Make a donation

Author Topic: Whats your winter mpg  (Read 4178 times)

Offline sub39h

  • Just look at my post count
  • ******
  • Thank You
  • -Given: 189
  • -Receive: 84
  • Posts: 1719
Re: Whats your winter mpg
« Reply #15 on: December 22, 2011, 12:09:53 pm »
Its more to do with the cold dense air... more air=more fuel= more power=less throttle less MPG

^hence why i never understood the above as an explanation
2006 Phantom Black A3 2.0T S-Line
DSG | Rear Parking Sensors | MFSW | BOSE | Auto lights/wipers | Half leather
MODS : '09 tail lights | TT vents | Bilstein B14 | RNS-E 2010 | AMI | AKS Tuning custom CAI | Titanium BBS VZs | NQS BBK | WALK | Autotech RARB | Bluemotion aero | Blueflame TBE | Autotech HPFP | MY11 Wing Mirrors | Bluetooth | S3 Intercooler
PLANS: Stage 2+

Offline swgti

  • Always Involved
  • ****
  • Thank You
  • -Given: 28
  • -Receive: 6
  • Posts: 440
  • GTI owners are born not manufactured!
Re: Whats your winter mpg
« Reply #16 on: December 22, 2011, 07:29:12 pm »
Mine only does a 8 mile windy trip most mornings to work and have noticed a drop from about 29 down to 27.
Laser Blue 3dr No 209683, Leather, Monza II's and a few other goodies...........GONE but not forgotten......now in an A4 S-Line Avant 170tdi......god I miss the Gti.

Offline Beddie

  • Just look at my post count
  • ******
  • Thank You
  • -Given: 25
  • -Receive: 76
  • Posts: 1303
    • Email
Re: Whats your winter mpg
« Reply #17 on: December 22, 2011, 07:48:34 pm »
Averaging 28 as usual through the winter compared to 32 in the warmer months which is to be expected really  :smiley:

Longer on cold start / rich running due to cold temps
Tyre pressures drop in the cold increasing rolling resistance
Extra frictional losses due to all the fluids, oils and greases in the car becoming less viscous
Increased electrical load (heated seats, rear screen, lights etc) increasing the mpg
More aerodynamic drag on the car due to the increased density of the colder air

Winter sucks but cold dense air is officially turbocharger approved...  :signLOL:
« Last Edit: December 22, 2011, 07:50:22 pm by Beddie »


Tornado Red ED30 : Number 1644 - Gone

Carbon Grey Edition 35 - Here

Offline JoeDarKa

  • Just look at my post count
  • ******
  • Thank You
  • -Given: 57
  • -Receive: 73
  • Posts: 3188
Re: Whats your winter mpg
« Reply #18 on: December 22, 2011, 09:16:59 pm »
I hit 72 mpg on the way to work today  :laugh:  :jumpmove:

Thats a derv for you!


GT Sport - Reflex Silver 2.0 TDI My Build

Offline alackofspeed

  • Always Involved
  • ****
  • Thank You
  • -Given: 6
  • -Receive: 24
  • Posts: 414
    • Email
Re: Whats your winter mpg
« Reply #19 on: December 22, 2011, 11:32:30 pm »
Its more to do with the cold dense air... more air=more fuel= more power=less throttle less MPG

^hence why i never understood the above as an explanation

As I understand it, low temp fuel consumption is typically higher due to prolonged warm-up increasing the duration of cold temp enrichment, combined with poorer part throttle fuel atomisation when at normal water / oil temperature due to the lower air temp. Perhaps there are also very slightly increased pumping loses due to a marginally narrower throttle opening for a given crank torque / power. On top of that there are the other factors mentioned above - increased electrical load, mechanical friction losses, and other parasitic losses.

