Real World Milage

[SimonB]

Originally Posted by BMWDave

Whilst on the topic of fuel consumption, are you guys using premium or ultimate in your beasts? Thus far, i've only been feeding mine premium (shell).

Ultimate - Caltex, only on my first paid tank so far, will be filling up again tonight.

[aedeau]

Originally Posted by xa-coupe

As for Mr Diesel... if they made it in a coupe I would actually consider it !

i reckon in a couple of yrs they will, once they've sold enough petrol coupes and see there's a demand for it.

i don't think the hatch looks too bad with Msport kit; stock is pretty lame though

[Alext]

Depends on your driving style. Try 'rolling-on' the throttle rather than having a heavier foot and sharp inputs. With a manual try using the optimal shift points for fuel economy. Also try engaging neutral and coasting to a stop rather than using gear braking.

I should also say that if you can help it, try not to come to a complete stop as it takes more energy to move a stationary vehicle than one with a bit of forward momentum.

[123D-M]

Originally Posted by Alext

Also try engaging neutral and coasting to a stop rather than using gear braking.

This isn't correct actually. Keeping the car in gear and using the engine to brake uses zero fuel in modern cars. Observe your instantaneous fuel readout when you do it.

Engaging neutral and coasting means that the engine needs to use some fuel to keep it idling rather than using momentum to keep it turning over.

[CeeJay]

Originally Posted by xa-coupe

11.2 is pretty damned good. How did you find the transition from the BA to the Beemer? I really have only pottered around for 45 minutes in the 135 and loved it but really didn't get to try it out properly.

As for Mr Diesel... if they made it in a coupe I would actually consider it !

The Beemer is obviously more refined and much quicker off the mark but the XR8 felt like it had more top end.
Although, the way the 135 delivers the power so smoothly and rapidly may help create that impression compared to the V8.
Also test drove the 335 but felt that the XR8 had more urge.
Drove the XR8 again the other day as I'm yet to sell it and just confirmed how much better the 135 is in all areas except for the
rear seating.
Maybe you need to take the wife for a test drive as I can't seem to get the car off my wife on weekends......

[xa-coupe]

Originally Posted by CeeJay

The Beemer is obviously more refined and much quicker off the mark but the XR8 felt like it had more top end.
Although, the way the 135 delivers the power so smoothly and rapidly may help create that impression compared to the V8.
Also test drove the 335 but felt that the XR8 had more urge.
Drove the XR8 again the other day as I'm yet to sell it and just confirmed how much better the 135 is in all areas except for the
rear seating.
Maybe you need to take the wife for a test drive as I can't seem to get the car off my wife on weekends......

I felt pretty much the same just from the test drive so no real surprise there thankfully.
Mrs XA is all for the Beemer except for the cost. If I show it costs less to run it's another tick.
It's the tightwad in me that likes the idea of a diesel that performs okay :biggrin:

[TimMc]

Is economy a significant financial consideration when you're paying this much for a vehicle? I suppose constantly filling up the tiny 53lt tank is certainly a consideration as are CO2 emmissions.

[xa-coupe]

Originally Posted by TimMc

Is economy a significant financial consideration when you're paying this much for a vehicle? I suppose constantly filling up the tiny 53lt tank is certainly a consideration as are CO2 emmissions.

The economy is not a significant factor but it is a factor. When I took delivery of my XR8, petrol was less than a dollar a litre for 98... now it can get to near 1.80. That is a lot of difference and there is no reason to expect the raping to stop and that in another 4 years it'll be well over 2 bucks.
Having said that, I am not wanting to buy a Prius or anything else like that as I enjoy my driving too much. A diesel with a bit of poke would be an acceptable compromise but we don't get one here so it's only conjecture !

[TimMc]

Originally Posted by xa-coupe

A diesel with a bit of poke would be an acceptable compromise but we don't get one here so it's only conjecture !

Yeah, that 123D would be nice, particularly if diesel was priced a little better in Oz.
BTW my 2nd car was a 302 XA GS coupe with top loader. Noice.

[Yep 135]

it would be great if the 123D was avalable here, 2lt turbo diesel 150kw + chip = +20% more and more torque than the prime minister. that would be the best of both worlds, performance and fuel economy.

