[Itsabdi]

if you want to participate please state your

* engine model
* Year
* gearbox type
* fuel type
* RPM SHIFT
*MPG figure

just trying to find out whats the sweet spot for cruising about for different engines and transmission

ill start

2.0D engine
2011
6MT
diesel
1.8RPM at cruising speed and 3.5RPM at drive it like i stole it mode.
48mpg on a reg

?

[wolly440]

E92 320d LCI 184bhp manual
1.3 rpm, 54mph, 55mpg

and Miss daisy sat in the back

[rasa bmw]

never look at rpm,,its about knowing your car..especially a derv..you know when to change when giving it some..its a feel thing..leave it too late and hang onto gears and your going backwards..

[Dann]

*N54
*2009
*6mt
*Petrol
*Normally anywhere between 2 and 3k when cold.
Anywhere between 2 and 7k when hot and depending on how I feel like driving. If on a motorway sliproad I'd use redlines as intended.
*Depends on driving. Low of 20mpg round town, High 40mpg on a long run. Average 25/26mpg

[AD18]

N55
2010
DCT
Petrol
Usually leave car in D for commuting, it shifts between 1.5-2k.
Average is 26mpg but current commute doesn't allow engine to warm up properly so most of the journey and that mpg figure is based on an engine not at operating temps.

[ChawenHalo]

N57 2010
Manual box
If cruising around 2000rpm
If getting on 3000 rpm
If gunning it redline 6500 rpm
Avg 8.0L /100km

[sirleeofroy]

Originally Posted by ChawenHalo

If gunning it redline 6500 rpm

Surely you meant 4500 RPM?!

[Dormermike]

N53 zf8 auto

2500 rpm max if cold, so leave it in D and the box shifts around 1500-2500.

When it's hot I usually stretch it's legs and anything up to redline (7000) especially on the motorways.

Making progress on the streets when safe to do so around 4000-4500.

[AWSAWS]

* engine model
* Year
* gearbox type
* fuel type
* RPM SHIFT
*MPG figure


335i (3 litre twin turbo)
2009
DCT
petrol

21mpg average


If I'm driving sedately then then anything over 2000 rpm.

If I'm driving as fast as possible then redline, anywhere near 7000 rpm (Got upgraded turbos and port meth injection)

If I want to drive fast but not mentally fast then anything over 5500 rpm

Can do 38 mpg in the 50 zones when at a steady speed.

[djgandy]

S65, 2011, DCT, Petrol, 8400, 20

[Itsabdi]

Originally Posted by djgandy

S65, 2011, DCT, Petrol, 8400, 20

bit surprised how a big v8 is only a couple of mpg down from a 3L turbo. would have thought it would be a much bigger difference

[ChawenHalo]

Originally Posted by sirleeofroy

Surely you meant 4500 RPM?!

You might well be right, its no turbo petrol, though I was surprised by its appetite for revs. You definitely can bite 500 rpm into the red line so maybe that would be 5500 rpm, but I'd have to check.

[Dann]

Originally Posted by Itsabdi

bit surprised how a big v8 is only a couple of mpg down from a 3L turbo. would have thought it would be a much bigger difference

That's because shifting RPM will have little to do with fuel consumption.

The 35i averages could be sitting in lots of traffic, where the M3 sits in much less. It may be a good guide, but it's no where near accurate enough for a true comparison.

[sirleeofroy]

Originally Posted by ChawenHalo

You might well be right, its no turbo petrol, though I was surprised by its appetite for revs. You definitely can bite 500 rpm into the red line so maybe that would be 5500 rpm, but I'd have to check.

I'm not sure if your xDrive is any different to my non xDrive but my dial maxes out at 5500rpm, in fact I don't think it can even rev that high. A lick under 5000rpm is the max in reality.

Whilst I'm here:

* engine model
* Year
* gearbox type
* fuel type
* RPM SHIFT
*MPG figure

N57 (remapped)
2009
Manual
Diesel

2000 - 2500rpm when pootling about and anything between 2500 - 4500rpm when getting a move on.

