MK5 Golf GTI

All Things Mk5 => Mk5 General Area => Topic started by: timmyed30 on January 16, 2012, 08:18:52 pm

Title: Mpg advice help (sorry) mines rubbish
Post by: timmyed30 on January 16, 2012, 08:18:52 pm
Sorry guys I no there has been 100s before but I'm  :confused:about mine I average about 26mpg day to day but I made a trip from Sommerset to essex didn't go above 80mph cruise control 65/70.  Road works down to 50 for milesssssss at 4am so no traffic jams and all I got was 35mpg
Why is that right or is sumthing up!
Ed30 standard!!!!
Title: Re: Mpg advice help (sorry) mines rubbish
Post by: Beddie on January 16, 2012, 08:24:08 pm
I'd say thats about average for that kind of journey at this time of year with cold temps etc  :happy2:
Title: Re: Mpg advice help (sorry) mines rubbish
Post by: ub7rm on January 16, 2012, 08:39:49 pm
Sounds about right to me too.  Presume the 26mpg driving is in city / traffic type situations?
Title: Re: Mpg advice help (sorry) mines rubbish
Post by: timmyed30 on January 16, 2012, 08:42:29 pm
Yea the 26mpgg I'm happy with but 35 for a 260 mile trip :/ I'm sure I've herd people get 40+
Title: Re: Mpg advice help (sorry) mines rubbish
Post by: Beddie on January 16, 2012, 08:46:16 pm
Yea the 26mpgg I'm happy with but 35 for a 260 mile trip :/ I'm sure I've herd people get 40+

I've done 56K in my ED30 and never seen anywhere near 40+ as a trip average, you might see it when coasting and on a light foot for a few miles but thats about it..
Title: Re: Mpg advice help (sorry) mines rubbish
Post by: markymark on January 16, 2012, 08:46:36 pm
As above have said, it's about right given the journey and the cold temps outside.
Title: Re: Mpg advice help (sorry) mines rubbish
Post by: stealthwolf on January 16, 2012, 08:48:23 pm
Yup that's about right. If you want better mpg, drive slower eg 60mph or buy a diesel.
Title: Re: Mpg advice help (sorry) mines rubbish
Post by: timmyed30 on January 16, 2012, 08:48:57 pm
That's all ok then thanks guys thought I'd double cheak
Title: Re: Mpg advice help (sorry) mines rubbish
Post by: ub7rm on January 17, 2012, 01:03:39 pm
I've seen over 41 mpg but in very 'specialised' conditions i.e the engine was still warmish from when it was last run but enough time had elapsed that the trip computer was reset, then it was straighnt onto a rural A road at a steady 45-50 mph for an hour or so without any harsh acceleration or braking.  It was mostly downhill too come to think of it...There was a convoy of cars ahead of me and no opportunity to overtake all of them so I just took it easy.

Do-able but not everyday and the conditions have to be right. 

My commute is 30 miles a day on a rural A road, cruise 50-60 mph with the occasional overtake and my long term average is about 34 mpg.
Title: Re: Mpg advice help (sorry) mines rubbish
Post by: FamilyDub on January 18, 2012, 01:02:15 pm

I struggle to crack more than 33-35mpg over careful, 100+ mile journeys....  but then again, I am rather impatient and I do have a heavy right foot...  :evilgrin:

I always think government 'combined' figures are about 5-6mpg optimistic, so 35 for an ED30 seems ok to me.
Title: Re: Mpg advice help (sorry) mines rubbish
Post by: sub39h on January 18, 2012, 01:07:28 pm
i get less than that out of my K03 A3 2.0T. be happy lol
Title: Re: Mpg advice help (sorry) mines rubbish
Post by: Frodo-anni on January 18, 2012, 09:54:24 pm
Im still on first tank of eddie ownership, saw 32mpg over the 30miles home from the dealership. Having been to and forth from work over 3 days its reading an average of 23.5mpg over 210miles, with average speed of 24mph. I would hav ethoughts its traffic and the cold weather, heaters on full, seats on toasty  :signLOL:

Just something i will get used to  :P
Title: Re: Mpg advice help (sorry) mines rubbish
Post by: Ifti on January 18, 2012, 09:58:30 pm
Ive noticed that cruise control uses more fuel and increases mpg a little as well......
Title: Re: Mpg advice help (sorry) mines rubbish
Post by: vRS_Pagey on January 18, 2012, 11:03:30 pm
Ive noticed that cruise control uses more fuel and increases mpg a little as well......
????  :confused:

Out of interest, will mpg improve the higher the outside temperature?
Title: Re: Mpg advice help (sorry) mines rubbish
Post by: seiko on January 19, 2012, 08:45:46 am
Ive noticed that cruise control uses more fuel and increases mpg a little as well......
????  :confused:

Out of interest, will mpg improve the higher the outside temperature?

yes you wil see more mpg in the summer, as apposed to less mpg in the winter months
Title: Re: Mpg advice help (sorry) mines rubbish
Post by: E30Dom on January 19, 2012, 09:14:40 am
Also, ignore the computer... it's always out... Mine showed 32mpg last fill up, but worked out i was getting closer to 35mpg... :signLOL:
Title: Re: Mpg advice help (sorry) mines rubbish
Post by: vRS_Pagey on January 19, 2012, 10:38:36 am
So why does mpg improve in the summer?  I understand that when intake temps are low performance is improved, is that the reason.......?
Title: Re: Mpg advice help (sorry) mines rubbish
Post by: E30Dom on January 19, 2012, 10:54:56 am
Air is less dense, therefore uses less fuel to mix with it...
Title: Re: Mpg advice help (sorry) mines rubbish
Post by: sub39h on January 19, 2012, 11:05:31 am
So why does mpg improve in the summer?  I understand that when intake temps are low performance is improved, is that the reason.......?


If you look at it the other way, why do you get worse mpg in the winter?

Because if the air is denser you get more oxygen and hence better performance, meaning you need less throttle suggesting you'll get better fuel mileage in the winter but this isn't the case.

The reason is multifactorial. Mainly:

1. Longer time to get to operating temperature
2. Use of more electrical equipment: air con; heated rear screen; heated seats etc

Those are probably the biggest two factors.
Title: Re: Mpg advice help (sorry) mines rubbish
Post by: vRS_Pagey on January 19, 2012, 11:23:29 am
Thanks for clearing that up guys!  :happy2:
Title: Re: Mpg advice help (sorry) mines rubbish
Post by: ub7rm on January 19, 2012, 03:49:45 pm
Its all to do with the warm up IMO.  On a short winter journey the MPG is noticably less than the same in the summer but on a longer journey I haven't noticed much difference at all. 

Colder air makes for better (more efficient) combustion but as said the longer heat up time and extra load on the altenator takes away from that. effect.
Title: Re: Mpg advice help (sorry) mines rubbish
Post by: marcus on January 23, 2012, 08:23:56 pm
The best I've had on my 58 mile commute (M40/A34/M4) is 43.  This was driving to the speed limit and without using cruise in September, so mild weather.

I replaced the rears for 2 new Avons recently and I couldn't better 35 in colder weather  :sad1: