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BMW Diesel Owners / Enthusiasts
Do you own a diesel powered BMW? Maybe a 335d or a BMW x35d? Come and talk about what makes your car great!

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  #1  
Old 11-21-2012, 07:55 AM
Vestigator Vestigator is offline
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Location: Charlotte, NC
 
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Mein Auto: 2003 X5
BMW Deisel

Does the deisel get any better mileage than the gas version? Considering a diesel.
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  #2  
Old 11-21-2012, 08:01 AM
d geek d geek is offline
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Location: San Antonio, TX, USA
 
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Mein Auto: Volvo V70 + Volvo S80
There's a big diesel subforum here on bimmerfest.

Quick answer is yes. Check fueleconomy.gov and fuelly.com for fuel economy estimates & reported FE.

Last edited by d geek; 11-22-2012 at 09:07 AM.
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  #3  
Old 11-21-2012, 09:17 AM
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floydarogers floydarogers is offline
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Location: Renton, WA
 
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Mein Auto: 335d, 328d, Toyota T100
+ as Geek says. I get 5-8 mpg better than my son's 335i. Sometimes even a bit more. Unfortunately, diesel is a fair bit more than gasoline right now but in the past it was less than premium.
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  #4  
Old 11-22-2012, 08:56 AM
badgerbob badgerbob is offline
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Location: Alpharetta, GA
 
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Mein Auto: 2011 335d
If you drive one you will love it, and likely buy one. Be careful, it is a great car.
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  #5  
Old 11-22-2012, 09:03 AM
DZLMAN DZLMAN is offline
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Mein Auto: 335d M Sport/Premium Pkg
Gas mileage diesel is approx 30% better, but as badgerbob mentioned, its a lot of power for its size, in my world power is torque [low revving engine extremely strong pull from dead stop] but if you're more into high revving, horse power, likes down shifting kinda person than you may not like it. Fuel consumption wise diesel is better. Hope this helps. Good luck!
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  #6  
Old 11-22-2012, 09:49 AM
UncleJ UncleJ is offline
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I think that 30% is on the high end, but it is possible. It is also possible to not see much if any improvement over gas if you flog the car heavily. Driving style accounts for a lot but overall diesel will give you at least 10-15% better mileage. There are trade-offs however. The smell of diesel is off putting to some (it is more aromatic than gas and the smell lasts longer), especially if it gets into the interior of the car through spillage on your hands or shoes. It can be hard to find -- although this is not really that much of a problem -- and it can cost more than premium -- again, not always, but sometimes. Over all it is a great fuel and the engines are built to last because of the very high compression required for ignition (no spark, just compression heat). The new high speed light weight turbo diesel engines are truly marvels (all makes, not just BMW) and they are worth your consideration. Just take your wife on the test drive and at least one fuel stop to see if she will buy off on the car!
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  #7  
Old 11-22-2012, 10:05 AM
henrycyao henrycyao is offline
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Diesel fuel has about 15% higher energy content per gallon than gasoline. So it gets 15% MPG better given the same level of technology. To get above 15% MPG improvement has more to do with the tuning characteristics of the engine and how you operate. The BMW rates X5 35i as 16 in the city and X5 35d as 19 in city. That is pretty close to the expected efficiency from the fuel itself.

In Silicon Valley, diesel costs more than the premium fuel. The price tends to stay flat and constant due to lack of demand. So, your cost of operation may be slightly ahead to flat. I was ahead when the gasoline shot up due to southern California's refinery fires. I am now on par in cost because diesel moves slower.

I got diesel engine because I like low end torque. Diesel does not rev as high as gasoline engine and requires more shifts. As the result, its 0-60 time is slower than gasoline engine.
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  #8  
Old 11-22-2012, 10:38 AM
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dunderhi dunderhi is offline
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I guess I'm lucky to live in a area where diesel pumps are as clean as the gas pumps (no gloves needed) and where the price averages out over the course of a year to be roughly equal to premium gas. In the Summer diesel is cheaper and in the Winter gas is cheaper.

The 335d is the first car that I have owned that has averaged equal or better than the EPA highway rating in my everyday driving.
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  #9  
Old 11-22-2012, 10:50 AM
DZLMAN DZLMAN is offline
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Quote:
Originally Posted by dunderhi View Post
I guess I'm lucky to live in a area where diesel pumps are as clean as the gas pumps (no gloves needed) and where the price averages out over the course of a year to be roughly equal to premium gas. In the Summer diesel is cheaper and in the Winter gas is cheaper.