[Alext]

123D-M you are correct, I always believed the other way. On some cars below the overrun fuel cutout I get some pops and bangs so I assumed it was using fuel and running rich.

[xa-coupe]

Originally Posted by TimMc

BTW my 2nd car was a 302 XA GS coupe with top loader. Noice.

Nothing like over powered underbraked and ill handling cars .. they have character ! :headbang:

[ExMX5]

Originally Posted by 123D-M

This isn't correct actually. Keeping the car in gear and using the engine to brake uses zero fuel in modern cars. Observe your instantaneous fuel readout when you do it.

Engaging neutral and coasting means that the engine needs to use some fuel to keep it idling rather than using momentum to keep it turning over.

Careful with that - if you have an ordinary manifold fuel injected car I think it just doesn't spark the plugs...

Also I thought that fuel injection was necessary at all times to some degree to cool the engine?

[TimMc]

Originally Posted by ExMX5

Careful with that - if you have an ordinary manifold fuel injected car I think it just doesn't spark the plugs...

Also I thought that fuel injection was necessary at all times to some degree to cool the engine?

I know my 19 year old 325i cuts the fuel completely until the revs drop to idle level.

[SimonB]

Just came in from a run where I reset the trip computer when I filled up. The results (135i, manual transmission):

21 minutes
27 km
82.3 km/h average (dropped from 89 km/h due to traffic lights)
8.9 l/100km (went up from 8.7 l/100km due to same lights)

[amk2912]

I guess what bugs me about fuel consumption etc with the 135i is the same thing that bothered me with my 130i.

The fuel tank is too small!!! 53 litres only gets me between 400 and 450km. The reserve kicks in with 100km to go and becomes a pain in the bum at 50km to go. I have run to less than 0km to go and still put in only 51 litres.

If any aftermarket developers are reading this - if possible, please make a larger fuel tank . 70 litres would be nice!

[123D-M]

Originally Posted by amk2912

I guess what bugs me about fuel consumption etc with the 135i is the same thing that bothered me with my 130i.

The fuel tank is too small!!! 53 litres only gets me between 400 and 450km. The reserve kicks in with 100km to go and becomes a pain in the bum at 50km to go. I have run to less than 0km to go and still put in only 51 litres.

If any aftermarket developers are reading this - if possible, please make a larger fuel tank . 70 litres would be nice!

This even bugs me on the diesel! I get about 700 kms from a tank but why does the damn fuel warning have to bong so persistently from a quarter of a tank?! The first warning is when I still have over 100kms left and then from 50kms it becomes really annoying. I want a software upgrade to edit the warnings. One bong at 50kms and maybe a light is all that is needed.

[Jaymz]

Originally Posted by aedeau

6.3L/100 km - freeway and city driving on the way to work

830-860km per tank with 6000kms on the odo :biggrin:

woooo diesel

Hay me too:thumbup: but mine has roughly 150kw & 430nm's

[Wraith]

Just as a matter of interest, as I havn't read all the posts on this thread, how are you guys actually measuring your fuel consumption ???

If your only relying on the cars trip meter, it may not be accurate at all !

This topic has been discussed on other car type forums I'm a member of and most of those have had inaccurate trip readings, compared to measuring the consumption, based on how much fuel you put in at the bowzer and then taking the mileage readings and working it out based on that, rather than trip meter readings...

What I've found on my cars for eg: (all of them) is that the trip meter always shows a lower fuel usage rate than what the cars actually using...

I've done my comsumption usage trials with up to 5 tanks back to back and with the same quantity/type of fuel and similar driving style and routes :smile:

[aedeau]

Originally Posted by Jaymz

Hay me too:thumbup: but mine has roughly 150kw & 430nm's

Really? oooo... I'm suppose to be going to Willowbank sometime this month (drags), would love to see how a stock 120d compares with a chipped golf tdi. I'm thinking about getting a spider box, but need to benchmark first :wink:

[Sydneysider]

I have the steptronic and in Sydney traffic I am steady on 12.7L/ 100km. I have to fill up before 400km

[DTNJNQ]

I have had the car for 4 weeks and currently averaging 13.8 L/100km. Mainly city driving