RE: Diesel replaces V8 in new Audi S6 and S7

RE: Diesel replaces V8 in new Audi S6 and S7

Thursday 11th April

Diesel replaces V8 in new Audi S6 and S7

Ingolstadt ditches petrol in favour of electric-powered compressor tech



Just when it looked like diesel might have died a death as far as performance cars are concerned, Audi - and, by extension, Volkswagen - have made it clear that they still see life at the end of the oil-burning tunnel. Having already introduced a V8 TDI Tourareg and diesel SQ5 (again), Audi has revealed a new S6 and S7 that will be powered exclusively by a 3.0-litre TDI. 

This being a 2019 diesel Audi though, it’s not your regular oil burning old nail. Like the SQ7, these S models use an electric powered compressor, which responds in 250 milliseconds to provide a boost at revs up to 1,650rpm. Essentially it’s there until the exhaust turbo is up to speed: “The EPC supports the TDI’s turbocharger whenever there is insufficient energy in the exhaust gas for spontaneous torque buildup – when starting off or accelerating at low load, from a low engine speed” is how Audi describes it. Working in conjunction with the regular turbo – Audi rather confusingly calls it ‘dual supercharging’ – the EPC provides the S6 and S7 with 516lb ft from 2,500-3,100rpm. Essentially, therefore, it’s a lot like the SQ5 installation. Or sounds like it, at least.


Unlike the SQ5, but along similar lines to the SQ7, these cars use the 48v mild hybrid system with belt alternator starter and lithium ion battery. The former can recover up to 8kW of power when the car is slowing down, storing energy in the latter. Audi claims the technology allows for start-stop operation from 14mph, and a fuel saving of up to 0.4 litres (presumably per 100km) in “real driving conditions.”

All together, Audi says the S6/7 powertrain is good for 349hp, meaning five seconds flat to 62mph for the S6 saloon, or a tenth more for the S7 and S6 Avant. The important efficiency numbers range from 43.5-45.5mpg and 164-171g/km depending on model and wheel size.

Keeping up? Good, because there’s a little more. Like all S Audis, these S6s and S7 use quattro with a self-locking centre diff (and up to 85 per cent of the power going back), but there’s a brace of firsts as well: adaptive air suspension hasn’t been seen on an S model before, and is available here as a “comfort-oriented alternative” to the standard 20mm lower sports set up, and there’s all-wheel steering as an option, too. Audi says the technology, working in conjunction with dynamic steering, makes the cars “more manoeuvrable and agile at low speeds, and provides more directional stability at high speeds when changing lanes.” Seems a little superfluous for cars that will never leave the outside lane, but there we are. Those new inclusions join the familiar sport diff, optional ceramic brakes and drive select in the S6 roster of dynamic tech.


It’s business as usual for the styling, too, the S6 and S7 identified by four exhausts, silver mirrors, a new grille and larger – 20-inch as standard, 21s as an option – wheels to mark them out as something a little racier.

Audi will launch the S6 Saloon, S6 Avant and S7 Sportback this summer, with prices kicking off at 76,500 euros in Germany – expect UK prices shortly. Interestingly, these new uberdiesels will be Europe-only, too - the US, Asia and Middle East get the RS4’s 2.9 TFSI petrol with 450hp. Curious. Still, don’t be too disgruntled – the RS6 isn’t far off, either, and one or two V8 S6s are available - this 2018 saloon is barely run in, and already less than £40k...










Author
Discussion

Thunderhead

Original Poster:

266 posts

51 months

Thursday 11th April
quotequote all
What a strange choice given the scrutiny diesel is coming under, surely more battery power and less diesel motor would have been a better choice.

downhillmalins

124 posts

86 months

Thursday 11th April
quotequote all
This could have been a great one to release on April 1st

Sadly its reality! I wonder what all the engineers that developed the V10 N/A S6 think of this new one...

dunnoreally

272 posts

48 months

Thursday 11th April
quotequote all
Car industry's going through a lot of changes which many of us find kinda troubling but that you can at least argue are ultimately for the best even disregarding the environmental side of things. NA to turbo, ICE to EV and so on. Replacing a pair of v8 petrol saloons with diesel bloody hybrids, though? I'm going to be very interested to hear someone argue how this is supposed to be in our best interests as enthusiasts!

Krikkit

14,778 posts

121 months

Thursday 11th April
quotequote all
Why not a V6 petrol with the same tech? Weird choice.