The 335d is the first car that I have owned that has averaged equal or better than the EPA highway rating in my everyday driving.
x2 ditto/same applies to me. Doing 130 km/h, approx 70 mph I get 850 to 900 kms per tank, approx 550 miles. My friend has a 335i driving the same way he gets 450 to 500 kms per tank, approx 310 miles, this is all highway driving. Again the difference between X5 gas and diesel is not much, put the same engine in a smaller/lighter 3 series body with RWD instead of AWD drive train and u see significant difference.
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  #10  
Old 11-22-2012, 04:18 PM
Snipe656 Snipe656 is offline
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Quote:
Originally Posted by floydarogers View Post
+ as Geek says. I get 5-8 mpg better than my son's 335i. Sometimes even a bit more. Unfortunately, diesel is a fair bit more than gasoline right now but in the past it was less than premium.
How far in the past? Down here diesel has been priced at and usually more than 93 octane since mid to late 2004. There have been a few exceptions to that but nothing that stuck. Prior to the change in 2004 it has been around the cost of 87 octane for a number of years.

I have yet to have a diesel car or truck where maintenance and repairs were cheaper than their gas sisters when looking at overall costs for 225-300k miles of use.
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  #11  
Old 11-22-2012, 06:41 PM
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floydarogers floydarogers is offline
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Quote:
Originally Posted by Snipe656 View Post
How far in the past? Down here diesel has been priced at and usually more than 93 octane since mid to late 2004. There have been a few exceptions to that but nothing that stuck. Prior to the change in 2004 it has been around the cost of 87 octane for a number of years.
4-6 months ago, it was the same price as mid-grade. It's now about $0.15-0.20 over premium, in the $4.10-$4.30 range. Regular unleaded is just above $3.50 at the discounters (Costco, Safeway, Arco.) This is a typical season price change that you see in the northern tier where demand for heating oil increases fuel#2 prices.
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  #12  
Old 11-22-2012, 08:10 PM
Snipe656 Snipe656 is offline
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Down here 4-5 months ago diesel was abnormally low and below 93. That however has not been the case in past years. Like I said I have seen abnormal low spikes but for the most part for the past 8ish years down here diesel has been at or above the cost of 93 octane.
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  #13  
Old 11-23-2012, 05:44 AM
KarlB KarlB is offline
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Mein Auto: 11 335d,08 K12GT,10 S1000
just up the road in our area diesel fluctuates from a few pennies less than premium to a few pennies more than premuim has for years and still does. maybe its because we are more ag here than humble is??
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  #14  
Old 11-23-2012, 06:30 AM
Snipe656 Snipe656 is offline
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Or maybe it is the costs of the gasoline that is more different there and bringing the difference down. I am Lubbock right now and diesel is about the same as Houston but gasoline is not. Also gas is slightly lower octane levels here for whatever reasons.
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Last edited by Snipe656; 11-23-2012 at 09:26 AM. Reason: spelling
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  #15  
Old 11-23-2012, 06:56 AM
DC-IT DC-IT is offline
Love my Diesel Vehicles
Location: Toronto, Canada
 
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Mein Auto: E350BlueTec, Jetta TDI
If you do a lot of highway cruising then the D is an excellent choice as it gives you great driving range and effortless performance.

If you do a lot of city (stop+go) driving then the FE is not good but still better than the gasser.

If you are not in a hurry you might want to wait for the new 320/330D?
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  #16  
Old 11-23-2012, 09:24 AM
F32Fleet F32Fleet is offline
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Mein Auto: 435i, 335d sold.
IIRC diesel is taxed @ a slightly higher rate as well.

Sent from my MB525 using Bimmer App
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  #17  
Old 11-26-2012, 08:45 PM
Pierre Louis Pierre Louis is offline
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According to the www.fuelly.com data, which may be as good as any since it is reported using fill-ups and odometer readings, a 2011 335i gets on average 21.5 mpg while a 2011 335d gets on average 30.8 mpg. If premium fuel was $3.75 a gallon, then diesel would need to be (30.8/21.5)x($3.75)=$5.37/gallon for us to BREAK EVEN on the price.

By similar calculations, my last diesel car, a 2005 Mercedes E320 CDI saved me around $10,000 in fuel alone over 200,000 miles ownership. That would have paid for a lot of repairs had I had them! I did sell the car for a couple of thousand more than if it had been a gasoline V8, which is what the diesels should be compared to, not the gasoline V6 usually anyway due to their monster torque!

Too many people in the US don't know how to do simple Math!

