Advertisement
If you have a new account but are having problems posting or verifying your account, please email us on [email protected] for help. Thanks :)
Private profiles - please note that profiles marked as private will soon be public. This will facilitate moderation so mods can view users' warning histories. All of your posts across the site will appear on your profile page (including PI, RI). Groups posts will remain private except to users who have access to the same Groups as you. Thread here
Some important site news, please read here. Thanks!

Fuel consumption

  • 12-11-2021 11:59am
    #1
    Registered Users Posts: 48 Carol B
    Registered User


    Hi, Can anyone shed some light as to why my 1.4 2014 vauxhall astra is so sore on fuel, I've always had astra's & none were as sore on fuel as this one.



Comments

  • Moderators, Sports Moderators Posts: 43,513 Mod ✭✭✭✭ magicbastarder
    Moderator


    what sort of fuel comsumption are you seeing?



  • Registered Users Posts: 48 Carol B
    Registered User


    Hi, I'm putting 60e a week & I travel to work which is about 14 miles each way, I know fuel is through the roof but for a 1.4 petrol it seems alot & especially when it lacks power.



  • Moderators, Sports Moderators Posts: 43,513 Mod ✭✭✭✭ magicbastarder
    Moderator


    €60 is about 35l at current prices - and that usage (if it's only that usage) is 225km a week. or else, about 15l/100km. which is very high.



  • Registered Users Posts: 1,652 ✭✭✭ Miscreant
    Registered User


    So you you are getting around 34 litres of petrol for €60 these days (at 174.9c). From this, you drive 280 miles in the week (purely for work), giving you 8.1 miles or thereabouts per litre.... This works out as 37Mpg or 6.3litres/100km. It does not sound to be terribly off the mark to me for a 1.4 petrol in a reasonably heavy bodied car.

    What kind of traffic conditions are you encountering on your way to and from work? Traffic has got a lot worse lately so that might account for a rise in fuel consumption, coupled with it getting a little colder going into winter. A lot of factors contribute to fuel consumption so we would need to know all the variables. Also, about a month or 6 weeks ago, you would have been getting about a gallon more of petrol for your €60 as the price has shot up in a short time.



  • Moderators, Sports Moderators Posts: 43,513 Mod ✭✭✭✭ magicbastarder
    Moderator


    From this, you drive 280 miles in the week

    you've double counted the travel. 28 miles a day is not 280 miles a week.



  • Advertisement
  • Registered Users Posts: 5,377 ✭✭✭ kirving
    Registered User


    It's much easier to work in kilometers and litres, not € and weeks.

    14 miles e/w = 140[miles] = 225[km] = 2.25 [100km]

    60[€] / 1.70[€/l] = 35[l]

    35[l] / 2.25 [100km] = 15.7 [l/100km] / 18mpg

    It's high, but if you're doing that in stop/start city traffic it's not beyond the realms of possibility at all.



  • Registered Users Posts: 48 Carol B
    Registered User


    I travel 28 miles per day & the traffic is not bad until I am coming into the town but still not heavy like city travel, I thought then is it the model as she is low on power maybe more fuel is being consumed to try & get more power.



  • Registered Users Posts: 48 Carol B
    Registered User


    I'm old school miles & gallons & my bank works in €s not litres LOL, I'll keep digging thanks for your help.



  • Moderators, Sports Moderators Posts: 43,513 Mod ✭✭✭✭ magicbastarder
    Moderator


    does your car have any sort of trip computer or average fuel consumption display?



  • Posts: 0 ✭✭✭✭ Luciano Obedient Lifesaver
    Registered User


    Petrol I assume?

    I can only say in my limited experience of petrol and diesel that driving "style" seems to affect consumption more in a petrol. When I had a 1.8 diesel Ford It usually hovered around 8L/100km with mixed driving, could get it down around 6L/100km on long runs and if I had a week or two in the winter of short runs and letting the car warm up etc. it could nudge over 10L/100km.

    With the 1 litre petrol I have now with normal mixed driving I get roughly the same consumption as I got from the diesel. Higher consumption on motorway runs though. I tend to have a fairly light foot day-to-day. The major thing I've noticed though is that it only takes a little bit of driving like a dick or booting it for a couple of minutes and it absolutely drinks the petrol.

    If you're keeping it under 2k RPM and being conservative then I'd consider that kind of fuel usage very much on the high side. Otherwise it's on the upper end of normal I would have thought.



  • Advertisement
  • Moderators, Sports Moderators Posts: 43,513 Mod ✭✭✭✭ magicbastarder
    Moderator


    there's a saying that one of the biggest influences on your fuel consumption is your mood.



  • Registered Users Posts: 73,849 ✭✭✭✭ Atlantic Dawn
    Registered User


    X a week is no way to measure.

    Fill the tank with fuel, reset the trip computer, drive until the low fuel warning light comes on, then refill car and check how many km's were covered, this will give the fuel consumption in an accurate figure.

    Outside this, first thing I would check would be tyres are not poorly inflated and car has been recently serviced.



  • Registered Users Posts: 1,332 ✭✭✭ dePeatrick
    Registered User


    I’m driving about 24 miles a day mixed driving, getting 50 mpg now but that was 40 mpg until I changed my driving style. It’s a 1.4 Golf petrol.


    Just to add I did a Dipitane treatment around same time I changed driving style and I think that helped a lot too.



  • Registered Users Posts: 1,760 ✭✭✭ Buddy Bubs
    Registered User


    35 litres for 225kms is 15.5 litres per 100kms or 18.8 mpg but I'd wager you do more driving outside of your commute.

    I'd be expecting about 30mpg in mixed driving in an older astra (if it is older) which would get you 315kms for 35 litres. I know you work in miles so if you do an extra 50 to 60 miles in the week you are getting 30mpg. In which case, car is probably fine. Your 60 euro is only buying you the same amount of petrol 40 euro or so was buying a while back.



  • Registered Users Posts: 1,652 ✭✭✭ Miscreant
    Registered User


    Oops.... You are right so it is double the consumption I had calculated..... 18ish MPG is a scandal for a 1.4 petrol for sure if this is the true extent of the mileage in the car. There must be more travel than just work and back for the OP, otherwise the car is running incredibly rich and should stink of fuel while going down the road.

    For the OP: If it is only work mileage you are doing for the week, then you most definitely need to get the car checked out by a mechanic. That much fuel being pumped into the engine is not good and I would imagine a lot of it isn't being burned off completely, thereby potentially ruining the catalytic converter in the car as well. That would be a pretty big bill to sort!



  • Registered Users Posts: 75 ✭✭ JCN12
    Registered User


    OP - you can buy an ultra gauge that plugs into your OBD, if your car does not have the consumption delta.

    You'll see very quickly where you are using up the fuel. 🙂



  • Registered Users Posts: 75 ✭✭ JCN12
    Registered User


    Definitely agree with driving style. I'm getting about 50 mog out of Octavia 1.4 petrol (non turbo) now too.



Advertisement