TORN BETWEEN TWO CARS. S7 or S8

[emceus]

Hey guys I need your help with what would you chose between S7 or s8 used or (cpo)

They have similar options of your liking and color
What car would you spend the next 50,000 miles in for the next 14months

Explain why? In

1.performance
2.style
3.comfort

[gta7]

Neither. Get an RS7, beats out both on performance and style. Unless you have a large family that needs the S8 rear headroom it's a very big car.

I may go from the rs7 to the S8 in a few years when the kids are bigger but I couldn't imagine commuting daily in such a large car.

[Ze_Nardo6]

Style is a personal item. S8 > RS7 for me

Since you're asking S7 or S8, definitely S8. If you can swing an S8 Plus, that's the ultimate

[emceus]

Hmm

[zoomzoom!]

ABSOLUTELY go with S7, without question.

Or maybe the S8.

Get the one you like better.

[jorgemachete]

Been behind the wheel of my '17 S7 for just over a month now. Love it. I came from a 16' A7. Everyone has their own cup of tea when it comes to these cars. The question for you would be whether you are attracted to the hatchback design or not. I personally admire it and think its one of the most unique designs on the road. I haven't driven or been in an S8 but I've been in and driven an A8L. The platform is great, comfortable, and spacious. Can't really go wrong either way but its a question of traditional styling vs non-traditional. The S7 will definetly draw more eyes. If you're interested in a bit more flash, S7 is the way to go. If you want to stay under the radar, S8 is the way to go....until you hit the gas that is.

[Kevin1]

Easy choice, S8.

[emceus]

Been behind the wheel of my '17 S7 for just over a month now. Love it. I came from a 16' A7. Everyone has their own cup of tea when it comes to these cars. The question for you would be whether you are attracted to the hatchback design or not. I personally admire it and think its one of the most unique designs on the road. I haven't driven or been in an S8 but I've been in and driven an A8L. The platform is great, comfortable, and spacious. Can't really go wrong either way but its a question of traditional styling vs non-traditional. The S7 will definetly draw more eyes. If you're interested in a bit more flash, S7 is the way to go. If you want to stay under the radar, S8 is the way to go....until you hit the gas that is.

Very true I currently own a A7 and I like the hatchback, how is your experience from A7 to S7 ?


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[jorgemachete]

Superb! I really didn't get the hype of the V8 engine till I was behind the wheel. Beside the speed, there's an adrenaline rush you get from feeling the rumble of the engine.

[gta7]

I agree going from a '16 A7 to a '16 RS7 was worth every penny. Love the feel, sound and power of the V8tt.

I also test drove a 4.0t A8L and it was an impressive beast!!

[p3u]

S8, totally different league from the S7.

[bonafyd]

S8 for sure!!

[Chris Morales]

Uhh, S8. Come on. Especially if it's an S8 Plus.


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[A6sport]

We own an A8L and "the A7plus" The C7 is a personal car to me and I love it! But I'm 56 and when I drive the A8, I feel like I do after 2 martinis... I've arrived, superlative.
S8 the big dog!

[Prak98]

S8 plus, best of both worlds. Speed and class.

[A3 Turbo]

My vote is for the A8 4.0T (non-L standard wheelbase). Talk about a sleeper! I've seen some higher mileage ones go for under 20K on Manheim. Plus it has MORE potential than the RS7:

1) Weighs within 100lbs of the RS7
2) Has the same ZF 8-speed trans but has better gearing (shorter FD).
3) Plenty of room under the hood for huge dual inlets and intake pipes. Can't fit any of this on the S6 or RS7.
4) Has a higher compression ratio. When maxing out the turbos on race fuel, it will make more power than if you were running the lower CR of the RS7 and S8.

[p3u]

My vote is for the A8 4.0T (non-L standard wheelbase). Talk about a sleeper! I've seen some higher mileage ones go for under 20K on Manheim. Plus it has MORE potential than the RS7:

1) Weighs within 100lbs of the RS7
2) Has the same ZF 8-speed trans but has better gearing (shorter FD).
3) Plenty of room under the hood for huge dual inlets and intake pipes. Can't fit any of this on the S6 or RS7.
4) Has a higher compression ratio. When maxing out the turbos on race fuel, it will make more power than if you were running the lower CR of the RS7 and S8.

The A8 4.0tt has the same engine as the S6 which has a huge disadvantage over the RS7 or S8.

[Chris Morales]

My vote is for the A8 4.0T (non-L standard wheelbase). Talk about a sleeper! I've seen some higher mileage ones go for under 20K on Manheim. Plus it has MORE potential than the RS7:

1) Weighs within 100lbs of the RS7
2) Has the same ZF 8-speed trans but has better gearing (shorter FD).
3) Plenty of room under the hood for huge dual inlets and intake pipes. Can't fit any of this on the S6 or RS7.
4) Has a higher compression ratio. When maxing out the turbos on race fuel, it will make more power than if you were running the lower CR of the RS7 and S8.

