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Fuel consumption

Printed From: Bavarian-Board.co.uk - BMW Owners Discussion Forum
Category: Technical & Model Specific Forums
Forum Name: BMW 5 Series
Forum Discription: This forum will deal with any issues on the BMW 5 Series (E12, E28, E34, E39, E60 & E61)
URL: http://www.bavarian-board.co.uk/forum_posts.asp?TID=17770
Printed Date: 30-April-2024 at 12:28


Topic: Fuel consumption
Posted By: Commuter
Subject: Fuel consumption
Date Posted: 17-May-2005 at 15:19
Help!
I'm thinking of buying an E34 for my daily 80-mile commute. I'm thinking
that a 525 or 530 will have the right blend of durability, reliability and
comfort, plus a bit of fun for the roundabouts. I'm also hoping that these
mid-range models will give reasonable fuel efficiency but can't find fuel
consumption figures to confirm either way.
Can anyone tell me real figures at sensible motorway cruising speeds for
these models, either as manuals or automatics?
Also, have any of the mags published a proper buying guide to these
models? Failing that, any advice on things to look for (beyond the obvious
rust, crash damage and service history) would be appreciated, particularly
potential big bills around 100-150k miles.
Don't ask much, do I?



Replies:
Posted By: jamie (e39)528i
Date Posted: 17-May-2005 at 15:37

Originally posted by Commuter Commuter wrote:

Help!
I'm thinking of buying an E34 for my daily 80-mile commute. I'm thinking
that a 525 or 530 will have the right blend of durability, reliability and
comfort, plus a bit of fun for the roundabouts. I'm also hoping that these
mid-range models will give reasonable fuel efficiency but can't find fuel
consumption figures to confirm either way.
Can anyone tell me real figures at sensible motorway cruising speeds for
these models, either as manuals or automatics?
Also, have any of the mags published a proper buying guide to these
models? Failing that, any advice on things to look for (beyond the obvious
rust, crash damage and service history) would be appreciated, particularly
potential big bills around 100-150k miles.
Don't ask much, do I?

Hi commuter welcome to the forum! 

I had a e34 525i 24v model auto that returned around 30mpg on the motorway aslong as i kept it around 70mph.My e34 was a great car and i enjoyed driving it daily,i believe that the 525i tha i had is the best allrounder i am sure that others will agree in that it gives the best comprimise between performance running cost's and value for money.

The e34 is a bit of a bargain now as a good example with around 100k on the clock can be picked up for as little as £2000.

I think the main thing to look out for on the e34 is the suspension components as the e34 is a VERY heavy car and eats front bushes etc.... so test these thoroughly!!!

Check out the back issues of http://www.BMWCARmagazine.com - www.BMWCARmagazine.com  as they ran a buying guide for the e34 late last year.

The 530 is available as a 6 cylinder and a V8 post 1993(i think).

I am sure others will be along soon to prove me wrong!!!

 



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Posted By: Commuter
Date Posted: 17-May-2005 at 15:58
Thanks for the quick reply Jamie.
How will I check for worn bushes – vague handling, noises, anything else?
Is replacement a difficult DIY job and if so, is this an expensive job from a
non-franchised specialist?
Cheers


Posted By: jamie (e39)528i
Date Posted: 17-May-2005 at 16:14

Hi commuter check all bushes on the front these will clonk over bumps and also rear axle bushes which will clonk when changing gear, difficult to check on an auto though!!

Maybe find a local specialist near you to check the car over for you most will do this for a moderate charge normally an hours labour as they will be able to check all the parts that i have listed and give you an idea on what it will cost to replace.

Euro car parts are good for parts and service items if you want to do the bits yourself.

Check out http://www.bmw5.co.uk - www.bmw5.co.uk for a lot of info on the e34.



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Posted By: e34-520iSE
Date Posted: 17-May-2005 at 17:29
Hi Commuter! As Jamie says, check the suspension
over - especially the front end. Steering shake,
tramlining, braking shudder, knocking & clonking
sounds, all indicate bush and/or steering box wear.
Also have a look at the rear subframe mounts,
wedge something between the chassis box section
and the subframe and try to "wiggle" the subframe -
any movement there and it's time to replace those -
not easy!! As far as fuel economy goes, around town
they are poor (especially if not ran long enough to
warm up), but at a steady 70-80mph cruise you
should see 30mpg as long as you don't hit steep
inclines etc. If you do see an E34, come back and
post your findings etc.

