328i('07) vs. 325i ('06)

abcommercial · 12-30-2008, 07:35 PM

My '06 325i is getting some service, and my loaner is an '07 328i. Wow -- big difference in acceleration. I didn't expect that much difference. My 325i has good power and acceleration, but the 328 really throws me back against the seat. I didn't think the power and torque difference was very big, but it sure is noticeable.

exo-ak-dk · 12-30-2008, 07:47 PM

hmm if im not wrong the 328i has +15 more than the 325i....?

Doesn't sound like a big difference...... ?

CyberGypsy · 12-30-2008, 07:54 PM

I have a 06 325i and test drove a 328i yesterday, the same, maybe your car needs to be serviced?

EHbavarian · 12-30-2008, 09:33 PM

on my case .. i own a 325i 2006 with 47.000miles manual, i had a 328 automatic as a loaner couple of times and for me the same. ur prob not pushing ur 325i as much i do..

BK · 12-30-2008, 09:37 PM

People beat the hell out of the loaners. As a result, their "learning" steptronic ATs are usually more aggressive than they otherwise might be. Maybe that's what you're feeling? That said, the 328i is indeed more powerful than the 325i.

nicknaz · 12-30-2008, 10:22 PM

Thought I saw a post in the NA subforum a while back where someone dyno'd a 328 manual and it put down like 206whp and on the same dyno same day someone else did a 325 auto and it put down like 186whp. so ~20whp difference? sort of makes sense you feel a bit of a power difference

That said, maybe you are just hammering the crap out of the loaner more than your regular car

Exacc · 12-30-2008, 11:28 PM

Isn' the 328i actually a 3.0L engine, vs the 325i having a 2.5L only? The big displacement difference is probably what most people feel. WHP is not something that is as noticeable since we only really use the WHP advantage a split second when high RPMs are hit...but the torque, you feel all the time in city driving.

BK · 12-30-2008, 11:57 PM

^^ In the US, they are both 3.0L. Elsewhere, the 325i is 2.5L.

TwinTurboXI · 12-31-2008, 12:03 AM

A jb1 is about 20hp increse on the 335 and you can feel difference from stock.

DenverJayhawk · 12-31-2008, 09:43 AM

You should try a 335 loaner. You'll be in for a treat. Ask for a manual tranny if possible.

Sara · 12-31-2008, 10:38 AM

Ive driven both. Both the same to me.

exo-ak-dk · 12-31-2008, 10:42 AM

Quote:

Originally Posted by BK

^^ In the US, they are both 3.0L. Elsewhere, the 325i is 2.5L.

That only counts for the 05 and 06

The new models 07, 08 and 09 all have 3.0L engine

325i 3.0L engine
330i 3.0L engine
335i 3.0L engine w. turbo

And it's the same everywhere.....we also have that in europe

abcommercial · 12-31-2008, 05:27 PM

Quote:

Originally Posted by exo-ak-dk

That only counts for the 05 and 06

The new models 07, 08 and 09 all have 3.0L engine

325i 3.0L engine
330i 3.0L engine
335i 3.0L engine w. turbo

And it's the same everywhere.....we also have that in europe

Really?? I could have sworn I read/heard that 325i was a 2.5L and that 328i was a 3.0L displacement.

Anyway, I think there is something to the theory above that I was probably pounding the loaner harder than I would have my own. I got my car back today, and it is maybe a little less throttle-responsive, but not terribly much.

Also, I wonder if the comprehensive software update the dealer did (posted in my iDrive thread) also updated the ECU software??

nhhiep · 12-31-2008, 05:37 PM

I've a 325i and got the 328i loaner yesterday. it sure has more power and pulls much better than mine(more than 15hp on paper). is it possible that BMW silently rebadged the 330i to be 328i to make 330i customers happy?

chaz58 · 12-31-2008, 05:41 PM

yeah, I have always wondered how accurate the numbers were. I also found a big difference between the 328 and the 325, while the 328 and 330 seemed pretty similar to me.

Another difference is that the 328 and 330 pull longer and harder both making peak power higher in the RPM range than the 325.

Staszek · 12-31-2008, 05:49 PM

Quote:

Originally Posted by nhhiep

I've a 325i and got the 328i loaner yesterday. it sure has more power and pulls much better than mine(more than 15hp on paper). is it possible that BMW silently rebadged the 330i to be 328i to make 330i customers happy?

No lol but I do think the 328 is a little underrated.

