335d mpg

HighlandPete · 03-22-2014, 07:43 AM

Quote:

Originally Posted by Ray335d

That seems a bit low considering 70% motorway. Are these brim-to-brim figures?

Wonder what the average mph is over those motorway miles? That will have a bearing on what mpg will be.

HighlandPete

Tengocity · 03-22-2014, 10:10 AM

Quote:

Originally Posted by Ray335d

That seems a bit low considering 70% motorway. Are these brim-to-brim figures?

Similar to ours and ours is probably the same proportion motorway, albeit M25 and M4 rush hours, so quite slow.

brommy · 03-22-2014, 10:58 AM

After 2.5 weeks of ownership and 700 miles, I know my 335d can average as high as 54mpg (160 mile drive back from dealer), 36mpg (commute trips where the engine doesn't get to temperature) and less than 30mpg when I'm using most of the 300+hp. No surprises for me.

As I think that is perfectly acceptable (given the available performance I actually think it is great), should I stop worrying about 'brim to brim' figures and just enjoy my car?

Tengocity · 03-22-2014, 11:26 AM

Quote:

Originally Posted by brommy

After 2.5 weeks of ownership and 700 miles, I know my 335d can average as high as 54mpg (160 mile drive back from dealer), 36mpg (commute trips where the engine doesn't get to temperature) and less than 30mpg when I'm using most of the 300+hp. No surprises for me.

As I think that is perfectly acceptable (given the available performance I actually think it is great), should I stop worrying about 'brim to brim' figures and just enjoy my car?

Yes! Now you can do about it really, without driving your car in a way that means you may as well have bought a 318d!

brommy · 03-22-2014, 03:50 PM

Quote:

Originally Posted by Tengocity

Yes! Now you can do about it really, without driving your car in a way that means you may as well have bought a 318d!

I should pass the 1200 miles run-in distance in about 2 weeks.

DazC · 03-22-2014, 04:31 PM

Quote:

Originally Posted by brommy

I should pass the 1200 miles run-in distance in about 2 weeks.

Passed mine a couple of days ago so gave it a celebratory booting!

brommy · 03-23-2014, 04:36 AM

Quote:

Originally Posted by DazC

Passed mine a couple of days ago so gave it a celebratory booting!

Fantastic! Can't wait.

Waitey · 03-23-2014, 05:47 AM

Quote:

Originally Posted by HighlandPete

Wonder what the average mph is over those motorway miles? That will have a bearing on what mpg will be.

HighlandPete

Average MPH is in the 50's.

The difference I get running at 81 on the speedo (77 on gps) and running at 76 on the speedo (70 on the gps) is around 4mpg.

Oddly though the difference between running at 81 and running at 100 is only 0.3mpg.

Obvious gearing and mapping advantages to driving at German speeds.

Waitey · 03-23-2014, 05:48 AM

Quote:

Originally Posted by Ray335d

That seems a bit low considering 70% motorway. Are these brim-to-brim figures?

Yus they are. Diesel comes from my own pump so I'm a bit anal about recording it.

brommy · 03-23-2014, 05:50 AM

Quote:

Originally Posted by Waitey

Oddly though the difference between running at 81 and running at 100 is only 0.3mpg.

Really? That surprises me, A LOT!

Waitey · 03-23-2014, 05:55 AM

Quote:

Originally Posted by brommy

Really? That surprises me, A LOT!

Wind et al will play a role but yes. One run where I was late for the channel tunnel and one run at ordinary speeds. Same time of day, same traffic load, same ish weather. Distance covered being 280miles.

81 run gave 40.4mpg.

100 gave 40.1mpg.

The same run at 75 gives 44.7mpg.

brommy · 03-23-2014, 06:07 AM

Quote:

Originally Posted by Waitey

Wind et al will play a role but yes. One run where I was late for the channel tunnel and one run at ordinary speeds. Same time of day, same traffic load, same ish weather. Distance covered being 280miles.

81 run gave 40.4mpg.

100 gave 40.1mpg.

The same run at 75 gives 44.7mpg.

In my limited ownership of my new 335d, your first and last figures are slightly lower than I'm experiencing, but your 100mph figure is astonishingly good. Genuine question, is there a chance you had a 15 to 20mph tail wind?

Waitey · 03-23-2014, 06:22 AM

The route is west to east, so if anything I'd have a head wind. Both days were reasonably still though.

brommy · 03-23-2014, 06:28 AM

Quote:

Originally Posted by Waitey

The route is west to east, so if anything I'd have a head wind. Both days were reasonably still though.

I'll stick with 'astonishingly good' then!

I bet there aren't many family saloon size cars that will touch 40mpg at 100mph. High gearing helps - just 2200rpm at 100mph in 8th.

Waitey · 03-23-2014, 06:36 AM

Quote:

Originally Posted by brommy

I'll stick with 'astonishingly good' then!

I bet there aren't many family saloon size cars that will touch 40mpg at 100mph. High gearing helps - just 2200rpm at 100mph in 8th.

That's the thinking I had too. I imagine while off boost between 2krpm and 2.5krpm it runs fairly lean to promote MPG at German unrestricted and 140kph limits.

brommy · 03-23-2014, 06:52 AM

Quote:

Originally Posted by Waitey

That's the thinking I had too. I imagine while off boost between 2krpm and 2.5krpm it runs fairly lean to promote MPG at German unrestricted and 140kph limits.

If I get pulled at a ton, I'll let them know 'I'm saving the planet'.