Cheers,

Shaun


-------------
Self confessed madman
1990 Brilliantrot 2 ltr M20.

Air force definition of explosives: A loud noise followed by the sudden going away of what was once there a second ago.





Posted By: eta.
Date Posted: 18-May-2005 at 02:29
The 525i changed to 24v around '91/'92. I don't know the respective MPG, but was told by a BMW technician that the 24v is a superb engine. Having said that, the 518i (manual only available) is surprisingly quick and quiet. Torquey engine, knew a chap that towed a powerboat all over the country and said it was a fantastic towing car! It uses the cambelt m40 engine, so ensure cambelt and tensioner have been changed. I think the 525i has a cambelt too.


Posted By: BMWE34sport
Date Posted: 18-May-2005 at 10:35

I have a 525i 24v and on a sensible motorway run at about 80 i can get 30miles to the gallon , around town if i have a light right foot i can squeeze 20-22mpg but im usually in the high teens

If you are going to get a 525 i'd reccomend to try and get a 91 model with the 24v engine and if you can find a nice one try and get the sport model , it comes with the Mtech kit and suspension and a LSD , and is a tad lower than a standard 5 , thats what I have and I love it



-------------
1991 525 Sport


Posted By: eta.
Date Posted: 18-May-2005 at 11:48
Mmmmmm, my 735 returns that sort of MPG.


Posted By: jamie (e39)528i
Date Posted: 18-May-2005 at 16:27

Originally posted by eta. eta. wrote:

The 525i changed to 24v around '91/'92. I don't know the respective MPG, but was told by a BMW technician that the 24v is a superb engine. Having said that, the 518i (manual only available) is surprisingly quick and quiet. Torquey engine, knew a chap that towed a powerboat all over the country and said it was a fantastic towing car! It uses the cambelt m40 engine, so ensure cambelt and tensioner have been changed. I think the 525i has a cambelt too.

The later 24v 525i was chain driven and is a strong engine provided it has had regular oil changes.

I personally would dismiss a 518i as they are seriously underpowered as the e34 is a heavy car and you need the extra grunt of the six to push the car along.

The 24v 525i is the best of the bunch especially with the vanos like mine had as it has a lot more torque and improves MPG aswell.

Just my opinion not neccesarily correct



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Posted By: bm24v
Date Posted: 19-May-2005 at 06:02
What year did the Vanos come in?

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Posted By: e34m5
Date Posted: 19-May-2005 at 06:47
Originally posted by bm24v bm24v wrote:

What year did the Vanos come in?


The M50TU (Vanos) engine was introduced at the beginning of 1993. Most people seem to think that the earlier non vanos M50 engines are better due to "hotter" (american term) cams.

-------------

1991 525i Sport Manual

http://forum.bmw5.co.uk/index.php?showtopic=3552&st=0">


Posted By: brybusa
Date Posted: 19-May-2005 at 07:35
Still wouldnt want to fork out the fuel bills for 400-500miles per week on either!


Posted By: Commuter
Date Posted: 19-May-2005 at 10:23
The consensus seems to be heading for 30mpg for the motorway cruise. I
can live with that, even with 400 miles a week. The cost is worth it to
preserve my sanity – life's too short to spend it rattling up and down the
A1 in an inferior car.
I'm planning to view a 525 manual at the weekend, if it hasn't sold by
then.


Posted By: jamie (e39)528i
Date Posted: 19-May-2005 at 10:26
Good luck commuter let us know how you get on!

-------------


Posted By: eta.
Date Posted: 19-May-2005 at 15:20
Commuter! One factor you did not mention is passive safety and the e34 excels. Crash tests revealed safer than similar cars including Volvo. You do not want to see what happened to the Honda!


Posted By: bm24v
Date Posted: 19-May-2005 at 17:20

Originally posted by e34m5 e34m5 wrote:

Originally posted by bm24v bm24v wrote:

What year did the Vanos come in?


The M50TU (Vanos) engine was introduced at the beginning of 1993. Most people seem to think that the earlier non vanos M50 engines are better due to "hotter" (american term) cams.

So mine being a K reg (dont know when it was registered though) will have this vanos then.

Looking at the engine how (if any visible way) can you tell.



