The new E63 will have a maximum boost pressure ranging from 13.0 to 14.5 psi. I hate turbo lag, so much that it made me trade in my 997TT. This is why I powerkitted the Panamera to get the Ti-AL turbines that spool up so quickly , the car feels like a N/A engine.

I loved the instancy in my E55 AMG. How is the lag in the current V8TT engines? 14.5 PSI is quite low. WIll it increase with the turbo boost going up?

I have a modded E63 and turbo lag doesnt exsist!

my car is stock never had any lag

I recently sold my 997tt as well and the lag was bad. The 5.5tt does have some lag, but nowhere near as bad. You,ll notice the kickdown delay more.

Thanks for the info, I just hate the moment when you need the power and nothing happens and the overtaking spot is gone. I have really gotten used to my turbos, then again I love the practicality of the shooting brake...damn this might be a problem for me. Surprisingly the f10 M5 I drove had virtually no lag.

If you really really hate lag, look for something supercharged. It's wondrous.

I can overtake most cars without having to go past 3000rpm in the v8 tt. Lag is almost non existent.

Turbo lag is pretty much non-existent as the turbos have a direct shot right from the exhaust manifold right into the intake. Those smaller turbos are also way more efficient and spool so much quicker because of the tight package. Long gone are the big blowers and miles of tubing.

The intercooler is also integrated with the intake and not a stand alone unit that sits under the bumper or away from the intake.

Look below.....

I went from a 2010 E63 to a 2012 E63, so had a chance to directly compare the naturally aspirated motor with the bi-turbo. The cars feel different, there is no denying it. The 2010 had a more instantaneous and linear delivery of power. The 2012 has some minimal lag, that will be noticed if you are coming from a 2010 or 2011 model. However, it is minor indeed, and the power delivery of the 2012 has a satisfying brutality that was not as evident on the 2010 and 2011 models. My 2010 felt like a lumbering unstoppable grizzly bear. The 2012 explodes like a tiger. Both cars are visceral; but the sensations are different.

Which one do I like better? I honestly don't know. They are different but both good.

P.S. The naturally aspirated engine sounds better, overall.

BS BS BS BS BS BS.

I worked for Mercedes this week for the NY Auto Show and got to drive all sort of AMGs I had the CLS63 S-AMG for 48 hours and abused the crap out of it.

Turbo lag IS there and VERY noticeable (for me). Comparing to the C63 or the CL63 I used to have, it's very frustrating. Especially when you kick down.

The car with no doubt is SUPER fast (way faster than my old CL63) and can rape 99% of the cars on the road but the turbo lag kills it for me... that and the electric steering. The car feels numb and doesn't inspire confidence.

I am so disappointed in the new direction all the cars manufacturers are taking. I wish MB went with the SC route instead of TT.

I too feel there is definite lag down low. Coming from several NA cars, the TT lag is noticeable. However, if you quick shift into a gear that puts the power in the sweet spot the lag is gone (duh). However I feel the steering at least in my E63 wagon is very communicative and precise. I just got done doing a drive through some twistys and I never feel left out by the steering or suspension. Maybe its a CLS thing?

Everyone chill it's not lag it's still a huge 5.5 liter v8 w torque down low how is a 5.5 v8 w tiny turbos feel laggy. It's the torque managenent dialed into the drive by wire throttle. Get your cars tuned, problem solved. My m156 amg even had much better off the line response with a tune. MB programs a lot of bull**** into the drive by wire throttle.

if there is any lag its in C mode , beyond that there aint none

Speaking of BS.....

Right.

The 5.5L M273 in my G produces close to 400/400. There is no masking of any engine characteristics in that drivetrain.

Weird.

Quite a few of my recent cars (BMW and MB) have been turbocharged and there was virtually no lag. Even the E550 feels lag-free.

Peak torque for the E63 is available from 1,750 to 5,000 rpm. That's incredible.

Compare that to 5,000 rpm for the 6.2L V8 in the C63.

The massive gobs of torque available down low on the 5.5L biturbo motors make them feel very responsive. They've all felt responsive to me, anyway.

listen to this man.

Put the car in 3rd gear at around 50mph.. step on it.. no lag.

Lag on this car is due to the 7sp auto.. hates to downshift from 7 to 5 or 4th in C mode.

The MCT is a bit better.. but its no M-DCT by any means.

Yes.. on N/A car obviously power deliver is linear and no delay.

With turbo car or even supercharged.. you have to be in the right gear to avoid feeling a slight delay.

I had this delay on my E55 when the compressor clutched engaged. and have the same issue with M278. The fix to be in the correct gear or break torque during stop to engage the torque converter. Also "S" mode helps.. but again ... right gear.. no delay in power.

My 2012 P30 has zero lag.....imperceptible.........

Max torque is available from 1750 rpm and the 'curve' is flat all the way up to 5000... how can a motor be laggy if that's the case?

Also, if you want a more responsive throttle pedal I would suggest the following:

- Drive it in M mode to avoid the transmission always being a gear (or two) higher than the car should be in for a sportive driving style

- Make sure you have engaged sport mode, which (in my opinion anyway) tighten's up the throttle response and gets a lot of the nannies out of the way that can rob power without you knowing it. This is especially evident when the car hasn't warmed up yet.

This car has way more oompf down low than my C63 had. 590 ft/lbs at 1750rpm man... hard to argue with that