XR5 Fuel Consumption Increase

Skid Marx · 31-03-2011, 11:01 PM

XR5 LV Focus now 9 months old. Only done 8500ks.

I was getting 10.8/100 up until a few months ago when it slowly increased to 11.3/100. Yes. I'm using the air con, but I was using it just as much back in December/January when I got the better figure. The tyre pressures are right. The traffic is about the same and I really didn't put THAT much weight on over Christmas!

Any ideas why the increase? I thought it was supposed to get better as the donk loosened up. I possibly started using a different petrol station at around the time it changed - but it changed over a period of about 6 weeks rather than within a tank or two if it was crap petrol. I'm using 95RON all the time.

Is this a sign of trouble?

**DJM83** · 31-03-2011, 11:41 PM

Its still within the limits though and really 11.3 isnt bad
That said my 5 has only ever been run on Ultimate and is tuned and it just jumped to 10.1
I dont think its a sign of trouble

Skid Marx · 01-04-2011, 12:31 AM

DJM83 - OK thanks for that. I was wondering if one of the sensors used to feedback to the engine management system might be out of wack, but I guess they'll pick that up when I get it serviced soon.

XR5-Boy · 11-04-2011, 07:06 PM

Mate I move from 10.8-11.1 regularly. Might be a case of right foot syndrome? ;)

Tj-zetec · 11-04-2011, 11:48 PM

Mine's been holding steady and 11.8 for the last few weeks. Sat at 12.5 for a while

And that was running on the stock tune too. I should check my air filter, make sure it's not full of bugs or something.

smee323 · 12-04-2011, 12:55 PM

Ours is running at about 10.3
Has 12000k on it.
The longer you let it stretch its legs, the better the fuel consumption.
Was into the 8's on a trip away.

XR5-Boy · 12-04-2011, 07:10 PM

Alright kids, I did an experiment to and from home. I drive in pretty heavy traffic and like I said above, I get 10.8-11.1 normally.

In the interests of pure knowledge, i decided to change my driving style a bit. I started by accelerating smoother and changing in between 2500-3000rpm. I also read ahead more and anticipated traffic flow.

It's a good 20km drive each way, so average consumption is pretty accurate (not like a short drive).

It was a more relaxed drive and felt great. Below is the result.

It's been a while since I've seen single figures! I reset the usage this morning before I left for work. It was at 11.1. reading was taken this evening when i got home.

big orse · 13-04-2011, 09:13 AM

That's excellent consumption considering my wife's 2010 lv mkii focus is always on 11.1l/100km. It is auto and she hammers it. We also live in a hilly area.

XR5-Boy · 13-04-2011, 11:55 AM

Quote:

Originally Posted by big orse

That's excellent consumption considering my wife's 2010 lv mkii focus is always on 11.1l/100km. It is auto and she hammers it. We also live in a hilly area.

Yeah i'm in a hilly area as well. It's down to 9.7 this morning. And that's with the odd squirt here and there. My car is also running a tune.