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Posted By: e34m5
Date Posted: 19-May-2005 at 18:39
Originally posted by bm24v bm24v wrote:

Originally posted by e34m5 e34m5 wrote:

Originally posted by bm24v bm24v wrote:

What year did the Vanos come in?
The M50TU (Vanos) engine was introduced at the beginning of 1993. Most people seem to think that the earlier non vanos M50 engines are better due to "hotter" (american term) cams.


So mine being a K reg (dont know when it was registered though) will have this vanos then.


Looking at the engine how (if any visible way) can you tell.



The VANOS engines have an extra lump on the front :

This is a non-vanos M50 :



and this is a M50TU with vanos :



HTH

Miles

-------------

1991 525i Sport Manual

http://forum.bmw5.co.uk/index.php?showtopic=3552&st=0">


Posted By: Nigel
Date Posted: 19-May-2005 at 19:01

I would have thought the biggest problems with these cars is the heads.

I'm afraid they are prone to cracking, mileage doesnt seem to be a factor, correct coolant does.

I also prefer the M20 12 valve engine, although I have chipped mine to match the BHP of the 24v.

A very good 12v example should be around £1000 ish, a shed for as little as £100



-------------
Best Wishes

Nigel



Posted By: eta.
Date Posted: 20-May-2005 at 08:09
"

I personally would dismiss a 518i as they are seriously underpowered as the e34 is a heavy car and you need the extra grunt of the six to push the car along.

"

I disagree, the 518i M40 engine is torquey and is so quiet. I drove one when new and had to open the bonnet to check the engine was running - it was!

As a commuter car, I would have thought this would give best fuel economy and low ins combined with comfort and passive safety.


Posted By: brybusa
Date Posted: 20-May-2005 at 10:23

Originally posted by Nigel Nigel wrote:

although I have chipped mine to match the BHP of the 24v.

from 170BHP to 190 and a bit Nigel?

 



Posted By: e34m5
Date Posted: 20-May-2005 at 10:50
Originally posted by brybusa brybusa wrote:

Originally posted by Nigel Nigel wrote:

although I have chipped mine to match the BHP of the 24v.


from 170BHP to 190 and a bit Nigel?




And mine is chipped aswell ..Should be around 200ish

-------------

1991 525i Sport Manual

http://forum.bmw5.co.uk/index.php?showtopic=3552&st=0">


Posted By: Commuter
Date Posted: 24-May-2005 at 13:57
Never got to see the 525 at the weekend – sold by the time I called so it
must have been a good one. The search continues.


Posted By: Bryce
Date Posted: 24-May-2005 at 17:58

Hi,

My 525i estate (M50) returns 24mpg around town and about 32 if I stick to 70ish, much above 80mph returns about 27mpg.

I have a fairly heavy foot and have to make up for the fact that I haven't MOT'd the bike yet this year! 

Hope this helps.

Bryce.

 



-------------
Bryce,
Volvo FL614/Saxon (1996)(HFRS).
BMW 525i SE touring (1992)
Kawasaki ZX6R F1 (1995)


Posted By: Savo
Date Posted: 27-May-2005 at 03:39

I had been considering changing my chipped 525i sport for a Land Rover because I tow a caravan regularly and had been swatting up on various models etc.  Then I was out driving when I thought about what it would be like loosing the BM.   .  I LOVE driving it, the engine sounds beautiful (when its not ticking) and I think the economy's not bad.  I get 28mpg on average with a heavy foot and I only drive less than 10 Min's to work, so the engine hardly gets warmed up. 

Andrew



-------------



1992 525I Sport, Bilstein Sport Suspension. Viper 2 Chip


Posted By: 530iTouring
Date Posted: 27-May-2005 at 04:35

Commuter,

My experience having owned a '95 530 V8 touring since Jan 2005.....

Research your car in a big way and get as much advice to guide you in the right direction, there are tons of E34 BMW sources of info as well as BMW GB (but none as good!). Drove a 518 and struck off my list, lets face it the 5 is a BIG car propelled by a 1.8 engine ??!! Also a K reg 530 touring with the full complement of extras. BMW history + ext warranty until its sale - new head fitted when reqd +  engine bay you could eat your dinner off! Interior and body was a dog  with severe signs of wear, no rust but seats (leather) trashed, fittings broken, back end showed its was used extensively 4 towing - scratched and damaged body. Drove like a gem! Also 525 x 3 in various states of reapir but generally above average (best 4 value & econ), but didnt really grab me need time to find a good 'un. Seller's well aware of this & crank price up. I have leaned toward chain driven cams - more durable (bomb proof if heavy !). Personally economy from my on board shows 22-23mpg regularly. I have had nearly 400 miles on a steady high-ish speed motorway run, at worst a shade over 300 (loadsa local driving).