« Last Edit: December 22, 2011, 11:56:18 pm by alackofspeed »

Offline Little_Dave

  • Won't Shut up.
  • *****
  • Thank You
  • -Given: 9
  • -Receive: 28
  • Posts: 921
Re: Whats your winter mpg
« Reply #20 on: December 23, 2011, 04:51:55 pm »
Was shocked to get an average 33mpg on a 160mile round trip peaking at 39mpg for a while yesterday!!!  :wink: never seen it average above 30 before or seen figures over 34 at any speed lol

Dave

Offline Mk5 GTian

  • Just look at my post count
  • ******
  • Thank You
  • -Given: 62
  • -Receive: 37
  • Posts: 1374
  • Wolfsburg - Probably the Best Cars in the World
Re: Whats your winter mpg
« Reply #21 on: December 25, 2011, 09:43:09 pm »
I reckon I'm getting an average of about 29 at the moment, but that includes a lot of stop/start around suburbia. I'm gonna try turning the climate off once I'm demisted, and see if that makes a difference.

Fun Golf: 2016 mk7 R DSG 3 door. Work Golf: 2015 mk7 1.4 TSI GT ACT 5 door.
Gone but not forgotten : mk2 Golf GTI 16v, mk4 Golf V6 4Motion, mk5 GTI Storm Developments Stage 1, mk5 GTI Revo Stage 1, BMW 330ci, Skoda Octavia VRS Revo Stage 2, BMW Z4 Sdrive35i.

Offline NotNormal

  • Always Involved
  • ****
  • Thank You
  • -Given: 1
  • -Receive: 6
  • Posts: 317
    • Email
Re: Whats your winter mpg
« Reply #22 on: December 26, 2011, 05:04:28 pm »
My average per tank has gone down to 33.6mpg .....

..... Not bad for a 3.0 twin turbo diesel  :happy2: :party:

Don't judge me by your ability !
__________________________________

Current daily crapper - Audi A6 Avant 3.0tdi SLine Quattro

Previous favourite rides :

BMW E92 335d M/Sport (351/520)
BMW  E92 335d SE (339/500)
Golf MK5 GT170 Diesel Sport (220/330)
Audi S4 (B6) - Noggy blue (366bhp)
Evo VI (6 ;) ) RSII - Scotia White (420bhp)
Astravan Sportive 1.9 CDTi - 190bhp
Astra GTE (MK2) Turbo (

Offline rich83

  • Just look at my post count
  • ******
  • Thank You
  • -Given: 165
  • -Receive: 802
  • Posts: 13444
    • MK5 Golf GTI
  • My Ride: https://www.mk5golfgti.co.uk/forum/index.php?PHPSESSID=pbh342dtjojk7mhcji7b545le0&/topic,19740.0.html
Re: Whats your winter mpg
« Reply #23 on: December 27, 2011, 03:24:24 pm »
My average per tank has gone down to 33.6mpg .....

..... Not bad for a 3.0 twin turbo diesel  :happy2: :party:



What car is that on? 123D?

Offline NotNormal

  • Always Involved
  • ****
  • Thank You
  • -Given: 1
  • -Receive: 6
  • Posts: 317
    • Email
Re: Whats your winter mpg
« Reply #24 on: December 27, 2011, 09:43:37 pm »
What car is that on? 123D?

Nah, it's my 335d coupe .... 3.0 ..... The 123d is a 2.0 twin turbo  :smiley:
Don't judge me by your ability !
__________________________________

Current daily crapper - Audi A6 Avant 3.0tdi SLine Quattro

Previous favourite rides :

BMW E92 335d M/Sport (351/520)
BMW  E92 335d SE (339/500)
Golf MK5 GT170 Diesel Sport (220/330)
Audi S4 (B6) - Noggy blue (366bhp)
Evo VI (6 ;) ) RSII - Scotia White (420bhp)
Astravan Sportive 1.9 CDTi - 190bhp
Astra GTE (MK2) Turbo (

Offline rich83

  • Just look at my post count
  • ******
  • Thank You
  • -Given: 165
  • -Receive: 802
  • Posts: 13444
    • MK5 Golf GTI
  • My Ride: https://www.mk5golfgti.co.uk/forum/index.php?PHPSESSID=pbh342dtjojk7mhcji7b545le0&/topic,19740.0.html
Re: Whats your winter mpg
« Reply #25 on: December 27, 2011, 09:45:28 pm »
What car is that on? 123D?

Nah, it's my 335d coupe .... 3.0 ..... The 123d is a 2.0 twin turbo  :smiley:


Doh... of course it is. Thats pretty good MPG for that engine and power.  :happy2: