Car Talk - Non S2000 General Motoring and Non S2000 Car Talk

When is it worth switching off the engine?

Thread Tools
 
Old Oct 3, 2008 | 03:08 PM
  #1  
Petron's Avatar
Thread Starter
15 Year Member
 
Joined: Feb 2007
Posts: 1,283
Likes: 0
From: Sunny South Devon
Default When is it worth switching off the engine?

Something that has always puzzled me.

How long do you need to be sat stationary for it to be worthwhile turning the engine off? It must take a fair chunk of fuel to start it up again, but there is an optimum time delay to make it worth doing.

My gut feeling is that if I think I'm not going to move for more than a couple of minutes it's worth cutting the engine, but I might be way off the mark.

Stingy bast*rd?
Sad anal tw*t?

Any other suggestions?
Reply
Old Oct 3, 2008 | 03:09 PM
  #2  
lower's Avatar
20 Year Member
Liked
 
Joined: Mar 2004
Posts: 10,652
Likes: 17
From: Market Harborough, Leics.
Default

Its what BMW do with the 1 series diesel.
Reply
Old Oct 3, 2008 | 03:27 PM
  #3  
Jonsey Boy!'s Avatar
Registered User
 
Joined: Oct 2006
Posts: 3,571
Likes: 0
From: Merseyside
Default

Originally Posted by lower,Oct 3 2008, 11:09 PM
Its what BMW do with the 1 series diesel.
Worst thing about the new 1 series IMO.



Don't turn your engine off.
Reply
Old Oct 3, 2008 | 03:29 PM
  #4  
Beardie's Avatar
Registered User
 
Joined: Nov 2002
Posts: 16,126
Likes: 3
From: Lanarkshire
Default

You may not have a choice in future, the Guvearnmunt, (well, West Sussex County Council in actual fact), is looking at fining you if you don't.

http://www.mailonsunday.co.uk/news/article...affic-jams.html
Reply
Old Oct 3, 2008 | 03:34 PM
  #5  
Petron's Avatar
Thread Starter
15 Year Member
 
Joined: Feb 2007
Posts: 1,283
Likes: 0
From: Sunny South Devon
Default

Originally Posted by Jonsey Boy!,Oct 4 2008, 12:27 AM
Don't turn your engine off.
Even if the wait is over 5 minutes?

My daily commute takes me over the A69 to Newcastle and ther are some traffic light controlled roadworks at Haydon Bridge that take at least 5 minutes to change. Surely I could save a thimbleful of V-power by turning the engine off
Reply
Old Oct 3, 2008 | 03:35 PM
  #6  
Jonsey Boy!'s Avatar
Registered User
 
Joined: Oct 2006
Posts: 3,571
Likes: 0
From: Merseyside
Default

Originally Posted by Beardie,Oct 3 2008, 11:29 PM
You may not have a choice in future, the Guvearnmunt has decided that they're going to fine you if you don't.

http://www.mailonsunday.co.uk/news/article...affic-jams.html
C'est la vie, I only do 10k miles a year between 2 cars, I'm considered green anyways.

Nothing will affect me!
Reply
Old Oct 3, 2008 | 03:38 PM
  #7  
Petron's Avatar
Thread Starter
15 Year Member
 
Joined: Feb 2007
Posts: 1,283
Likes: 0
From: Sunny South Devon
Default

Thanks Beardie, I have my answer:

The AA said: 'For less than a minute it is not fuel efficient to switch off because you will use more fuel starting up than you will save. It only becomes fuel efficient to switch off if you are going to be stopped for a minute or more.'

Years of pondering solved
Reply

Trending Topics

Old Oct 3, 2008 | 03:41 PM
  #8  
Jonsey Boy!'s Avatar
Registered User
 
Joined: Oct 2006
Posts: 3,571
Likes: 0
From: Merseyside
Default

Originally Posted by Petron,Oct 3 2008, 11:38 PM
Thanks Beardie, I have my answer:

The AA said: 'For less than a minute it is not fuel efficient to switch off because you will use more fuel starting up than you will save. It only becomes fuel efficient to switch off if you are going to be stopped for a minute or more.'

Years of pondering solved
I think you need a hybrid
Reply
Old Oct 3, 2008 | 03:42 PM
  #9  
Petron's Avatar
Thread Starter
15 Year Member
 
Joined: Feb 2007
Posts: 1,283
Likes: 0
From: Sunny South Devon
Default

Originally Posted by Jonsey Boy!,Oct 4 2008, 12:41 AM
I think you need a hybrid
I think I need a rise
Reply
Old Oct 3, 2008 | 03:49 PM
  #10  
chilled's Avatar
Registered User
 
Joined: Oct 2004
Posts: 13,579
Likes: 1
From: sideways with an OWL!
Default

I think you need to stop reading the the nazi on sunday. Sorry, mail on sunday.
Reply



All times are GMT -8. The time now is 04:33 PM.