HighlandPete · 03-23-2014, 06:14 PM

Quote:

Originally Posted by Waitey

Average MPH is in the 50's.

The difference I get running at 81 on the speedo (77 on gps) and running at 76 on the speedo (70 on the gps) is around 4mpg.

Oddly though the difference between running at 81 and running at 100 is only 0.3mpg.

Obvious gearing and mapping advantages to driving at German speeds.

Something is not stacking up with your high speed figures. We all know the physics of speed and the substantial additional HP required to drive faster, 80 - 100mph.

Wonder what you'd be seeing in controlled conditions? What you indicate would be a very weird BSFC map, assuming both speeds were in 8th gear.

There are not many controlled tests which go to, or above 100mph. A graph which I have seen for the M57 engine in a 535d shows a linear mph vs. mpg drop off from 50 to 110mph, is only then very slowly curves to 155mph.

I can't see the current engine being much different... how did you get the average figures? OBC?

HighlandPete

FSE23 · 03-23-2014, 07:58 PM

I'm going to Switzerland this week diverting my route through Germany ( but only about 100 miles) and hopefully I can get my 1200 miles mark before so I will give it a kickdown and can see the "REAL" mpg

badders74 · 04-03-2014, 03:25 AM

Currently i am averaging 41.2MPG. This is based over 320 miles of driving. The main drive is motorway but 35% has been on 30mph roads. I have also had a few blasts in the car.

Today driving into work on Motorway and normal roads i did just under 49mpg.
NOW this included driving through about 9 miles of 50mph limits too and about 30% 30mph roads too.

I cannot see a 335D doing 50mpg over a full tank but then again I haven't driven like a granny for a full tank either!

Overall this impressed with the cars fuel consumption! 41mpg for a car thats only done 700 miles isnt bad?!?!?

Waitey · 04-03-2014, 07:46 AM

Bit better this time. OBC adjusted by 4%.

sms720 · 04-03-2014, 07:59 AM

486 miles out of tank for a 300bhp+ car is really impressive. Were you taking it easy or just driving normally for that tank?

Waitey · 04-03-2014, 04:17 PM

About 60% motorway and 30% normal and 10% hooning around.

03-22-2014, 10:58 AM	#377
brommy Captain 32 Rep 633 Posts Drives: F30 335d Join Date: Dec 2013 Location: UK, North Worcs iTrader: (0)	After 2.5 weeks of ownership and 700 miles, I know my 335d can average as high as 54mpg (160 mile drive back from dealer), 36mpg (commute trips where the engine doesn't get to temperature) and less than 30mpg when I'm using most of the 300+hp. No surprises for me. As I think that is perfectly acceptable (given the available performance I actually think it is great), should I stop worrying about 'brim to brim' figures and just enjoy my car? __________________ 335d collected from TRL on 4/3/14
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03-23-2014, 06:22 AM	#387
Waitey First Lieutenant 36 Rep 385 Posts Drives: F31 D3 Bi-Turbo Join Date: Dec 2013 Location: York iTrader: (0)	The route is west to east, so if anything I'd have a head wind. Both days were reasonably still though.
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03-23-2014, 07:58 PM	#392
FSE23 Major 256 Rep 1,442 Posts Drives: C63 AMG 2019 Join Date: Dec 2013 Location: Scotland iTrader: (0)	I'm going to Switzerland this week diverting my route through Germany ( but only about 100 miles) and hopefully I can get my 1200 miles mark before so I will give it a kickdown and can see the "REAL" mpg __________________ Current: 2019 C63 AMG Selenite Grey Previous: 2017 C43 AMG Coupe Polar White 2014 F30 335d Msport MG with ACS springs 2007 E92 335i BS ultimate drive Last edited by FSE23; 03-23-2014 at 08:14 PM..
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04-03-2014, 03:25 AM	#393
badders74 Lieutenant 31 Rep 491 Posts Drives: 335d X Drive Join Date: Jan 2014 Location: midlands iTrader: (0)	Currently i am averaging 41.2MPG. This is based over 320 miles of driving. The main drive is motorway but 35% has been on 30mph roads. I have also had a few blasts in the car. Today driving into work on Motorway and normal roads i did just under 49mpg. NOW this included driving through about 9 miles of 50mph limits too and about 30% 30mph roads too. I cannot see a 335D doing 50mpg over a full tank but then again I haven't driven like a granny for a full tank either! Overall this impressed with the cars fuel consumption! 41mpg for a car thats only done 700 miles isnt bad?!?!?
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04-03-2014, 07:46 AM	#394
Waitey First Lieutenant 36 Rep 385 Posts Drives: F31 D3 Bi-Turbo Join Date: Dec 2013 Location: York iTrader: (0)	Bit better this time. OBC adjusted by 4%. __________________ Current: Range Rover Sport - Alpina D3 Bi Turbo
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04-03-2014, 07:59 AM	#395
sms720 First Lieutenant 40 Rep 380 Posts Drives: F30 335d Join Date: Jan 2014 Location: Northern Ireland iTrader: (0)	486 miles out of tank for a 300bhp+ car is really impressive. Were you taking it easy or just driving normally for that tank? __________________ Current: F30 335d xDrive MSport (EBII/Black Dakota)
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04-03-2014, 04:17 PM	#396
Waitey First Lieutenant 36 Rep 385 Posts Drives: F31 D3 Bi-Turbo Join Date: Dec 2013 Location: York iTrader: (0)	About 60% motorway and 30% normal and 10% hooning around.
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