High Fuel Consumption?

[kimbo23]

Ok guys, I serviced my car and full tanked it. I now will see how long it lasts. One thing to note is after full tanking my car (and not driving at all) the range said 325 miles. I am thinking now thats the rough figure I will be getting.

[Thermal]

... 325 miles. I am thinking now thats the rough figure I will be getting.

Yes, and so does the computer, which is what it "learned" from previous brim-to-brim experience. ;)

It doesn't know that you serviced the car, cleaned the EGR and MAF, replaced its glow plugs air- and fuel filter, etc. etc.

The range counter needs to be reset, so that the computer starts re-learning its new configuration.

It's in the model's owners guide how to do that.

[kimbo23]

... 325 miles. I am thinking now thats the rough figure I will be getting.

Yes, and so does the computer, which is what it "learned" from previous brim-to-brim experience. ;)

It doesn't know that you serviced the car, cleaned the EGR and MAF, replaced its glow plugs air- and fuel filter, etc. etc.

The range counter needs to be reset, so that the computer starts re-learning its new configuration.

It's in the model's owners guide how to do that.

That makes sense Thermal. I cant seem to find the owners manual at the moment. Ill have a good look around after I finish work. Unless its a quick procedure and you can tell me?

Thanks

[t-spiritpete]

... 325 miles. I am thinking now thats the rough figure I will be getting.

Yes, and so does the computer, which is what it "learned" from previous brim-to-brim experience. ;)

It doesn't know that you serviced the car, cleaned the EGR and MAF, replaced its glow plugs air- and fuel filter, etc. etc.

The range counter needs to be reset, so that the computer starts re-learning its new configuration.

It's in the model's owners guide how to do that.

That makes sense Thermal. I cant seem to find the owners manual at the moment. Ill have a good look around after I finish work. Unless its a quick procedure and you can tell me?

Thanks

Hi Kimbo23, it is very simple to do it with the buttons on the steering wheel, scroll through with the button and read the dashboard display, when you get to what you want just hold the button in for a couple of seconds to reset the overall mpg and the momentary mpg etc etc. I haven't read all the stuff about this thread but have you disconnected the Battery to reset the ecu.

Regards Pete.

[theoilburner]

Ok guys, I serviced my car and full tanked it. I now will see how long it lasts. One thing to note is after full tanking my car (and not driving at all) the range said 325 miles. I am thinking now thats the rough figure I will be getting.

Yes and how many litres did you put in for that 325 miles? Tell us that and I can tell you your fuel economy. I'm sorry, but miles per tank is meaningless. What you call a tank-full could be 100 miles less than my tank-full.

e.g. if you put in say 60 litres (for example, a genuine tankful) for 325 miles: (325 / 60) * 4.546 = 24mpg (roughly) - not so good. But if you got only 45 litres in (about when the gauge says empty) then it would be: (325 / 45) * 4.546 = 33mpg roughly.

The first would be bad news, the second probably OK, especially if you drive mostly in urban conditions.

My T25 1.8 VVTi is showing 36.5 mpg with a combination of longer runs and many short journeys in the cold.

[B3rtie]

Hi all,

I have recently bought a 2003 Toyota Avensis T3-X (2.0 litre). I full tanked the car and I basically do 90% motorway driving. However I think the car has an increaed fuel consumption. I am getting around 300 miles for a full tank of petrol (brim to brim). This is unusually low for me as I used to own a 2.0 petrol VW Passat and I easily got over 400 miles from that.

Any advice guys? Im quite worried.

Thanks

It the tank empty when you fill up and is the tank the same size as the Passat?

In my experience the computer in the car isnt that accurate often when mine says 0 miles remaining there is at least 5 - 10 Litres left in it or about 30-60 miles.

- Sorry just read rest of posts which say similar thing, Doh!

[kimbo23]

I usually fill up when the fuel light has been on for around 10-15 miles. And the passat tank was 60 litres. i think the avensis is around 60-62??

[theoilburner]

I usually fill up when the fuel light has been on for around 10-15 miles. And the passat tank was 60 litres. i think the avensis is around 60-62??

In which case you've probably only put in approximately 40-45 litres. So for your 325 miles you're averaging between 33 to 37 mpg. I'm think I'm repeating myself here, but the crucial point is this: the Avensis fuel tank may be 60 litres, but the fuel light comes on when only 40 litres or so have been used! So you're filling up with around 15-20 litres left in the tank.

