Efficient Dynamics

[Bavs108]

So I decided to do a little test yesterday. I reset my average fuel consumption and proceeded with my 60km commute back home from work. On the highway I had my cruise control set to 100km/h in 6th gear cruising in the slow lane.

This is the lowest I managed to achieve for a good few km's:

This was just after I took my off ramp:

This was my net average from work to home:

The off ramp is about 5km from home with a decent amount of traffic and all the robots that I got to were red:yuck:

This morning I didn't reset my consumption but when I got to work it was:

Now I think if it wasn't for the start up and warm up increase in consumption this morning it would've been a bit lower. It increased by about 0.5l by the time it warmed up.

My tank range is currently showing 830km:

I normally average around 700 off a tank 80% highway 20% town. Not too bad for a 6cylinder if you ask me:rollsmile:

 

[Dippies]

not to bad

 

[Divio]

Give me ur 6th Gear Plz!

:rollsmile:

 

[GoCart]

HAHA, same day!! nice one.

 

[Bavs108]

Give me ur 6th Gear Plz!

:rollsmile:

I have a spare 6speed gear knob if you want:rollsmile:

HAHA, same day!! nice one.

Lol yeah I noticed that too. I was gonna post this last night but my internet was too slow to upload pics:yuck:

I'm gonna reset my consumption when I leave work today and set my cruise control to 130 and see what the outcome will be:rollsmile:

 

[GoCart]

Cool!!

 

[Hellas]

Can you do the actual calc when you fill up again. I have found that my OBC reading differs about 20% to the actual calculation at the pump. The OBC gives a better result then actually achieved.

Had a flat 5l/100km the other day and it came out to 6l/100km (16,5km/l) at the pump. 2003 320d.

 

[Bavs108]

Can you do the actual calc when you fill up again. I have found that my OBC reading differs about 20% to the actual calculation at the pump. The OBC gives a better result then actually achieved.

Had a flat 5l/100km the other day and it came out to 6l/100km (16,5km/l) at the pump. 2003 320d.

I did the calculations some time back and the OBC was spot on. For my weekly commutes I get around 700 off a tank and normally fill around 60-63l with the OBC showing average consumption of between 9-9.5. This includes town driving in between.

 

[Zack]

That is not bad at all! :thumbs:

 

[Naruto]

That's awesome!

 

[Bavs108]

Here's my consumption with cruise control set to 130. Same route as yesterday:rollsmile:

 

[samman325]

:bravo:

can you reset your consumption figure without disconntecting the battery?

If so, how?

 

[Bavs108]

:bravo:

can you reset your consumption figure without disconntecting the battery?

If so, how?

Press and hold the BC button on the indicator stalk. No need to disconnect the battery.

 

[ajmalola]

How is that even possible?? I get about 450k's on a tank, 13.3l/100. BMW 325ci, well granted its an auto, but that can't explain it.

 

[Photokid]

How is that even possible?? I get about 450k's on a tank, 13.3l/100. BMW 325ci, well granted its an auto, but that can't explain it.

depends on the topography of your route.
13.3 is very high though. I get 10.8 mixed, spirited driving the 335.

 

[Bavs108]

How is that even possible?? I get about 450k's on a tank, 13.3l/100. BMW 325ci, well granted its an auto, but that can't explain it.

There are a lot of factors to take into account. The main ones IMO is your driving style (heavy vs light foot) and highway vs town driving. I got those figures with a very light foot and mostly highway driving. I could be mistaken, but the Ci may also be a bit heavier than the sedan. The fact that you have an Auto box also makes a difference. Also Coast vs. Altitude makes a difference. I'm at the coast which I find is a bit heavier than at altitude, but at altitude it comes at the expense of performance.

Just an update. I filled up yesterday. Got a bit carried away with the last quarter that was left in my tank and managed to get 715km with 70km tank range left when I filled up:rollsmile: If it wasn't for my heavy foot I think I could've gotten around 850 off my tank quite comfortably:rollsmile:

I only fill up with Engine Primax 95 Unleaded btw. I find I get slightly better consumption than when I was using BP.