[die$el<3]

So impressed with my mpg last night on a short trip. Car has 131k miles on it 2009 and never had cbu cleanup yet. I must be one of the lucky ones .

[WreckerX5d]

It can do better. I once got 42.6 mpg over 353 miles. Just a JBD, think CBU and EGR blocked. That was one boring drive though trying to hypermile lol

[335dsleeper]

Damn. My best was 39.8mpg stock. Tuned it's like 18. Lol

[JayNC335d]

The best I have done is 39.6, with renntech and Wagner IC.. There was a net downhill change across the Carolinas... So not totally legit, but it was Columbia, so to Wilmington,nc so not a huge delta though... Also painful not to punch it when some boy racers went past...

[tek4tex]

Originally Posted by JayNC335d

The best I have done is 39.6, with renntech and Wagner IC.. There was a net downhill change across the Carolinas... So not totally legit, but it was Columbia, so to Wilmington,nc so not a huge delta though... Also painful not to punch it when some boy racers went past...

My best post alphabet delete bfc stage 2 on a 75 mile interstate drive at 80mph was 48.2. Of course that was with a 35 mph tailwind preceding the tornados. Wind is a pretty big factor for me.

[Mark M]

Originally Posted by tek4tex

My best post alphabet delete bfc stage 2 on a 75 mile interstate drive at 80mph was 48.2. Of course that was with a 35 mph tailwind preceding the tornados. Wind is a pretty big factor for me.

I got much better mpgs stock. The abc delete and tune has me struggling to get over 32mpg hand calculated.

[Mrdeezy]

Post tune I got lower highway mpg and higher city. my average is 31 hand calculated.
These guys who say the get 40-50. I really don't see how that possible, unless you coast down a 50 mile hill. Is that OBC calculated? That can't be right.

[mjn77]

Got over 40mpg a few times, and that is calculated and not the trip computer figures.

[GaryE30]

I would be interested to see what your average tank fill-up mpg is. That screen shot is cool to see, but this really doesn't mean anything for the efficiency of the car. I could probably get my 150k mile E36 M3 to hit 35mpg for that same distance traveled given the proper road conditions, but over a tank of fuel I will only get about 25mpg.

I'm not saying that the reading you got wasn't accurate, but I would not get too excited over it, especially since it was such a short trip. Heck, you could probably see 55+mpg if you reset your trip and only drove 5 miles on the highway with 0 elevation change and were going at a constant rate.

I usually reset my trip settings and if I immediately hit highway for 60 miles I can get 50+mpg (per the computer for that distance), but as soon as I hit the rolling hills or any traffic, it drops back down to realistic figures much closer to what I hand calculate which is about 38 mpg for mostly hwy driving for 600 miles or closer to 34mpg if its a mix city/hwy and 30mpg for mostly city.




These were two separate snapshots I took of my trip info on a 600 mile trek. For those distances, I may have been keeping that efficiency, but my final average mpg on fill-up was only 38mpg for 575 miles.

[335dFan]

Originally Posted by Mrdeezy

Post tune I got lower highway mpg and higher city. my average is 31 hand calculated.
These guys who say the get 40-50. I really don't see how that possible, unless you coast down a 50 mile hill. Is that OBC calculated? That can't be right.

I have 55k miles on my D. At this point in its life the best I have done on road trips is the high 36s. But during its earlier life, say in the 20k-30k miles range, I could repeatedly get 40 mpg on the road, and not babying it (not hammering it all the time either). I hand-calculate every fill-up and have a spreadsheet for each transaction involving the car. A bit obsessive I am.

[QUIKDZL]

I'm one of the lucky ones, too. 105k miles, no CBU, and I regularly get 40-42 mpg on the highway with cruise control set at 70-75 mph. For three years, my average mileage has been exactly 35. That's about 50% highway, 50% city/rural.

Since my awesome tune, I find it difficult to keep the car below 80, and rarely take more than five seconds to get to 60. So my fuelly has dropped to 34.9 mph. It's worth it.

[fareast1]

WTH??? I average 28 just puttering around!!!


Wait is this a hybrid thread?

[bizzleb109]

I get 30 to 35 mpg local and about 44 mpg motorway

[335dwanted]

I am curious how many people realize that the UK/Imperial gallon is 120% of the US gallon.

[larrysing]

My daughter (with her HEAVY foot) gets about 23 combined in her 2011 335d, and I get about 28 combined in my 2011 335d. I think hers has CBU issues.

My best highway trip was a quick jaunt to a basketball game, averaged 34.0 MPG at an average speed of 75.8 miles per hour for a 340 mile round trip. No non-diesel car I know about can do that well at those speeds.

Diesel Rules.

[QUIKDZL]

Originally Posted by 335dwanted

I am curious how many people realize that the UK/Imperial gallon is 120% of the US gallon.

I realize it, but I use American gallons.

[Zuke737]

I got 40 driving home from Raleigh, 1400 miles at 80 with AC on. Been getting 32 around town

[Nadir Point]

Sounds about right:



I wonder what a Prius gets at >80mph.

[mjn77]

Originally Posted by UberArchetype

I wonder what a Prius gets at >80mph.

They have trouble doing 80mph!

Remember reading a comparison between a 520d and a Prius and on the French motorways, the Prius couldn't keep up with 520d on the motorway at 80mph. They had to cruise at 70mph instead.

[mjn77]

Link to the comparison:

http://www.pistonheads.com/gassing/t...p?h=0&t=511017

[melonbread]

I got 38.5mpg doing from Austin to Dallas doing about 80 on the highway. I was impressed but the road to Dallas was pretty flat. I'm assuming these high mpg averages from relatively on a favorable condition basis.

[GaryE30]

My route started me in the foothills of the Appalachian Mountains in SC and I ended in MD around sea level. Many rolling hills and big cities/traffic along the way (Spartanburg, SC / Charlotte, NC / Raleigh, NC / Richmond, VA).

I hardly ever have more than 1/2 a mile of 0 elevation change in my regular commutes here in upstate SC.

Originally Posted by GaryE30

Heck, you could probably see 55+mpg if you reset your trip and only drove 5 miles on the highway with 0 elevation change and were going at a constant rate.

I actually tried a 140 mile trip this past weekend to test what I proposed earlier in the thread which was 55+mpg for only 5 miles of driving, but I hit way too many hills on my route. The entire route was a sine wave. Does anyone know a good elevation route tracker? All the ones I can find are used for cyclists and are a drop-point style route. The only one I found where you can enter starting and destination points was down.