29MPG currently, I did reset it the other day and went for a "drive" in the dales on Sunday so down over normal.

[djgandy]

Originally Posted by Dann

That's because shifting RPM will have little to do with fuel consumption.

The 35i averages could be sitting in lots of traffic, where the M3 sits in much less. It may be a good guide, but it's no where near accurate enough for a true comparison.

I think my 335 did around 22-23 on a similar cycle, but it was an MT and also 200kgs lighter!

The M3 is not that great on the motorway. It has much shorter gearing than the DCT 335i (3.14 vs 2.56) meaning cruise is around 3000rpm

[hazkirby]

* engine model - n52
* Year - 2005
* gearbox type - manual
* fuel type - petrol
* RPM SHIFT - 3000RPM avg
*MPG figure 30mpg

[Itsabdi]

thanks everyone for stating your figures.
it helped me allot.
the figures got me swaying towards a inline 6 as this convinced me that i wont a 4pot diesel anymore.

might be join the unfortunate N54 335i gang soon ?
again thx you all for your input

[Andy198712]

Originally Posted by Itsabdi

thanks everyone for stating your figures.
it helped me allot.
the figures got me swaying towards a inline 6 as this convinced me that i wont a 4pot diesel anymore.

might be join the unfortunate N54 335i gang soon ?
again thx you all for your input

have you seen the "how much has your 335i cost you this month" thread.... eye watering

[Itsabdi]

Originally Posted by Andy198712

have you seen the "how much has your 335i cost you this month" thread.... eye watering

yes i did. still think its worth it as now am always cycling to work.

still will be doing my due diligence and get a well serviced one. props a 56 to 58 plate 6 speed manual one with all the major issues dealt with.

i dont knw why but something about a fast estate that appeals to me now, not like i need the room aswell lol

if anyone thinking of swapping one for a 4pot diesel let me know lol

[Dann]

Originally Posted by Itsabdi

yes i did. still think its worth it as now am always cycling to work.

still will be doing my due diligence and get a well serviced one. props a 56 to 58 plate 6 speed manual one with all the major issues dealt with.

i dont knw why but something about a fast estate that appeals to me now, not like i need the room aswell lol

if anyone thinking of swapping one for a 4pot diesel let me know lol

Well serviced means nothing to a 335i. You'll want as later one as possible (cheaper tax - £300 instead of nearly £600)

You need an enthusiast owned car with either sub 60k miles (for warranty) or all the big ticket items replaced. Even then, things like waterpumps may need doing more than once. Same goes for the HPFP.

If you have your heart set on a tourer, you'll have more luck winning the lottery.

[ChawenHalo]

Originally Posted by sirleeofroy

I'm not sure if your xDrive is any different to my non xDrive but my dial maxes out at 5500rpm, in fact I don't think it can even rev that high. A lick under 5000rpm is the max in reality.

Whilst I'm here:

* engine model
* Year
* gearbox type
* fuel type
* RPM SHIFT
*MPG figure

N57 (remapped)
2009
Manual
Diesel

2000 - 2500rpm when pootling about and anything between 2500 - 4500rpm when getting a move on.

29MPG currently, I did reset it the other day and went for a "drive" in the dales on Sunday so down over normal.

Just checked, you're correct redline starts at 5000 rpm and engine cut off is just above 5250 rpm (its no S54 thats for sure, but very good for a diesel). My current MPG in old money is 35.3 MPG mixed driving.

[sirleeofroy]

Originally Posted by ChawenHalo

Just checked, you're correct redline starts at 5000 rpm and engine cut off is just above 5250 rpm (its no S54 thats for sure, but very good for a diesel). My current MPG in old money is 35.3 MPG mixed driving.

Indeed, they do rev well for a diesel..... a mate of mine didn't even realise it was a diesel when I took him out for a blast, it was only when he got out of the car he twigged the engine note (and the lack thereof!).