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35i with DCT & Fuel Consumption.
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- Senior Member
- Posts: 2551
- Joined: Fri May 26, 2017 3:40 pm
- Location: Plymouth
35i with DCT & Fuel Consumption.
Hi all,
Some of you may have seen my earlier post regarding my 35i and 'shift indicators' when a DCT box is fitted.
This post was made as I was somewhat dismayed at getting 16mpg around town, I live in Plymouth and it is extremely 'hilly'.
The general consensus was no shift indicators are available when DCT is fitted.
So, I refilled the car to the brim and have since driven her only in manual mode using the paddles, so far I am getting over 22 mpg around town!! This is simply by keeping revs under 1500, the DCT will not let the engine labour even in manual mode so no chance of engine damage.
I really enjoy using the paddles and the extra mpg is a bonus, not worked it out exactly but mpg has increased by 40% ish - at the pump over a full tank that's a significant saving.
Of course we all know that SMILES PER GALLON are more important but sometimes you have to be frugal.....
Looking forward to seeing some of you at zedfest in a few days
Some of you may have seen my earlier post regarding my 35i and 'shift indicators' when a DCT box is fitted.
This post was made as I was somewhat dismayed at getting 16mpg around town, I live in Plymouth and it is extremely 'hilly'.
The general consensus was no shift indicators are available when DCT is fitted.
So, I refilled the car to the brim and have since driven her only in manual mode using the paddles, so far I am getting over 22 mpg around town!! This is simply by keeping revs under 1500, the DCT will not let the engine labour even in manual mode so no chance of engine damage.
I really enjoy using the paddles and the extra mpg is a bonus, not worked it out exactly but mpg has increased by 40% ish - at the pump over a full tank that's a significant saving.
Of course we all know that SMILES PER GALLON are more important but sometimes you have to be frugal.....
Looking forward to seeing some of you at zedfest in a few days
Mark
Plymouth
E89
35i
Carmine Red
Black leather
Plymouth
E89
35i
Carmine Red
Black leather
- Chippie
- Senior Member
- Posts: 2311
- Joined: Tue Apr 30, 2019 9:11 pm
- Location: Wakefield
35i with DCT & Fuel Consumption.
I have to agree with your assumptions although I personally haven’t checked the MPG only have had mine about 6 weeks, but I have felt that the engine does rev higher than needed before changing up, having said that though it does sound great
E89 35is space grey Kansas coral red leather
- Jollyjoiner
- Senior Member
- Posts: 2008
- Joined: Sat Nov 29, 2014 9:32 am
- Location: Chesterfield
35i with DCT & Fuel Consumption.
Keeping the revs under 1500
2009 35i DCT silver
SLT mapped to 365bhp
SLT mapped to 365bhp
- sunnydays
- Member
- Posts: 983
- Joined: Fri Sep 23, 2016 7:50 am
35i with DCT & Fuel Consumption.
Hi OP,
Have you considered switching the car off. Dis engaging the handbrake, shifting in to neutral and having someone push or tow the car while you are in it?
This will give you even higher mpg and it works anywhere!
Have you considered switching the car off. Dis engaging the handbrake, shifting in to neutral and having someone push or tow the car while you are in it?
This will give you even higher mpg and it works anywhere!
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- Member
- Posts: 180
- Joined: Sat Feb 25, 2017 1:35 pm
35i with DCT & Fuel Consumption.
Get an OBDll cable & code off 3 of your cylinders so that you have a 1.5 litre single turbo engine and double your mpg
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- Member
- Posts: 259
- Joined: Sun Apr 15, 2012 2:33 pm
- Location: Somerset
35i with DCT & Fuel Consumption.
Have you checked all your brake callipers are ok? You might have a sticking caliper or something? FWIW my long term average for my 35iS is 28.2mpg, but even when I lived in Bath/Bristol which are also horrendously busy and hilly I would get 22-24! No manual intervention required.
Pure Traction 35iS - Sold!
Carbon Black E86 3.0si Coupe - Gone but not forgotten
Carbon Black E86 3.0si Coupe - Gone but not forgotten
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- Member
- Posts: 144
- Joined: Thu May 09, 2019 1:34 pm
- Location: Marina del Rey, California
35i with DCT & Fuel Consumption.
Depending on your service history and mileage, cleaning your intake valves of carbon deposits may bring significant further gains in mileage and performance, and idle running characteristics.
2011 sDrive 35i Alpine White
100,000 miles 3rd owner
Other BMW is a 2016 C650 Sport scooter-beast
100,000 miles 3rd owner
Other BMW is a 2016 C650 Sport scooter-beast
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- Lifer
- Posts: 7020
- Joined: Fri Jun 29, 2012 7:53 am
- Location: High Peak,Derbyshire.