Well pleased with my 530 it sounds & goes great. Other experiences being certain parts are ONLY avail fom BMW or MUST be BMW ie. coolant. Recent prob (WAT) aux water pump was a pretty simple fix (BMW part only) + hoses & (BMW) coolant a shade under £100. 

Above all else what seals it for me is the BMW ride.....its 100% desgned for the driver.Once driven never forgotten.

Good luck on your search...Tony



-------------
1995 E34 530 Touring


Posted By: 530kev
Date Posted: 06-June-2005 at 15:56
good evening i've just joined the site. i have an 94 530i v8 and the fuel consumption is terrible. fantastic car though- average 22mpg on short runs and max of 30 on motorways. Sounds and goes well though. enjoy but better if you own an oil company.


Posted By: fingerman
Date Posted: 06-June-2005 at 16:26
I have the a 95 525 auto and bought it for the reason of putting plenty of miles in it. I do about 30-40 miles a year up and down the country.

Paid a little bit over the odds, but got it from a BM specialist close to where I live.

I've only had it a month, but figured out that I get about 32-34mpg with plenty of motorway and 23-25 around town.

I used to have an e39 523 which was nice, but I actually prefer the e34. It feels a lot more solid and well built. The sound of the engine when I switch the auto box to sport is Great!





-------------
Current: E34 1996 525tds 113-125k
Previous: 9xE34s, 5xE30s, 2xE39s, 1xE32, 1xE36.... phew!
My Ebay bits: http://search.ebay.co.uk/_W0QQsassZseany69ukQQhtZ-1


Posted By: 530iTouring
Date Posted: 07-June-2005 at 04:55

530kev, I agree its thirsty but look at the options - a clean well looked after E34 is affordable, what else can you get in the 2nd hand world that compares on price and ride ? My own experience of the 3 5 & 7's I have driven is different but similar...that unmistakable BMW ride.

What a car !!!



-------------
1995 E34 530 Touring


Posted By: Peter Fenwick
Date Posted: 07-June-2005 at 05:17
I I was doing an 80 mile commute on a daily basis I would go for a 525TDS. OK so oil burners aren't as much fun as petrol but you could afford a nice holiday with the cash you will save on fuel. 

-------------
Entering an age of Austerity and now driving a Focus Diesel.


Posted By: Commuter
Date Posted: 07-June-2005 at 05:39
Bought one!
Found a cracking 525i manual.
I'll tell you more about it once I've collected it.
Thanks to everyone for their advice.


Posted By: Commuter
Date Posted: 14-June-2005 at 14:55
Bought one!

Picked up my 1995 525i SE on Saturday. It's an Oxford Green manual with
leather and air con. 82,000 miles and full service history.
It's in amazing condition for a ten year old car and drives superbly.
Did my first commute today and relished the calm cabin, a chassis that
loves roundabouts and an engine that spins like a turbine.
Only worry is that it has metric wheels which I gather makes finding tyres
a hassle – any thoughts?
Thanks for your advice out there.
Would attach pix to this post but haven't worked out how. Not that you
guys don't know what a green 5 Series looks like.


Posted By: Peter Fenwick
Date Posted: 14-June-2005 at 15:07

Commuter,

Sounds like a nice car. Manual low milage 525s with full history are  quite rare these days.

Metric tyres will be a real hassle. I would spend a bit and buy some other alloys for standard tyres. Metric tyres are very expensive.



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Entering an age of Austerity and now driving a Focus Diesel.


Posted By: Savo
Date Posted: 14-June-2005 at 15:17

Congrats on the new car, replacement alloys are dirt cheap if you go for the std 15" off Ebay etc.  Though If I had the money right now i'd got for a nice set of 18's...

Andrew



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1992 525I Sport, Bilstein Sport Suspension. Viper 2 Chip


Posted By: 530iTouring
Date Posted: 14-June-2005 at 15:44

Nice one m8

You do realise that's it now....everything you drive will be compared to the BMW ride....close but never better

Enjoy !!! 



-------------
1995 E34 530 Touring


Posted By: 530kev
Date Posted: 16-June-2005 at 14:45
to commuter,
have a set of 15" bmw wheels with good 225/60/15 tyres- yours for £80 but would need collecting from N Ireland. I changed to Alpina reps look sooooo cool.