PL
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  #18  
Old 11-26-2012, 08:53 PM
Snipe656 Snipe656 is offline
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I have spent over $10k in repairs in less than 24 months on my diesel truck, $5.4k or so in just 2-3 weeks time. My brothers gas truck that is the same basic truck as mine has had I think $2k in repairs for same time and miles. I'd have to go digging to compare the 300SD to the late 380SE or 500SEL that all were 1985 models. Would have to go digging to compare the old Chevro let down trucks too. But bottom line, my experience has been that my diesel cars and trucks have cost me a lot more in repairs/maintenance for 200-300k miles than the gas sisters I or my family have had.
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  #19  
Old 11-26-2012, 09:45 PM
Pierre Louis Pierre Louis is offline
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http://blog.iseecars.com/2012/01/27/...d-diesel-cars/
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  #20  
Old 11-26-2012, 10:17 PM
henrycyao henrycyao is offline
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Originally Posted by Pierre Louis View Post
BMW X5 35D is not one of them Thankfully, I did not buy BMW X5 35D for their reliability.

Gasoline engine has gotten really good these days. You can go on for 100k miles without problems. My brother's Honda CRV just turn 100k and still working well. 200k miles is very likely if they decide to keep the car.

Their cost of ownership? Pretty much just your standard maintenance. In effect, the technology and market demand has closed the gap between diesel and gasoline to the point that most users don't see a difference. What is more important as a difference is the cost of fuel.

Even with 30 cents to 40 cents adder, I still beat regular price by a few cents thanks to Diesel's 15% more energy content per gallon. It is a small win but a win nevertheless. X5 35i certainly can't live with regular fuel. That is really its nearest competitor.
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  #21  
Old 11-27-2012, 03:12 AM
Pierre Louis Pierre Louis is offline
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http://www.edmunds.com/autoobserver-...-adopters.html

Gasoline engines are coming around to using high pressure fuel pumps and direct injection - a technology that diesels have had for a long time and that requires problematic fuel pumps as in the recent problems with 335i pumps. There is one difference: diesel fuel is still a lubricant, gasoline is not.

BMW is one of the most respected manufacturers of diesel engines in the world, makes a large number and variety, and should not disappoint with the 335d. Its one thing to have anecdotes, but another to have real data.

PL
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Old 11-27-2012, 04:50 AM
Snipe656 Snipe656 is offline
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Just looking at the year models they listed it makes me question what reliability is based on. Surely they could not find many people with much over 100k miles on their cars. So I stand by my original statement since it is based on my personal experience, diesel cars and trucks have cost me a lot more for maintenance/repairs for the 200-300k miles that I tend to keep them. Could just be bad luck on my part, certainly willing to accept that.
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  #23  
Old 11-27-2012, 08:10 AM
UncleJ UncleJ is offline
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Henry, the X5d does have some "near competitors". The new Cayenne diesel, the T-egg and Audi TDI and of course the ML/GL bluetec. Also coming down the road is the new Jeep GC diesel - 240 hp 420 lbs of torque. Which is about what all the new ones are rated at give or take a hp or lb or two. Lots of choices out there and it is even getting better as more and more come on line and get approved for sale here. If you are near a Porsche store it is worth your time to stop in for a test drive of their new diesel. Amazing!

Last edited by UncleJ; 11-27-2012 at 08:12 AM.
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  #24  
Old 11-27-2012, 08:15 AM
Snipe656 Snipe656 is offline
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Originally Posted by UncleJ View Post
Henry, the X5d does have some "near competitors". The new Cayenne diesel, the T-egg and Audi TDI and of course the ML/GL bluetec. Also coming down the road is the new Jeep GC diesel - 240 hp 420 lbs of torque. Which is about what all the new ones are rated at give or take a hp or lb or two. Lots of choices out there and it is even getting better as more and more come on line and get approved for sale here. If you are near a Porsche store it is worth your time to stop in for a test drive of their new diesel. Amazing!
Have you driven the latest T-egg to compare to the Porsche? I have not but am curious how you would compare the two since same engines/transmissions from what I am reading on here. I drove the Porsche and honestly was not amazed by it but I am obviously not an SUV person so can't really compare accurately to if other SUVs to say what is amazing and what is okay and what is just bland.
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  #25  
Old 11-27-2012, 08:27 AM
wxmanCCM wxmanCCM is offline
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Originally Posted by Snipe656 View Post
...But bottom line, my experience has been that my diesel cars and trucks have cost me a lot more in repairs/maintenance for 200-300k miles than the gas sisters I or my family have had.
My experience is just the opposite.

The only issue I've had with my 2003 Dodge/Cummins in almost 125,000 miles is the lift (low-pressure fuel) pump failing. I replaced it with a FASS system which cost about $500, IIRC, but the stock replacement was much less than that.

I also had a 2002 Jetta TDI for about 128,000 miles before the 335d, and the only issue I had with that was one of the window brackets breaking, allowing the window to fall into the door. It was fixed under warranty. It was sold to an acquaintance of my son, and last we knew, it was still going strong with over 200,000 miles on it.

All of the gasoline vehicles I've owned have been far more problematic, although to be fair, we haven't had a gas car since 2002.
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