a 7sec run would knock a second or 2 off.

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robf wrote:I agree with that, i doubt it really does have 750bhp, but i think the minimum i have seen for a map is 650bhp?

I can say the RS7 Performance is completely stock, and i don't know how you can fluff a change in an auto!

I can attest that during a drag race when using manual rather than having the box in sport and letting it do its own thing, hitting the limiter really does affect the end result quite dramatically!! There is a fine line between getting the most out of the higher revving top end of the Performance engine and slamming into the limiter wall!

As for the aerodynamics, the lines of the Avant actually cause less high speed turbulence coming off the back of the car than the lines of the Saloon so in theory, the RS6 should do better the higher the MPH goes up.

1. BS on the 750bhp map if it can't hold off a 'stock' Performance edition of RS6 or 7.

2. Head to head stock cars will be close enough over maybe 10 times you'd think they'll even out to a draw. Any changes in tyres, options, fuel quality, actual specific output of the engines etc etc etc will all be minimal but could potentially add up to a significant advantage to one or the other though, but I can't image you can just say "RS6 is faster than an RS7" or the other way round.

W8PMC wrote:
As for gear changes, one would assume to make the quickest progress in a drag race you'd be in max attack Sport mode & using the paddles wouldn't you?

Slightly confusing as you say you'd be in sport mode and using the paddles; sport mode would imply the gearbox is in auto but using paddles would imply manual mode.
I'm going to assume you mean engine in Dynamic but gearbox in manual. Why would you use the gearbox in manual mode in a race? Surely the car will give the perfect shift everytime with wide open throttle and with the gearbox in sport mode? I imagine some people might think they can shift at a better point than the car can but I'd guess that the car will consistantly shift up as it hits the red line and never hit the limiter or shift too early. Even if the best shift time is fractionally before the red line, the chances of a human hitting that acurately enough to outweigh the benefits of it being in Sport auto mode will be pretty slim.
Agreed that if it was a race around a circuit then I might use manual mode as this would give me much better control for the downshifts and anticipating up / down shifts before / after a bend etc, but in a straight drag race I'd be in auto and just plant foot and let the car do the rest.

MikeFish wrote: Slightly confusing as you say you'd be in sport mode and using the paddles; sport mode would imply the gearbox is in auto but using paddles would imply manual mode.
I'm going to assume you mean engine in Dynamic but gearbox in manual. Why would you use the gearbox in manual mode in a race? Surely the car will give the perfect shift everytime with wide open throttle and with the gearbox in sport mode? I imagine some people might think they can shift at a better point than the car can but I'd guess that the car will consistantly shift up as it hits the red line and never hit the limiter or shift too early. Even if the best shift time is fractionally before the red line, the chances of a human hitting that acurately enough to outweigh the benefits of it being in Sport auto mode will be pretty slim.
Agreed that if it was a race around a circuit then I might use manual mode as this would give me much better control for the downshifts and anticipating up / down shifts before / after a bend etc, but in a straight drag race I'd be in auto and just plant foot and let the car do the rest.

Mike, you can use the paddles in Sport mode but - IIRC - the auto shift-up function remains, whereas it will sit on the rev limiter in manual. I can't be sure as I never leave Auto myself.

However, I think you are spot on about letting the box do the shifts. The ZF8 in this configuration has about 40 shift programmes to choose from and one of those is max acceleration, WOT, whatever. I can't imagine anyone beating the box by choosing their own shift timings. I think the belief that it can be done stems from the old-school autos that simply shifted on basic parameters like engine revs and throttle position.

Yes you are right, you can use the paddles in any mode but being in sport mode at the time doesn't make it any faster than being in proper manual mode.

Yep, i agree you can't beat the 'box. I'm going to ask my mate to see what he was doing, but i think the conclusion is the 750bhp claim is BS.

For a standing start drag race, Sport auto mode is the way to go but if doing a 40-50mph roll on, you need to be in manual with the right gear selected to get the best out of the engine and there is no kick down going on as you start.