01-01-2016, 08:39 PM | #1 |
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X3 x28i vs x35i
Thinking of getting an X3. I'm a little concerned the 4 cyl might be bogged down too much on the occasional camping trip - 4 people, gear, mountains, maybe towing a dinghy. This would only be a couple of times a year if that. A little slower I can live with but maybe not a lot (re: line of cars behind me).
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01-01-2016, 09:40 PM | #2 |
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Max Well has compiled some interesting acceleration simulation data comparing the X3 equipped with different engines under different loads and conditions. This may be a good starting point to evaluate the performance differences you may encounter with the 28i vs 35i under various conditions.
http://x3.xbimmers.com/forums/showthread.php?t=1149189 My expectation is that under most conditions the X3 28i will be quicker to accelerate and handle better than most vehicles you may encounter on a camping trip. If you need quicker performance the sport setting will help. In general, the X3 28i may with a full load from a stop be a second or so slower to accelerate to 60 mph than the X3 35i. Last edited by MichiganMike; 01-01-2016 at 09:47 PM.. |
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01-02-2016, 01:26 AM | #3 |
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I was afraid that my 35i with 1900kg and AWD would not be as fun as I wanted. I was wrong! The 8-speed does wonders for joy of driving/performance. I am sure you will not be disappointed with a 28i - although the 35i is "best choice"
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01-02-2016, 09:06 AM | #4 | |
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01-02-2016, 01:55 PM | #5 | |
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01-04-2016, 07:57 AM | #6 |
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This is almost the same question I asked when I was deciding between the F30 328i vs. 335i.
After a test drive, there was no question. 3.0L I6 was the way to go. It accelerated way more effortlessly than the 2.0. Fuel savings: 2mpg for 28i. (IMO, not significant as most of my driving is highway and there's only a 1mpg difference on the highway) https://www.fueleconomy.gov/feg/Find...36142&id=36141 Vehicle weights: 335i auto - ~3695lbs X3 28i auto - ~4100lbs X3 35i auto - ~4230lbs I've had a passenger + 500lbs of weights (used for alignment) in my 335i before. It was substantially slower carrying that load. An X3 basically starts at that weight. I would definitely want an 3.0 I6. |
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01-04-2016, 09:56 AM | #7 |
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" A little slower I can live with but maybe not a lot (re: line of cars behind me)."
The 4 pot has 260 torque while the 3.0 has 300, honestly i don't think 10% is a big difference as long as the rpm is in the low to mid range. What the 2.0 lacks (relative to the 3.0) is the top end (4500 rpm+) and smoothness, but I think you will be much faster than the rest of the traffic if you are pressing this hard, in either engine... |
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01-04-2016, 11:02 AM | #8 | |
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01-04-2016, 11:11 AM | #9 | |
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Quote:
http://f30.bimmerpost.com/forums/sho...d.php?t=593583 http://www.automobilemag.com/reviews...5is_dyno_test/ |
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01-04-2016, 12:23 PM | #11 |
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I found myself pleasantly surprised with the 2.8. It is relatively quick, and I get over 27 mpg on the highway. More like 22 is mixed driving.
Sure the I6 would be more fun, but I am satisfied with the 4 cylinder. Nitpicking, it appears the 4 has a better weight distribution than the 6! Yeah, it's minimal, but helps the cause. |
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01-04-2016, 01:22 PM | #12 |
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28i is fine, 35i is better. It probably depends more on what you are used to. The last 3 cars I have had all had 0 to 60s around 5.5 seconds. So, getting something in the high 6s feels a little slow comparatively. Given those were Fords and Subarus, I didn't want my first BMW feeling slower than those brands. However, if you are used to that acceleration and haven't been spoiled you'll be perfectly happy.
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01-04-2016, 02:27 PM | #13 |
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I am coming off of a f10 535i into the x3 28i, I do feel a difference but after debating a little bit and weighing the pros and cons I ultimately went with 28i. I also am driving around a 6 month old baby girl around a lot more now so don't "zoom" around as much lol
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01-04-2016, 05:20 PM | #15 | |
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http://www.automobilemag.com/feature..._dyno_results/ http://www.automobilemag.com/reviews...5is_dyno_test/ Approximate Torque for N20 and N55 engines at various RPMs from Automobile Mag dyno tests of 3 series RPM N20 N55 1500 165 210 2000 220 275 2500 225 300 3000 240 280 3500 240 285 4000 240 280 4500 245 280 5000 230 270 5500 210 250 6000 185 225 Last edited by MichiganMike; 01-04-2016 at 05:26 PM.. |
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01-05-2016, 07:31 AM | #16 | |
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01-05-2016, 09:14 AM | #17 | |
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Otherwise engine speed just shoot through the low RPM range even before achieving full torque. You can see that from the fact that N20, N54 and N55 should all have flat torque from very low RPM (~1200rpm for N55 & N20, slightly higher for N54), but the charts have a very steep slope below 2000 RPM. |
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01-05-2016, 10:06 AM | #18 | |
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Wrangler is great but I need something that's more professional for clients. It had been a blast and is a great car! |
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01-05-2016, 10:13 AM | #19 |
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01-05-2016, 11:44 AM | #20 |
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01-08-2016, 09:30 PM | #21 | |
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We're also not hauling much other than a couple big Labradors. For me (under the situations you are describing) I'd have been happier with the 35i. Strongly suggest you test drive them both. Shouldn't be hard to do.
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01-09-2016, 01:34 PM | #22 |
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I'm trying this again - this is the first I've been able to log in - computer issues - mainly operator error (I'm seriously BC)
Thanks for the input & support; I'm impressed. We decided on the x28i - ordered it last week - M Sport, Dynamic Handling, too much stuff to list. The 4cyl will be fine; the 8 speed should take care of the occasional load. Drove the 4 & 6 back to back - the 4 steps off nicely; the 6 is definitely faster but not necessary (for us). This will be a utility vehicle - no need for zooming. For that we've got an M Sport s28i X1 & an S2000. The X1 is impressive - same size as a Civic but w/240HP & rear drive - plus it's nice & crisp & gives better than 30MPG on trips. (The S2000 needs no explanation) |
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