Its only .2 difference in the manual between the 330 and 328 (0-60 6.1 vs 6.3 bmw times) but after that the 330 begins to pull nicely (the higher hp shows up nicely as you keep moving.

There is much great difference in the auto versions though.

As for the 325 as someone else stated it has always been a 3.0l just lacked the 3 stage intake of the 330 and some programming.

The 328 is still a 3.0l also doesn't have the 3 stage intake but it was reworked to up the HP.

Staszek · 12-31-2008, 05:58 PM

Quote:

Originally Posted by chaz58

yeah, I have always wondered how accurate the numbers were. I also found a big difference between the 328 and the 325, while the 328 and 330 seemed pretty similar to me.

Another difference is that the 328 and 330 pull longer and harder both making peak power higher in the RPM range than the 325.

Off the line you wont notice much difference between a 330 and 328 their tq numbers are pretty close and the 328 is lighter.

You will notice a much bigger gap past say 70 or if you are on the highway at 60 and open it up.

328i manual
0-100 mph - 16.4 seconds
1/4 Mile - 14.8 @ 95 mph
30-50 mph top gear - 10.5 seconds
50-70 mph top gear - 10.2 seconds

330i manual
0-100 mph - 15.3 seconds
1/4 mile - 14.3 @ 98 mph
50-70 mph top gear - 8.6 seconds

I cant find the 30-50 time but its fairly similar, making the 330 markedly faster on the highway almost a 2 second difference.

BK · 12-31-2008, 07:22 PM

Quote:

Originally Posted by nhhiep

is it possible that BMW silently rebadged the 330i to be 328i to make 330i customers happy?

It's more likely they de-crippled the 325i engine to give it more HP and TQ, but left it just shy of the 330i, then badged it up. Remember, the 330i also had other parts like bigger brakes, stronger tranny, longer standard features list, and so on that didn't make it to the 328i.

Gumulri · 12-31-2008, 07:32 PM

Quote:

Originally Posted by EHbavarian

on my case .. i own a 325i 2006 with 47.000miles manual, i had a 328 automatic as a loaner couple of times and for me the same. ur prob not pushing ur 325i as much i do..

+1

Majikthese42 · 12-31-2008, 07:33 PM

Interesting. I had my car in for service yesterday and was given a 328i sedan loaner -- I was amazed as to how much slower and unresponsive the automatic sedan is vs. my manual transmission wagon.

Or maybe my car was built on a Wednesday and the loaner was built on a Monday during Oktoberfest?