Wills2

15,488 posts

115 months

Thursday 11th April
quotequote all
I heard on another forum that the S4/5 will be going the same way all S models will be diesel, they have to get their average C02 down across the board to meet the EU targets I don't think petrol cars will achieve that. (not sure if that's verified but this launch appears to signal it might be)


I think the S6 Avant looks great and a perfect long distance car plenty of range and power/torque.






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Pica-Pica

4,736 posts

24 months

Thursday 11th April
quotequote all
Krikkit said:
Why not a V6 petrol with the same tech? Weird choice.
4 tailpipes for a 6 cylinder is more weird.

wab172uk

1,249 posts

167 months

Thursday 11th April
quotequote all
2 things for me.

1) Talk about being left cold by a car story. How uninteresting are these cars?

2) As if further evidence was needed that prices of cars have got ridiculously expensive. Starting price 76,500 Euros. !!!! So about the same here then. Unless they bump up the price by blaming "BREXIT"

Iamnotkloot

266 posts

87 months

Thursday 11th April
quotequote all
I'm definitely in the 'backwards step' camp on this one.

fernando the frog

143 posts

8 months

Thursday 11th April
quotequote all
what a weird decision..

also that s7 is a monstrosity

JaguarsportXJR

232 posts

83 months

Thursday 11th April
quotequote all
Wills2 said:
I heard on another forum that the S4/5 will be going the same way all S models will be diesel, they have to get their average C02 down across the board to meet the EU targets I don't think petrol cars will achieve that. (not sure if that's verified but this launch appears to signal it might be)
I wouldn't have thought these would sell in sufficient numbers to make much of a dent in the overall CO2 figure for the company. I'd think it's been done more to satisfy the people who brag about how economical and fast their car is rather than how much fun it can be.

Triumph Man

5,668 posts

108 months

Thursday 11th April
quotequote all
I excitedly thought it would be a V8 diesel...

Harry H

1,560 posts

96 months

Thursday 11th April
quotequote all
Somebody in product planning has surely lost the plot.

Stu08

338 posts

57 months

Thursday 11th April
quotequote all
Absolutely love that Audi have done this with their S models. Good to see diesel still being invested in and the addition of hybrid technology compliments and boosts an already great torque output - seems like a great match to me.

TheBALDpuma

5,231 posts

108 months

Thursday 11th April
quotequote all
I thought this was an old story from the 1st of April too! Fairly often I'm dissapointed by decisions made by big car manufactuers and their performance cars (more turbos, less CC, no manual option etc) but I can always understand the economic/marketing reason behind them. But this just seems like a really odd one especially in the current climate. I just can't see these being as popular as the petrol predecessors.

matrignano

1,962 posts

150 months

Thursday 11th April
quotequote all
V8 -> V10 -> Twin Turbo V8 -> "twin charge" V6 diesel

Makes similar power as the SQ5 and S4/S5, which are one rung down the Audi ladder.

The upcoming RS6 is said to produce 650hp, 300 more!!!

This doesn't make any sense

Edited by matrignano on Thursday 11th April 12:09

Plate spinner

13,048 posts

140 months

Thursday 11th April
quotequote all
Looks like VAG have just plowed too much £ into diesel tech to turn away from it just yet...

Weird though, will be interesting to see if they sell well or not.

Tomatogti

287 posts

109 months

Thursday 11th April
quotequote all
There's a huge difference between this and the RS equivalents then? 349bhp here but surely 600+ in the RS?

Also a kick in the teeth when Europe get 349bhp diesel hybrid, ourside Europe get 450 bhp petrol!

Interesting whilst I see more S4/5 then RS4/5. I see more RS6/7 than S6/7 so perhaps this is the reason for a different strategy?

mrclav

766 posts

163 months

Thursday 11th April
quotequote all
I think the "bring down average CO2" theory posted above makes a lot of sense.

On another note I'm curious to know what the two black rectangles either side of the four rings logo at the front are?

WCZ

6,426 posts

134 months

Thursday 11th April
quotequote all
no thanks.
not even a step forward power wise or anything aside from economy tbh

aaron_2000

2,880 posts

23 months

Thursday 11th April
quotequote all
I love a quick diesel, but what's so special about this? They have the 4.0 V8 diesel that would've been great for this. I'd be really into it if it wasn't an S car, but as an S car it just leaves me a little too cold.