35i with DCT & Fuel Consumption.
Mine did around 26mpg on a daily crappy commute of hilly 6 miles B roads..40mpg could be had on a quiet run.
You should be getting better than that.
You should be getting better than that.
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- Member
- Posts: 291
- Joined: Sat Dec 25, 2010 8:32 pm
- Location: Stoke on Trent
35i with DCT & Fuel Consumption.
Not much city work but I average about 29mpg, but can't get it above 33 even on a run
- jimbo1958
- Lifer
- Posts: 6471
- Joined: Wed Jun 09, 2010 10:49 pm
- Location: Romancing Your Mum
35i with DCT & Fuel Consumption.
Only used to get 17-18 out of my 35i DCT around town.
Z4 e85 3.0 - GONE
Z4 e89 35i - GONE
Jaguar F Type V6s Roadster
Abarth 695 Rivale
Z4 e89 35i - GONE
Jaguar F Type V6s Roadster
Abarth 695 Rivale
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- Member
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- Joined: Sun Apr 26, 2015 7:16 pm
35i with DCT & Fuel Consumption.
Sounds about right. Hilly, traffic with starts and stops.
What do you get on a steady motorway run, that's the question.
What do you get on a steady motorway run, that's the question.
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- Senior Member
- Posts: 2551
- Joined: Fri May 26, 2017 3:40 pm
- Location: Plymouth
35i with DCT & Fuel Consumption.
Hi All,
Loving the sarcasm only had the car 8 days and it struck me immediately that it was revving far too high when climbing the hills we have around here, especially on a hill start. Car only has 24k miles on it, full BMW history done yearly regardless and one month ago a full inspection from BMW with no faults found (ok stop laughing). I am familiar with Bristol but the hills here are another level, the one at the end of my road is hard enough to walk up, no joke. I tried applying the brakes as hard as I could and applying the handbrake whilst footbrake full on. Left it overnight on the level, in the morning I released the handbrake and it pushed easily, so no binding. WIll find out what a long run gives me on the way to ZedFest in July
On the subject of inlet port coking, it just struck me that running a can of EGR cleaner (coke remover) through the inlet system once a month might be a good idea, any thoughts??
Loving the sarcasm only had the car 8 days and it struck me immediately that it was revving far too high when climbing the hills we have around here, especially on a hill start. Car only has 24k miles on it, full BMW history done yearly regardless and one month ago a full inspection from BMW with no faults found (ok stop laughing). I am familiar with Bristol but the hills here are another level, the one at the end of my road is hard enough to walk up, no joke. I tried applying the brakes as hard as I could and applying the handbrake whilst footbrake full on. Left it overnight on the level, in the morning I released the handbrake and it pushed easily, so no binding. WIll find out what a long run gives me on the way to ZedFest in July
On the subject of inlet port coking, it just struck me that running a can of EGR cleaner (coke remover) through the inlet system once a month might be a good idea, any thoughts??
Mark
Plymouth
E89
35i
Carmine Red
Black leather
Plymouth
E89
35i
Carmine Red
Black leather
- Smartbear
- Lifer
- Posts: 13685
- Joined: Wed Feb 05, 2014 6:54 pm
- Location: a barn in Somerset
35i with DCT & Fuel Consumption.
Unfortunately that’s not going to clear away any carbon from the inlet ports or valves as it’s a direct injection engine and it only has air flowing through the inlet manifoldmcbutler wrote: ↑Sun Jun 23, 2019 9:44 pm Hi All,
Loving the sarcasm only had the car 8 days and it struck me immediately that it was revving far too high when climbing the hills we have around here, especially on a hill start. Car only has 24k miles on it, full BMW history done yearly regardless and one month ago a full inspection from BMW with no faults found (ok stop laughing). I am familiar with Bristol but the hills here are another level, the one at the end of my road is hard enough to walk up, no joke. I tried applying the brakes as hard as I could and applying the handbrake whilst footbrake full on. Left it overnight on the level, in the morning I released the handbrake and it pushed easily, so no binding. WIll find out what a long run gives me on the way to ZedFest in July
On the subject of inlet port coking, it just struck me that running a can of EGR cleaner (coke remover) through the inlet system once a month might be a good idea, any thoughts??
Rob
e89 Sdrive 20i, plenty of mumbo & good economy-the thinking bears z4
e89 Sdrive 30i, this ones busted, pass me another...
e85 3.0si sold