• Hi Guest why not show off your SEAT! (now fixed)
    You can now share your favourite car photos in the new media gallery including embedding pictures from your Instagram account.
  • We're live with the new site! Please let us know what you think in this thread. Also let us know if you spot any quirks.

Can you still get good economy in cold weather?

Generic

2010 Ibiza FR 2.0 TDi
Nov 16, 2009
269
0
Grantham
I understand that cold weather normally affects the performance and economy of most, if not all, diesel engines. I've noticed in my SC 1.6TDi I get 52MPG when it's a warm day (7oC I class as warm at the moment!), and I get around 46-47MPG when it's cold (-0.5 --> 0.5 like today). :blink:

Is there any way to keep the MPG up in cold weather, i.e. addictives? Or is it just something to live with?
 

EdHorny

Loves his Boc.
Oct 12, 2008
453
1
Burntwood
Something to live with I'd guess mate. If you put additives in you have to add the cost of the additives to the cost of your diesel, so to get your mpg back you will spend more and therefore not make a saving.

Grin and Bare it mate.

ED
 

andyspencer

Eat My Soot
May 19, 2008
263
0
Birmingham
Its all to do with the expansion of your internals. Physically when theyre cold they dont have the same tollerances as theyre intended to. (Hence the rattle on cold etc) So more oil / fuel (if its diesel) tends to get used when cold.. On the other side, cold air is good for your engine. But offset that against a cold engine, you'l be slightly worse for efficiencey.
:)
 

bigman75

Active Member
Jul 21, 2009
211
0
Wolverhampton
It's defo to do with an heavy foot!

The past few days i've being going easy and i'm currently achieving 55-60 mpg.

This past month i've managed to squeeze out just shy of 500 miles from a full tank. I think thats quite impressive, given that sometimes i'm heavy footed! ;)

As a footnote, Ive used millers additive from day one.

I've done just over 8k now so maybe the engine is loosening up a bit??

Cheers
 

Generic

2010 Ibiza FR 2.0 TDi
Nov 16, 2009
269
0
Grantham
Nope, not had a heavy right foot at all to be totally honest. I've made sure I drive sensibly when I've been testing the above MPG issue.

Is there any use to additives then? Are they not just a scam? Do they make any difference to a new engine?
 

Octane2097

Naturally Aspirated
Jan 20, 2007
792
0
South Yorkshire
weather does affect fuel econmy remember with my mk4 diesel during summer months id regulaly get 65mpg plus driving to work
during the winter months around 55mpg
 
DPM Performance