325i Sport MPG ?

Tue Dec 28, 2010 1:53 pm

I'm really hating this thread, my 316i does about 250miles to a tank, I have a new tank in it, I do a fair few town miles, but also the same probably on the motorway. whether i boot it or not i seem to get around the 250 mark. most I have ever seen is about 270/280. it is on 163,000 though.

I used to own an e34 525i sport (m50) and did bristol to coventry and back on about £20. doing 70.

hoping to convert my 316i to a 318is/325i. sounds like it will be better on fuel too.

Tue Dec 28, 2010 2:03 pm

Ouch! My 316i used to consistently get just over 300 miles to a tank, but that was only after fixing quite a few issues.. Does it run properly and not stink of fuel etc? You might find a good service makes a world of difference...

the bigger engines do well on the motorway though... the 316i has a stupid diff ratio (4.27?) which makes it work pretty hard at 70mph

Tue Dec 28, 2010 4:43 pm

kieran325 wrote:I run a 325, full BTB system and a few weeks ago I did 200 miles on half a tank of V Power, done another 110 since and its on the quarter mark, not bad MPG but I didn't work it out

i need to get my 325 sorted then, i get 110mile out of a full tank!! no joke, i only go from home to work then back and thats 8mile aday, no wonder im allways out of pocket

Tue Dec 28, 2010 4:46 pm

its even got the chip off speedtouch, new temp switch from bmw, new leads, plugs ect ect, next is recon injectors i think

Tue Dec 28, 2010 5:17 pm

110 miles from a full tank ?! There's definitely something wrong there. Does it smell like it's running rich? Have you looked at the spark plugs?

Was the new temp sensor the blue sensor?

Mind you, if you're only doing 8 miles a day - which i'm assuming is 4 miles each trip then you are going to see lousy fuel consumption, given that each time you drive it the engine never gets a chance to warm up properly and is running almost double fuel for those 4 miles!

Tue Dec 28, 2010 5:22 pm

ive had it on emisions tester in work and its comes up fine on that, when cold the exhaust pops as i change gear, sounds good but it sounds like its dumping fuel and yes it was blue temp, going to buy aset if injectors off ebay then send them to get rocond

Tue Dec 28, 2010 5:53 pm

Why not get your current ones reconditioned?

Tue Dec 28, 2010 5:55 pm

i have to send them off and need to use car everyday

Tue Dec 28, 2010 6:44 pm

HJG-E30 wrote:Mind you, if you're only doing 8 miles a day - which i'm assuming is 4 miles each trip then you are going to see lousy fuel consumption, given that each time you drive it the engine never gets a chance to warm up properly and is running almost double fuel for those 4 miles!

This is a situation in which a single point LPG conversion really scores. It's always easiest to start the car from cold using petrol, but for nine months of the year it can be switched to LPG immediately after, and in the remaining three after around a quarter of a mile.
LPG needs no cold engine enrichment, so consumption is 'normal' from cold, and engine wear due to bore wash doesn't happen either.

Tue Dec 28, 2010 6:47 pm

i just don't believe that! 110 miles to a tank full? ie 60 litres? i get more miles to a tank on track going round the nurburgring in my 2.7 M20

Tue Dec 28, 2010 7:04 pm

Simon13 wrote:i just don't believe that! 110 miles to a tank full? ie 60 litres? i get more miles to a tank on track going round the nurburgring in my 2.7 M20

finally a set of figures worse than mine.......though i have managed about 9mpg once over a really short distance according to the BMW OBC.

Tue Dec 28, 2010 8:14 pm

Ilkorin wrote:Ouch! My 316i used to consistently get just over 300 miles to a tank, but that was only after fixing quite a few issues.. Does it run properly and not stink of fuel etc? You might find a good service makes a world of difference...

The bigger engines do well on the motorway though... the 316i has a stupid diff ratio (4.27?) which makes it work pretty hard at 70mph

Yes its pretty high revving at 70mph, espically compared to my Mum's e46 316i (1.9). So suppose that doesnt help towards the mpg.

Its due a service, but I cant see it becoming amazing on fuel overnight. fingerscrossed looking at a vauxhall combo tomorow for work so the E30 will become a weekend toy/project.

I have to say though it goes really well for a 1.6 8v, like it shouldn't go as well as it does for a 1.6, so that might have something to do with the fuel useage.

Tue Dec 28, 2010 8:49 pm

pony wrote:
Simon13 wrote:i just don't believe that! 110 miles to a tank full? ie 60 litres? i get more miles to a tank on track going round the nurburgring in my 2.7 M20
finally a set of figures worse than mine.......though i have managed about 9mpg once over a really short distance according to the BMW OBC.

Mate thats on TRACK! not on the road. The same car then did 400 miles to the next tank plodding 80mph home on the motorway, loaded up

Tue Dec 28, 2010 9:22 pm

Simon13 wrote:
pony wrote:
Simon13 wrote:i just don't believe that! 110 miles to a tank full? ie 60 litres? i get more miles to a tank on track going round the nurburgring in my 2.7 M20
finally a set of figures worse than mine.......though i have managed about 9mpg once over a really short distance according to the BMW OBC.
Mate thats on TRACK! not on the road. The same car then did 400 miles to the next tank plodding 80mph home on the motorway, loaded up

then your engine seems to be running fine whats the problem?

Tue Dec 28, 2010 9:31 pm

pony, have you seen this thread?
http://www.e30zone.net/modules.php?name ... 66#2057066

Tue Dec 28, 2010 9:47 pm

60L, isn't that a large tank? I've never put more than ~43L in mine (but then again I haven't run it down to the light ever either)...

Tue Dec 28, 2010 10:06 pm

pony wrote:
Simon13 wrote:
pony wrote: finally a set of figures worse than mine.......though i have managed about 9mpg once over a really short distance according to the BMW OBC.
Mate thats on TRACK! not on the road. The same car then did 400 miles to the next tank plodding 80mph home on the motorway, loaded up
then your engine seems to be running fine whats the problem?

that theres something wrong with yours!

Tue Dec 28, 2010 10:12 pm

My Auto Touring does 25-27MPG, 63L tank

Wed Dec 29, 2010 7:00 pm

but as HJG-E30 stated, by the time i get to work the car is only just starting to get warm, its been nasty on fuel ever since i got it 6mths ago but as i said im going to get the injectors done and if it doesnt improve then its bye bye bmw, theres a tec 2 e30 engine on ebay, might buy that and give it a full rebuild and fit it