Long term there is a lot of potential. But for now it does have the smaller turbos, lower redline, and no tuning support for anything beyond stage 1 (with only APR doing that, as far as I know).



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[wwhan]

The S8 is a great choice, if the size is not an issue. I saw one the other day from two parking lot two spaces over, it looks a lot like the S6, but it is longer and heavier. The engine and transmission are nearly identical to the low static compression V8 RS7. Minor tuning should make the S8 into a beast. After seeing that S8 I started thinking about getting a S8. The S8 has twin inlet filters "(Air induction for both cylinder banks, only in the Audi S8). An additional oil cooler is installed on the S8 version of the engine. It is an air-to-oil cooler mounted at the front of the vehicle. Oil does not flow through this cooler continuously. Flow through the additional oil cooler is regulated by a thermostat."

[Ze_Nardo6]

There's no debate, S8 > S7

If you're considering S8 or RS7, that's personal preference. I would still choose S8...but S8 Plus is the no-brainer

[SkyDude]

S8.

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[A3 Turbo]

Differences such as the turbos, airbox and cooling can be sourced from Europe on the cheap and swapped over to the A8 in a few hours.

The higher compression ratio in the A8 is an advantage, not a disadvantage. Higher compression ratio with the same boost should make more power, provided you have enough octane.

What's left that's different which could affect power? The cams? Only the duration is different and it's such a slight difference that I really doubt it accounts for much. It's typical of Quattro GmbH (now Sport GmBh) to make small, trivial changes and charge an arm and a leg for them. Another example of this would be the B5 S4 vs B5 RS4. 95% of the power difference is in the turbos. The other 5% comes from parts they changed which accounts for a very small difference in power, such as the cams, intake manifold and throttle body.

We're talking about ~$20K for a used A8 4.0T vs ~$60K for a used RS7. Huge difference.

The A8 4.0tt has the same engine as the S6 which has a huge disadvantage over the RS7 or S8.

[A3 Turbo]

The smaller turbos is an easy fix. Used RS turbos and inlets are plentiful in Europe right now. If you've done them before, you can install them in 4-5 hours.

APR has already figured out how to raise the shift points of the ZF to 7200 RPMs. They posted a video of it on this forum.

As for engine tuning, I'm sure APR could do it easily if you brought them the car. There are also other less known tuners out there, some of which are across the pond.

Long term there is a lot of potential. But for now it does have the smaller turbos, lower redline, and no tuning support for anything beyond stage 1 (with only APR doing that, as far as I know).



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[VVG]

Been behind the wheel of my '17 S7 for just over a month now. Love it. I came from a 16' A7. Everyone has their own cup of tea when it comes to these cars. The question for you would be whether you are attracted to the hatchback design or not. I personally admire it and think its one of the most unique designs on the road. I haven't driven or been in an S8 but I've been in and driven an A8L. The platform is great, comfortable, and spacious. Can't really go wrong either way but its a question of traditional styling vs non-traditional. The S7 will definetly draw more eyes. If you're interested in a bit more flash, S7 is the way to go. If you want to stay under the radar, S8 is the way to go....until you hit the gas that is.

I agree with this line of thinking. Decide on whether you like and/or need the hatchback design. The S7 can almost have the utility of a small SUV, the S8 can not. That said, if you are looking at an S8, then for the same price and performance, look at the RS7, not the S7.

[Brooklyn]

Unless you need the convenience of the S7's hatchback, particularly with the rear seats folded down (which you can't do in the S8), then the S8 is the clear choice to me. If I were shopping an Audi right now and didn't need that capability, it would be a CPO S8 all the way. I'm seeing much better prices for CPO S8's than I am for RS7s, not to mention the brake jobs appear to be much cheaper on the S8, at least where parts/labor are concerned.

[sciblades]

Easy choice, S8.

This is an easy choice s8 all day has a larger turbo and is faster not to mention if you get bored with the power is the same engine as the rs7 just different turbo s and cooling.

S8 all day

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[Chris Morales]

The smaller turbos is an easy fix. Used RS turbos and inlets are plentiful in Europe right now. If you've done them before, you can install them in 4-5 hours.

APR has already figured out how to raise the shift points of the ZF to 7200 RPMs. They posted a video of it on this forum.

As for engine tuning, I'm sure APR could do it easily if you brought them the car. There are also other less known tuners out there, some of which are across the pond.

I know about the APR TCU work, but they say they're no where near releasing the upgrade. And the TCU upgrade will require an increased ECU rev limit. An A8 will probably be one of the last cars APR provides this for.