I don't think there's anything wrong there at all. That's sounds similar to the figures you can get with the 1.8, so yours being a 2.0, you have no problems at all.

[kimbo23]

ok after a full service and changing pads and discs (which might not be relevant)

i full tanked my car and drove 323.5 miles on 51.7 litres

means 28.45mpg if I am correct??

How does that sound fellas? Still seems low to me

[theoilburner]

ok after a full service and changing pads and discs (which might not be relevant)

i full tanked my car and drove 323.5 miles on 51.7 litres

means 28.45mpg if I am correct??

How does that sound fellas? Still seems low to me

It depends what kind of driving you're doing. On my 1.8, the last tank was 30.6 mpg:

http://www.fuelly.com/driver/theoilburner/avensis

That's mostly because I've been doing short journeys and the weather has been so bad.

So, unless you're spending all day on the motorway, I'd say your figures look fine.

[Visitorx]

hi kimbo23 i wonder if you still have this car and if yes how are you getting along now..? did you solved your mystery of low mpgs or still the same? asking coz i have recently bought avensis 04 plate t4 auto and its a petrol hungry beast.... after a full fuel topup my range give 260miles duh ??? thats even worse than yours had it full serviced tried redex additive but i think i am really troubled by extremely low mpgs theres something wrong and i want to improve it..

is it possible that injectors or anything else needs replacement?? i havent tried resetting the ecu as i dont know where to look for the fuses....

heres a reference to my fuelly record http://www.fuelly.com/driver/visitorx/avensis

please anyone guide thanks

[Adam C]

One thing I noticed here; no one mentioned checking tyre pressures. Surely having the tyre pressures checked regularly will make a difference? For my Yaris I make it mandatory to keep the pressures anywhere between the two figures the manual states and my fuel consumption is good. Will help on the motorways.

kimbo23, was your Passat an automatic too?

I thought the 2.0 Avensis would have goodish economy as I'm sure I've read that it has direct fuel injection? I'm pretty much guessing that the Passat does too

[Visitorx]

adam you cannot compare Apple and oranges lolz :) yaris being a small car and having 1.3 engine whereas avensis is a large heavy family car to top it off having a 2.0 engine petrol however yes agreed tyre pressure makes a big difference :) i m eager to hear kimbos experience but i guess he is not interested in this thread anymore must have sold the avensis maybe !!

[frankie406]

i would like to hear about the ecu reset im driving a 2006 2.0d4d and gettin between 37-42mpg which is really poor for a diesel my 406 2.0hdi 2003 is givin me 58-62mpg..the old 1.6 corolla i had gave me 45mpg.i wonder if the ecu is updated/reset will it help with fuel/air ratio?

[Uncle Buck]

i would like to hear about the ecu reset im driving a 2006 2.0d4d and gettin between 37-42mpg which is really poor for a diesel my 406 2.0hdi 2003 is givin me 58-62mpg..the old 1.6 corolla i had gave me 45mpg.i wonder if the ecu is updated/reset will it help with fuel/air ratio?

It seems to me after all I've read about the D4-D engines, that the DPF is mostly to blame as it gets clogged up all too easily. But if an ECU reset works, then I'm willing to try it. Personally I think the 42 MPG average I'm getting from the 2.2 D4-D is very poor, especially when a 5 year old Audi 130 Tdi engine was getting 51 MPG average with the same kind of driving.

[frankie406]

i would like to hear about the ecu reset im driving a 2006 2.0d4d and gettin between 37-42mpg which is really poor for a diesel my 406 2.0hdi 2003 is givin me 58-62mpg..the old 1.6 corolla i had gave me 45mpg.i wonder if the ecu is updated/reset will it help with fuel/air ratio?

It seems to me after all I've read about the D4-D engines, that the DPF is mostly to blame as it gets clogged up all too easily. But if an ECU reset works, then I'm willing to try it. Personally I think the 42 MPG average I'm getting from the 2.2 D4-D is very poor, especially when a 5 year old Audi 130 Tdi engine was getting 51 MPG average with the same kind of driving.

how do you clean out dpf? is there 1 on the 2.0D4D engine? i know that in the peugeot you have to use some kind of additive and drive at 60-70mph at high revs to regen it??