Test Results - S63 5.5 V8 Biturbo
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'14 E63S & '14 Audi SQ5
Thanks for all the answers, I still am going to rent one and run one of my buddies in the new TT version. I disagree with many here in believing the new S63 will trounce the numbers of the old car. I believe the margin to be under .7 second in the 1/4 mile and .2 0-60. The 50 extra hp will not be enough to achieve the exaggerated gap presented in the thread.
Are we getting a 530 hp version and a 570 hp version? will the 530 variant destroy the M156???
Are we getting a 530 hp version and a 570 hp version? will the 530 variant destroy the M156???
The N/A 6.2L engine is making its peak torque at 5,200 RPM which translates to 460hp. The 6.2L engine makes its peak 525hp (PS) at 6,800 RPM.
What this means is that for a large portion of the power band, the Biturbo V8 is actually putting out closer to 100hp over the N/A V8. I think that can explain the disparity in performance.
The N/A V8 is a great engine. However, the S-Class is probably not the best chassis to display its prowess. It is like stuffing the BMW M5's V10 in a 7-Series.
Tom
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From: CA, NV, CO
Great engine wrong platform...
This is one of those times where someone needs to transplant this Bi-Turbo engine and stuff it into either current C-class chassis or a CLK chassis. Will probably make more sense since those a lighter than the S-class.
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From: Maryland
SL55 AMG
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From: Hollywood CA
2011 twin turboed prius
You are right, it isn't the 50hp difference that is causing the disparity, it is the 199lbs-ft of torque differential. I believe both new and old S63's are running essentially the same gear ratios so that puts them on equal footing as far as torque multiplication. The 5.5L V8 Biturbo's makes peak hp (571hp PS or 563 hp SAE) at 5,500 RPM and makes its peak torque (664lbs-ft) between 2,000 and 4,500 RPM. By doing the math (hp = (Torque X RPM)/5,252), that means that at 2,000 RPM it is making 253hp...and by 4,500 RPM it is making 569hp PS (obviously these are flywheel #'s). With the hp peak at 5,500 RPM, that means it is maintaining 569-570hp from 4,500 to 5,500 RPM.
The N/A 6.2L engine is making its peak torque at 5,200 RPM which translates to 460hp. The 6.2L engine makes its peak 525hp (PS) at 6,800 RPM.
What this means is that for a large portion of the power band, the Biturbo V8 is actually putting out closer to 100hp over the N/A V8. I think that can explain the disparity in performance.
The N/A V8 is a great engine. However, the S-Class is probably not the best chassis to display its prowess. It is like stuffing the BMW M5's V10 in a 7-Series.
Tom
The N/A 6.2L engine is making its peak torque at 5,200 RPM which translates to 460hp. The 6.2L engine makes its peak 525hp (PS) at 6,800 RPM.
What this means is that for a large portion of the power band, the Biturbo V8 is actually putting out closer to 100hp over the N/A V8. I think that can explain the disparity in performance.
The N/A V8 is a great engine. However, the S-Class is probably not the best chassis to display its prowess. It is like stuffing the BMW M5's V10 in a 7-Series.
Tom
Thank you for that answer.
That helps me cope better, amazing tq numbers , jeez. However wouldnt the car's acceleration slow after peak is achieved. Do we have a comparison say 0-150 mph?? I just cannot wrap my head around the time gap continyou um.
Will the new S63 (571) hp car be faster than an S65?
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From: Southern, CA.
V12-Biturbo
Wow ,
Thank you for that answer.
That helps me cope better, amazing tq numbers , jeez. However wouldnt the car's acceleration slow after peak is achieved. Do we have a comparison say 0-150 mph?? I just cannot wrap my head around the time gap continyou um.
Will the new S63 (571) hp car be faster than an S65?
Thank you for that answer.
That helps me cope better, amazing tq numbers , jeez. However wouldnt the car's acceleration slow after peak is achieved. Do we have a comparison say 0-150 mph?? I just cannot wrap my head around the time gap continyou um.
Will the new S63 (571) hp car be faster than an S65?
MBWorld Fanatic!
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From: Kenilworth, il usa
GT63S ePerformance 4dr, '25 Bentayga Black Ed.(wife), Wrangler and 250 MLB(kids)
For all practical reasons ,equal performance for new car vs current S65 (0.1 of sec better time in 0-200km/h).
2011 S65 has a 20hp bump however and I suspect is more tunable then the new tech 5.5 TT.
I'm still struggling with what to get ,even though my ordered S63 is scheduled for October production.
Thread Starter
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From: Maryland
'14 E63S & '14 Audi SQ5
The S63 is running I believe a 3.08 rear gear vs the 2.65. With evenly spaced 7 gears to provide torque multiplication and a slightly lighter weight, the S63 PP may provide a serious challenge to the S65. Hopefully, an enthusiast will get their hands on one and actually take it to the track to see what it can really do.
Tom
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haters crazy
Why do people still care so much about peak hp/tq numbers??? Haven't we learned that peak numbers don't mean jack? All this speculation doesn't matter til someone either tracks it or lines em up in a controlled environment. Street racing never gives an even start.
I can only imagine the absurd amount MB wants for a new longblock. Might as well just buy the damn car. But if you buy it for me I will put it in 