As for custom tuning from APR, I've inquired because I wanted to get some TTE 800s or something similar. I was rebuffed. Flat out told they would not do custom tuning, despite what they did for "Dads RS7." The European tuners said they need my car physically there. GIAC is the only US tuner that said it was willing

Hey, MTM is coming to the US. One could drop $50k-100k on their package I suppose.


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[sciblades]

Raising the ecu rev limit is very easy everyone can do it, the tcu is a different story

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[dab]

you can tell which one I would choose after being in the rs6 for 9 years, I was all over the 7 body style. The 8 body style is dated and if you have had a 3,4,6 audi in the past....

[Chris Morales]

Raising the ecu rev limit is very easy everyone can do it, the tcu is a different story

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By everyone do you mean me? Or do you mean every tuner ('cause only one tuner is F'ing with an A8, and they pay attention to it last)? Please tell me what I am missing.

[sciblades]

By everyone do you mean me? Or do you mean every tuner ('cause only one tuner is F'ing with an A8, and they pay attention to it last)? Please tell me what I am missing.

Every tuner that does the 4.0tt can raise the ecu rev limit. That is not the issue

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[Chris Morales]

Yeah. And of course the only point I was making is that APR (since it's the only tuner for an A8) will get around to messing with the tune again on that car after they pay attention to everything else. It took them a year to give me a 104 tune for my S8, and all they needed to do was calibrate the existing tune for my box code. Good luck getting any new tuning for an A8.

[emceus]

True

[sciblades]

Yeah. And of course the only point I was making is that APR (since it's the only tuner for an A8) will get around to messing with the tune again on that car after they pay attention to everything else. It took them a year to give me a 104 tune for my S8, and all they needed to do was calibrate the existing tune for my box code. Good luck getting any new tuning for an A8.

Uni has tuned a ton of a8s I know of 4 they have done, my step father has s stg2 a8l

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[wwhan]

The reason the S8 & RS7 static compression is low, is to allow much higher boost levels on normal pump fuel. The higher static compression on the A8/S6/S7 limits the amount of boost one can run safely on normal 91-93 octane pump fuel.

As for the the 7 body style, I guess some people prefer it, but it is not everyone's cup of tea & the top view camera is not available.

[A3 Turbo]

There's more different than the turbos and cooling. The S8 has dual intakes, different exhaust valves, different final drive ratio, among other things.

This is an easy choice s8 all day has a larger turbo and is faster not to mention if you get bored with the power is the same engine as the rs7 just different turbo s and cooling.

S8 all day

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[A3 Turbo]

I could be wrong, but I believe when they said they were nowhere near releasing the TCU for the RS7 it was because they haven't been able to fully delve into all the relevant code and maps yet (such as for AMAX). So it'll take some time for them to go through everything, build a TCU tune for the RS7, test it, etc. If you just want to change the shift points on the ZF like they did on the C7 A6 already, I believe they have the ability to do that now.

Did you go through customer service at APR or someone else when you inquired about custom tuning? You need to go through the right people there otherwise you can get conflicting information.

There are plenty of tuners across the pond that can remotely tune your car. You may want to hit up MRC Tuning. They're pretty good and have tuned Audis all over the globe.

I know about the APR TCU work, but they say they're no where near releasing the upgrade. And the TCU upgrade will require an increased ECU rev limit. An A8 will probably be one of the last cars APR provides this for.

As for custom tuning from APR, I've inquired because I wanted to get some TTE 800s or something similar. I was rebuffed. Flat out told they would not do custom tuning, despite what they did for "Dads RS7." The European tuners said they need my car physically there. GIAC is the only US tuner that said it was willing

Hey, MTM is coming to the US. One could drop $50k-100k on their package I suppose.


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[A3 Turbo]

Yep but when you're talking about modifying each and tuning for high octane race fuel or ethanol, the higher compression A8/S6/S7 should make more power than the lower compression S8 and RS7, with all else being equal of course.

The reason the S8 & RS7 static compression is low, is to allow much higher boost levels on normal pump fuel. The higher static compression on the A8/S6/S7 limits the amount of boost one can run safely on normal 91-93 octane pump fuel.

As for the the 7 body style, I guess some people prefer it, but it is not everyone's cup of tea & the top view camera is not available.

[wwhan]

Yep but when you're talking about modifying each and tuning for high octane race fuel or ethanol, the higher compression A8/S6/S7 should make more power than the lower compression S8 and RS7, with all else being equal of course.

But then one is limited to high octane race fuel or ethanol, which is a limitation many people do not want to deal with on a daily driven street vehicle.

[CanuckRS]

Hey guys I need your help with what would you chose between S7 or s8 used or (cpo)

They have similar options of your liking and color
What car would you spend the next 50,000 miles in for the next 14months

Explain why? In

1.performance
2.style
3.comfort

for that much driving, pick the S8 hands down. enjoy.