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-   -   2012 Z4 sDrive28i - And The Verdict Is? (http://www.bimmerfest.com/forums/showthread.php?t=581504)

iwanna330cic 11-14-2011 07:45 PM

2012 Z4 sDrive28i - And The Verdict Is?
 
Just wondering who has driven (bought/leased) one of the new I-4 turbo models? How do you like it? Engine sound & response? Turbo lag? Acceleration? 0-6 is only about 1/2 second "slower" than the 35i... but thousands less to acquire. Is the I-4 as smooth and quick (or close to it) as the I-6? And does it "feel" like a 4 cylinder up front? Feel free to add any other reactions or thoughts. Thanks.

Doug

BlueZ4AZ 11-15-2011 07:38 AM

We will see if the 4 cylinder is really a 1/2 second slower than the 35i after someone does a true road test with the car and publishes it, such as Road & Track or Motor Trend.

BMW has already overestimated the 0-60 time for the 35i. The 35i does 0-60 in 4.7 based on tests. It is faster than the 5.0 BMW claims. Meaning the 4 cylinder will have to do a 5.2 to truly be a 1/2 second behind the 35i.

A 1/2 second is still signifigant in the 4-5 second range. The faster car would be noticeably faster if watching such a race.

iwanna330cic 11-15-2011 03:49 PM

OK - fair enough.

Anyone else have any experience with this model as per my points above? :dunno:

Doug

xtremekill 02-08-2012 09:43 AM

I just got one recently and right off the bat, it did not feel like a 4 cylinder engine car. It kicks and is extremely fun to drive.

Andrew*Debbie 02-09-2012 12:07 AM

Quote:

Originally Posted by iwanna330cic (Post 6441409)
Just wondering who has driven (bought/leased) one of the new I-4 turbo models?

We took an sDrive20i out on a 2 1/ 2 hour test drive. The 20i is the same N20 engine as the 28i de-tuned to 184HP.

We liked it well enough to place an order. I strongly recommend a test drive. If possible, get the car for an entire day. My first impression was not positive but it grew on me.

It sounds like a four cylinder.

There is no turbo lag. Both engines are flat rated. They hit full power and torque early in the power curve and stick there. The de-tuned 20i is "flatter".

Flat rating makes the engine feel more powerful than the HP and Torque numbers. It also makes the car stupid easy to drive.

Smooth as the I-6? No. The N20 is smoother than most inline-4 engines. BMW must have done a lot of work with balance.

Does it feel like a 4 up front? Not so much. I felt isolated from the 'grunt' part of the motor. The difference is more in sound than feel.

On the plus side, the N20 takes about 40lbs of weight off the front of the car and uses less fuel.



EDIT: Just noticed this is a 3 month old thread.... Might as well leave my reply up.

tbod 02-09-2012 12:49 PM

It still has that 4cyl noisy sewing machine sound and a little vibration. That's my only gripe with it.

traza71 02-12-2012 06:23 AM

I just bought a Z4 2.0si - 2012 model... The engines performance so far has been beyond my expectation... The acceleration is good enough for a smaller engine and the sound of the twin turbos is music to the ears... Haven't really tested its full potential so far. Will post the results when I get a chance to take it to its limits. Just a personal comparison between my old 530i (2007) and the Z4: Z4 reaches above 140 km/h in a flash as compared to the 530i... My analogy is based upon the fact that here we have speed cameras installed on certain portions of the highway after every 1 km and these cameras flash you when above 140... Since I got my Z4 (which was about 3 days ago), I have already gotten 2 speeding tickets :(... Where as I have never gotten a speeding ticket in my 530i...

Glen E 02-28-2012 09:45 PM

picked up a melbourne red z4 2.8 this past weekend. Very impressed with the turbo 4. Comfort setting for a lot of interstate driving is really nice. Very happy so far.

jparnes1 02-29-2012 09:06 AM

Quote:

Originally Posted by Glen E (Post 6666200)
picked up a melbourne red z4 2.8 this past weekend. Very impressed with the turbo 4. Comfort setting for a lot of interstate driving is really nice. Very happy so far.

Looks like we have very similar cars, although mine is a 35i. Melbourne, black and M Sport, 18" wheels. Very nice. What else do you have in it? I've got nav, premium package, premium sound, cold weather (I know you don't have that!), and CA.

Glen E 02-29-2012 09:34 AM

Quote:

Originally Posted by jparnes1 (Post 6667048)
Looks like we have very similar cars, although mine is a 35i. Melbourne, black and M Sport, 18" wheels. Very nice. What else do you have in it? I've got nav, premium package, premium sound, cold weather (I know you don't have that!), and CA.

actually that's a stereotype - many of us down here have at least seat warmers - great for your back on a long trip and it gets 50 degrees here in winter and my wife is a reptile when it comes to cold.

I have seats, premium, m package, apps, nav, blk leather. my car is part of my retirement package from BMW of North America, was with them 22 years. Got out of an X3.....great car too.

Andrew*Debbie 02-29-2012 10:54 PM

Glen,

Does your Z4 have a Manual Transmission?


Our high temp today will be near 50F . . . We've ordered our Z with heated seats and heated steering wheel.

Glen E 03-01-2012 12:00 AM

Quote:

Originally Posted by Andrew*Debbie (Post 6669250)
Glen,

Does your Z4 have a Manual Transmission?


Our high temp today will be near 50F . . . We've ordered our Z with heated seats and heated steering wheel.


no..8 spd auto trans...too many in town miles for manual trans

iwanna330cic 03-08-2012 06:27 PM

I finally got a chance to drive the 28i and 35i back to back. I am very impressed with the 28i, but I'm not sure I personally could warm up to the dual set of sounds coming from the engine: A really nice and satisfying growl - almost more than what I would really want - but the simultaneous polar opposite whining sound of the turbo spooling up along with the 4-banger buzzing. Not horribly objectionable - just different.

The 35i, though, has a very natural and highly satisfying feel, sense of acceleration, and that wonderful engine singing/exhaust note duet. This version just give me more of what I really want in a sportscar. I thoroughly understand how some really appreciate and prefer the 28i, but if I go ahead with getting a new Z4, mine will definitely be that I-6 that we all know and love.

Thank you all for responding to my original post. :D

Doug


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