R56 :: Hatch Talk (2007+) MINI Cooper and Cooper S (R56) hatchback discussion.
Sponsored by:
Sponsored by:

Increase gas mileage

  #1  
Old 07-08-2019, 06:42 PM
Shotgun_banjo
Shotgun_banjo is offline
2nd Gear
Thread Starter
Join Date: May 2017
Location: Vancouver, Canada
Posts: 133
Likes: 0
Received 10 Likes on 9 Posts
Increase gas mileage

Has anyone experienced improvement on gas mileage on their car after replacing the upper oxygen sensor and ignition coils? Before the replacement when I see 2 lines on the gas gauge the car spins around 500km now after replacement I get around 590km. Wife is the one driving the car and she uses it as her daily and the gps is showing same route and average speed on every trip.
 
  #2  
Old 07-09-2019, 04:47 AM
GsxR1000
GsxR1000 is offline
1st Gear
Join Date: Nov 2009
Posts: 26
Likes: 0
Received 1 Like on 1 Post
Hello,

I have a 2009 S with 140K miles and, "yes", I noticed a increase (actually, a return to normal good mpg) when I replaced spark plugs, coils, and both O2 sensors.

W
 
  #3  
Old 07-09-2019, 05:21 AM
njaremka's Avatar
njaremka
njaremka is offline
6th Gear
Join Date: Jul 2016
Location: Connecticut
Posts: 1,422
Received 160 Likes on 140 Posts
Replacing the O2 sensor, spark plugs, and coils will make the burn much more efficient, which leads to better fuel mileage. Shouldn't be much of a surprise, but rather emphasizes the need for regular maintenance on those items.
 
  #4  
Old 07-09-2019, 10:13 AM
DVLDOG's Avatar
DVLDOG
DVLDOG is offline
Neutral
Join Date: Jun 2019
Location: Denver CO
Posts: 8
Received 0 Likes on 0 Posts
How often would O2 sensors need to be replaced?
 
  #5  
Old 07-09-2019, 12:26 PM
njaremka's Avatar
njaremka
njaremka is offline
6th Gear
Join Date: Jul 2016
Location: Connecticut
Posts: 1,422
Received 160 Likes on 140 Posts
Originally Posted by DVLDOG View Post
How often would O2 sensors need to be replaced?
The O2 sensors should only need replacement when they start to give OBD faults.
 
  #6  
Old 07-09-2019, 12:32 PM
DVLDOG's Avatar
DVLDOG
DVLDOG is offline
Neutral
Join Date: Jun 2019
Location: Denver CO
Posts: 8
Received 0 Likes on 0 Posts
Originally Posted by njaremka View Post
The O2 sensors should only need replacement when they start to give OBD faults.

That's how I have worked it on all of my other vehicles. Reading it here it seemed they were being changed for no error reason....thanks!
 
  #7  
Old 07-10-2019, 10:05 PM
Shotgun_banjo
Shotgun_banjo is offline
2nd Gear
Thread Starter
Join Date: May 2017
Location: Vancouver, Canada
Posts: 133
Likes: 0
Received 10 Likes on 9 Posts
How about spark plugs and coils? Whats the good change interval? Should the coil be replaced when it acts up?
 
  #8  
Old 07-11-2019, 10:14 AM
patpatpat
patpatpat is offline
1st Gear
Join Date: Aug 2015
Posts: 39
Likes: 0
Received 2 Likes on 2 Posts
For my non-s R56, I see wear on coils and plugs around 40K miles
 
  #9  
Old 07-11-2019, 06:29 PM
Minidogger
Minidogger is offline
3rd Gear
Join Date: Mar 2018
Location: Iowa
Posts: 257
Received 31 Likes on 26 Posts
What should I look for to see coil wear? Traces of arcing?
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
orangecrush
General MINI Talk
51
10-23-2008 12:21 PM
Tri3
R56 :: Hatch Talk (2007+)
16
08-14-2006 04:28 PM
runnymilk
Stock Problems/Issues
5
03-02-2003 02:34 PM
mpemburn
R50/R53 :: Hatch Talk (2002-2006)
12
01-29-2003 01:15 PM
KPiglet
R50/R53 :: Hatch Talk (2002-2006)
19
10-02-2002 01:31 PM


Thread Tools
Search this Thread
Quick Reply: Increase gas mileage


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.