Petrol consumption getting better.

sensible · 06-08-2016, 06:06 PM

I have done around 5000 miles in my 320i LCI (B48 engine) and noticed that my average mpg is getting better and better. My current average over that distance is 38.3 mpg.

Yesterday I drove the 27 miles to work which included motorway, A road, and some starting and stopping in traffic. When I got to work I looked at the trip computer and was amazed to see that I had averaged 53.5 mpg. I think this is really good for a car with this performance. My wife's under powered 1.6 Hryundai IX35 averages around 30 mpg. ..so very pleased.

Any of you had better from a 320i ?

Gixerste · 06-09-2016, 12:44 AM

That's quite impressive I only manage to get 58 mpg out of a fwd 2.0 Tdi Mk3 TT I had as a loan car

SH89 · 06-09-2016, 02:04 AM

The best I've had with my N20 320i is 43mpg on a 120 mile journey. Around town I normally get about 27mpg.

stefan4 · 06-09-2016, 02:58 AM

it doesn't surprise me that economy would get better as the engine loosens up, but not by that much! It's surprising how little differences in driving style, traffic etc can make such a huge mpg difference.

Rich9600 · 06-09-2016, 03:31 AM

That's impressive. The B series petrol engines really do seem to be capable of fantastic economy, when driven in a economic manner. They are really narrowing the economy gap.

Increased economy could be a combination of loosening up and warmer conditions. My 30d is a few mpg up this tank as its been 20C+ in sunny Cumbria... I get 35-55mpg commuting. So many variables.

Poor traffic in cold wet weather and 35mpg. Flowing traffic in warm weather and I got 55mpg driving in for morning shift yesterday!

dangerous_al · 06-09-2016, 04:20 AM

You should take the on board computer figures as an estimate only as they do tend to be a little optimistic by a couple of mpg. I have applied a correction factor to mine but it is still not totally accurate. I have a 330i with 6k miles on it. The other day I did a 220 mile trip mostly motorways but some A roads and returned 49.8mpg which is outstanding. On a run it will easily achieve mid 40's and is as you say getting better, but around town it kills it, with short journeys really punishing it down to mid 20's, so it really depends on the type of journey. My calculated overall average from new is 35.9mpg which I am very happy with

06-08-2016, 06:06 PM	#1
sensible Lieutenant Colonel 810 Rep 1,704 Posts Drives: BMW 420i M-Sport Gran Coupe Join Date: Aug 2015 Location: West Midlands UK iTrader: (0)	Petrol consumption getting better. I have done around 5000 miles in my 320i LCI (B48 engine) and noticed that my average mpg is getting better and better. My current average over that distance is 38.3 mpg. Yesterday I drove the 27 miles to work which included motorway, A road, and some starting and stopping in traffic. When I got to work I looked at the trip computer and was amazed to see that I had averaged 53.5 mpg. I think this is really good for a car with this performance. My wife's under powered 1.6 Hryundai IX35 averages around 30 mpg. ..so very pleased. Any of you had better from a 320i ? Attached Images __________________ 2019 420i B48 LCI M-Sport Gran Coupe \| Sapphire Black \| Black Dakota leather \| Sports auto \| M-Sport plus pack \| Last edited by sensible; 06-08-2016 at 06:14 PM..
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06-09-2016, 12:44 AM	#2
Gixerste Lieutenant 191 Rep 476 Posts Drives: F36 430D m sport, 340i m sport Join Date: Sep 2014 Location: North East England iTrader: (0)	That's quite impressive I only manage to get 58 mpg out of a fwd 2.0 Tdi Mk3 TT I had as a loan car
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06-09-2016, 02:04 AM	#3
SH89 Private First Class 45 Rep 199 Posts Drives: Mercedes Benz C300 Join Date: Dec 2014 Location: North East England iTrader: (0)	The best I've had with my N20 320i is 43mpg on a 120 mile journey. Around town I normally get about 27mpg.
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06-09-2016, 02:58 AM	#4
stefan4 Colonel 1084 Rep 2,376 Posts Drives: 340i on order Join Date: Mar 2013 Location: sheffield iTrader: (0)	it doesn't surprise me that economy would get better as the engine loosens up, but not by that much! It's surprising how little differences in driving style, traffic etc can make such a huge mpg difference. __________________ Current - X3m Comp Gone but not forgotten - F80 m3 Comp, F30 340i, F30 - 320i
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06-09-2016, 03:31 AM	#5
Rich9600 Colonel 741 Rep 2,511 Posts Drives: i4 M50 Join Date: Nov 2013 Location: UK iTrader: (0)	That's impressive. The B series petrol engines really do seem to be capable of fantastic economy, when driven in a economic manner. They are really narrowing the economy gap. Increased economy could be a combination of loosening up and warmer conditions. My 30d is a few mpg up this tank as its been 20C+ in sunny Cumbria... I get 35-55mpg commuting. So many variables. Poor traffic in cold wet weather and 35mpg. Flowing traffic in warm weather and I got 55mpg driving in for morning shift yesterday! __________________ Driving i4 M50 (G26) Previous 340i Touring MSport (F31)
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06-09-2016, 04:20 AM	#6
dangerous_al Major 403 Rep 1,032 Posts Drives: X3 M40i G01 2020 Join Date: Apr 2009 Location: Bristol England iTrader: (0)	You should take the on board computer figures as an estimate only as they do tend to be a little optimistic by a couple of mpg. I have applied a correction factor to mine but it is still not totally accurate. I have a 330i with 6k miles on it. The other day I did a 220 mile trip mostly motorways but some A roads and returned 49.8mpg which is outstanding. On a run it will easily achieve mid 40's and is as you say getting better, but around town it kills it, with short journeys really punishing it down to mid 20's, so it really depends on the type of journey. My calculated overall average from new is 35.9mpg which I am very happy with
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