12-30-2008, 07:35 PM	#1
abcommercial Second Lieutenant 27 Rep 237 Posts Drives: TBD Join Date: Nov 2008 Location: Texas iTrader: (0)	328i('07) vs. 325i ('06) My '06 325i is getting some service, and my loaner is an '07 328i. Wow -- big difference in acceleration. I didn't expect that much difference. My 325i has good power and acceleration, but the 328 really throws me back against the seat. I didn't think the power and torque difference was very big, but it sure is noticeable.
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12-30-2008, 07:47 PM	#2
exo-ak-dk Black Magic Wheels - BMW 36 Rep 1,090 Posts Drives: E90 Join Date: Aug 2007 Location: Denmark iTrader: (0)	hmm if im not wrong the 328i has +15 more than the 325i....? Doesn't sound like a big difference...... ?
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12-30-2008, 07:54 PM	#3
CyberGypsy Lieutenant 15 Rep 443 Posts Drives: 2006 325i Join Date: Oct 2008 Location: Key West iTrader: (0)	I have a 06 325i and test drove a 328i yesterday, the same, maybe your car needs to be serviced?
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12-30-2008, 09:33 PM	#4
EHbavarian Captain 45 Rep 960 Posts Drives: e90 Join Date: Aug 2007 Location: HAMPTONS iTrader: (0)	on my case .. i own a 325i 2006 with 47.000miles manual, i had a 328 automatic as a loaner couple of times and for me the same. ur prob not pushing ur 325i as much i do.. __________________ 2006 e90 jet black- SOLD 2004 E46 M3 white-SOLD currently driving a 2004 infiniti g35 coupe 6mt w/ single turbo by turbonetics / d.p, forged pistons, heads, exhaust system, headers, uprev tune etc etc , dynojet 470whp
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12-30-2008, 09:37 PM	#5
BK Smiling politely 165 Rep 7,931 Posts Drives: 330i Join Date: Feb 2006 Location: Washington DC iTrader: (0) Garage List 2006 330i [9.00]	People beat the hell out of the loaners. As a result, their "learning" steptronic ATs are usually more aggressive than they otherwise might be. Maybe that's what you're feeling? That said, the 328i is indeed more powerful than the 325i. __________________ E90 330i Black Sapphire 6MT \| 991.1 C4 Platinum Silver 7MT
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12-30-2008, 10:22 PM	#6
nicknaz Lieutenant General 3188 Rep 10,509 Posts Drives: C6Z Join Date: May 2008 Location: NorCal iTrader: (0)	Thought I saw a post in the NA subforum a while back where someone dyno'd a 328 manual and it put down like 206whp and on the same dyno same day someone else did a 325 auto and it put down like 186whp. so ~20whp difference? sort of makes sense you feel a bit of a power difference That said, maybe you are just hammering the crap out of the loaner more than your regular car
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12-30-2008, 11:28 PM	#7
Exacc First Lieutenant 10 Rep 312 Posts Drives: BMW E46 325i Join Date: May 2008 Location: Asia iTrader: (0) Garage List 2004 E46 325i [0.00]	Isn' the 328i actually a 3.0L engine, vs the 325i having a 2.5L only? The big displacement difference is probably what most people feel. WHP is not something that is as noticeable since we only really use the WHP advantage a split second when high RPMs are hit...but the torque, you feel all the time in city driving. __________________ 2008 E92 335i Sapphire Black 2005 E46 M3 ZCP Silver Grey
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12-30-2008, 11:57 PM	#8
BK Smiling politely 165 Rep 7,931 Posts Drives: 330i Join Date: Feb 2006 Location: Washington DC iTrader: (0) Garage List 2006 330i [9.00]	^^ In the US, they are both 3.0L. Elsewhere, the 325i is 2.5L. __________________ E90 330i Black Sapphire 6MT \| 991.1 C4 Platinum Silver 7MT
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12-31-2008, 12:03 AM	#9
TwinTurboXI Lieutenant Colonel 160 Rep 1,523 Posts Drives: 2011 135i Join Date: Mar 2008 Location: . iTrader: (12)	A jb1 is about 20hp increse on the 335 and you can feel difference from stock.
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12-31-2008, 09:43 AM	#10
DenverJayhawk Major 72 Rep 1,217 Posts Drives: 2006 E90 330i Join Date: Jul 2008 Location: Denver iTrader: (0)	You should try a 335 loaner. You'll be in for a treat. Ask for a manual tranny if possible. __________________ 330i, Black Sapphire, 6MT, Sport, Active Steering, Flux Capacitor
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12-31-2008, 10:38 AM	#11
Sara Lieutenant General 5791 Rep 17,879 Posts Drives: A car Join Date: Aug 2007 Location: Nola iTrader: (6)	Ive driven both. Both the same to me.
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12-31-2008, 05:37 PM	#14
nhhiep Captain 88 Rep 863 Posts Drives: bmw Join Date: Jan 2006 Location: Denver, CO iTrader: (0)	I've a 325i and got the 328i loaner yesterday. it sure has more power and pulls much better than mine(more than 15hp on paper). is it possible that BMW silently rebadged the 330i to be 328i to make 330i customers happy?
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12-31-2008, 05:41 PM	#15
chaz58 Captain 15 Rep 701 Posts Drives: 328iT Join Date: Oct 2007 Location: Detroit Burbs iTrader: (0)	yeah, I have always wondered how accurate the numbers were. I also found a big difference between the 328 and the 325, while the 328 and 330 seemed pretty similar to me. Another difference is that the 328 and 330 pull longer and harder both making peak power higher in the RPM range than the 325. __________________ _________________________________________________
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12-31-2008, 07:33 PM	#20
Majikthese42 Philosopher-king 20 Rep 1,113 Posts Drives: 2008 E91 Join Date: Apr 2005 Location: People's Republic of New Jersey iTrader: (0)	Interesting. I had my car in for service yesterday and was given a 328i sedan loaner -- I was amazed as to how much slower and unresponsive the automatic sedan is vs. my manual transmission wagon. Or maybe my car was built on a Wednesday and the loaner was built on a Monday during Oktoberfest? __________________ E91 6MT Alpine, Terra, Xenons, ZSP, ZCW, ZPP, PDC, CA, alarm, M shifter and M brake handle, Euro rear fog light switch, Euro aspheric mirrors, rear power outlets, Garmin nüvi custom cupholder mount, Lidatek, V-1 built-in remote display, tire pump, jack, floor mats.
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