Posted By: Commuter
Date Posted: 27-June-2005 at 08:42
Thanks for the offer Kev but if I go for replacement wheels I'll try to find
some a bit closer to home.
Before I go the replacement wheels route I want to find out just how
expensive/difficult it is to source metric tyres.


Posted By: UKDaveJ
Date Posted: 27-June-2005 at 14:35
I'm responding to the earlier part of this topic, namely fuel consumption.

As we're just one our first tank of fuel since buying the 520i SE manual, we're interested to see what she does on a tank.

Anyone know the official figs for the E34 520i, manual?

Commuter, our E34 has 16" E39 M5 replica alloys - didn't know when we bought the car, just knew I hadn't seen them before, but had if you get my drift!

I've got my two 635's off metrics (tyres horrifically expensive & OUTDATED technology, lethal in the wet IMHO) & onto 17"s, cross-spokes for the Highline, Alpina reps for the chrome bumper 635.
Am tempted to try the 635 alloys on the E34, if nothing else to see how it will look!

Looking forward to seeing your pics.
Dave




-------------
My 635's.


Posted By: shapetoshoot
Date Posted: 27-June-2005 at 20:39

Most of the replies seem to be advocating a 525 and you will probably here that elsewhere as well. If you are feeling confident dont dismiss the 530/540 v8 their reputation was  tarnished by an engine wear problem that will now have pretty much been resolved on any that are still running. A call to bmw customer service is all it takes to find out if the car was affected or has had remidial work done.

These cars where the higher model when new and are generally better specced. My own 94 530 did 700 miles last weekend with obc showing 32mpg av 65mph, but this 80% 85mph 20% 20mph. It does about 19mpg on my daily commute.

They are heavier on front bushes but the car feels compact to drive and is a pleasure to work on. At 180,000 mine has not let me down in 2 years daily use.

All this of course is secondary to the sound of the V8 at 6000rpm and 218bhp , which never fails to make a bad day good.

Best to just budget for spending £500 on bushes, whatever model you go for.

 

Sorry missed the latter part of your thread , sounds like a nice car and the mileage is a bonus.



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row row row your boat gently down the stream ,merrily merrily merrily life is but a dream.


Posted By: shapetoshoot
Date Posted: 27-June-2005 at 20:49

Metric are generally to order, expensive and not very good.

I'd recommend 16" with 225/55/16.

They will look better than 15", but not gary boy'd. Plenty of style options.

I have never heard of anyone keeping the metrics.



-------------
row row row your boat gently down the stream ,merrily merrily merrily life is but a dream.


Posted By: brybusa
Date Posted: 28-June-2005 at 04:04

Ummmm.I have a metric confession...

Ive kept the ones on my car......I love the look of the wheels...

http://67.18.37.16/1402/84/upload/p6978040.jpg - http://67.18.37.16/1402/84/upload/p6978040.jpg

ive managed to find one replacement tyre, if anyone else wants to get rid of their 240/45VR415 please give me a shout

 



Posted By: b8alk
Date Posted: 28-June-2005 at 04:32

Originally posted by Commuter Commuter wrote:

Thanks for the offer Kev but if I go for replacement wheels I'll try to find
some a bit closer to home.
Before I go the replacement wheels route I want to find out just how
expensive/difficult it is to source metric tyres.

Metric tyres are very old hat in terms of technology, not to mention lots of road noise and as someone as said poor in the wet,in short you will be paying a lot of money for very nasty tyres, the wheels that brybusa is showing you are very nice looking,although i dout yours will have these on, but these can also be found in 16"s 15"s and 17"split rim  (latic / x spoke)

I may well have a set of  G,bmw 16" latic wheels for sale in very good condition (just wheels) shortly, im not pushing a sale here as i will put them in stores for winter use ,but keep an open mind  95%ish of all owners that have had metric have got rid for the reasons above cost of replacement/nasty tyres.

 



-------------
E34 M30 535i SPORT



                                


Posted By: UKDaveJ
Date Posted: 28-June-2005 at 08:10
Get a nice set of style5's in 17", they look great on a 5 of any age.
I've got a set of these on my Highline 635 & they look fantastic IMHO, on the other 635 I've got 17" Alpina reps.


http://forum.bmw5.co.uk/index.php?act=Attach&type=post &id=519


-------------
My 635's.



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