39mpg in sport mode? 35 in normal mode! new owner asking for a bit of advice - MINI Cooper Forum

Second Generation MINI Cooper S MINI Cooper S Late 2006 - Present

User Tag List

 
LinkBack Thread Tools Rate Thread
post #1 of 6 (permalink) Old Jun 7th, 2014, 10:56 PM Thread Starter
MINI2 Newbie
 
Join Date: May 2014
Local Time: 04:13 PM
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)

United Kingdom
 
39mpg in sport mode? 35 in normal mode! new owner asking for a bit of advice

HI all

I have recently purchased an 09 mini cooper s with 9k on the clock. Having loved the drive since buying the car there has been a few niggles like with all cars.

1. I get 39mpg in sport mode yet 35mpg in normal? any ideas?

2. a slight hesitation in normal mode on harsh acceleration. is this normal? never owned a mini cooper s before so not sure.

3. when driving about 70mph and you slightly de celerate it feels like it misses a beat really hard to explain. just wondered if this is how the car is or if theres a prob? any ideas?

Any help would be much appreciated.

Thanks
fameboi is offline  
Sponsored Links
Advertisement
 
post #2 of 6 (permalink) Old Jun 8th, 2014, 10:18 AM
MINI2 Master
 
Join Date: Mar 2009
Location: Tyneside
Local Time: 04:13 PM
Posts: 1,267
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 14 Post(s)

United Kingdom
 
Quote:
Originally Posted by fameboi View Post
1. I get 39mpg in sport mode yet 35mpg in normal? any ideas?
The problem there is how accurately this can be measured. Even if you run the comparison over several tankfuls for each mode using odometer miles and petrol pump gallons (which is about the shortest distance over which accurate results are possible), you can't be sure the driving conditions were the same for both - a difference of several mpg between two tankfuls that you think were driven the same is to be expected for things like weather conditions, temperature, traffic, etc.

No suggestions for the other two.
Angib is online now  
post #3 of 6 (permalink) Old Jun 8th, 2014, 10:27 AM Thread Starter
MINI2 Newbie
 
Join Date: May 2014
Local Time: 04:13 PM
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)

United Kingdom
 
thanks for the reply. I use the good old fashion calculator to work out the mpg not the on board computer as i know these can be a bit out.

was just curious as all seems a bit odd. i saw a lot of posts where people were only getting 32mpg.
fameboi is offline  
post #4 of 6 (permalink) Old Jun 8th, 2014, 07:03 PM
noob
 
Join Date: May 2014
Local Time: 08:13 AM
Posts: 7
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)

United States
 
Quote:
Originally Posted by fameboi View Post
2. a slight hesitation in normal mode on harsh acceleration. is this normal? never owned a mini cooper s before so not sure.
This is one or both of the following:

- The injectors are dirty. Fuel system cleaner (a good one) will help.
- The back of the intake valves are dirty. Cleaning them requires removing the intake manifold and using a walnut blaster (its an official BMW tool, btw). Not cheap, but worth it.

With only 9K on the clock, I doubt if it's the intake valves, but it will need it eventually. Direct injection engines are a bugger that way.

I had to run three cans of injector cleaner through mine before the hesitation problem got better. I used B&G 44K, which lots of people swear by. Not cheap, but it seems to do the trick.
pokeyjoe is offline  
post #5 of 6 (permalink) Old Dec 14th, 2014, 06:07 PM
MINI2 Newbie
 
Join Date: Mar 2014
Location: staffordshire
Local Time: 03:13 PM
Posts: 16
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)

United Kingdom
 
fuel economy

Hi,
that's good MPG for a mini,
ours did 31mpg on a good run!
hesitation in normal mode quite common, our did but not in sport so just drove it in sport often
jskel is offline  
post #6 of 6 (permalink) Old Dec 15th, 2014, 12:30 PM
MINI2 Regular
 
Join Date: Mar 2006
Local Time: 03:13 PM
Posts: 86
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)

United Kingdom View GarryThomas's Classified Ads
 
I drive an F56 driving a normal week 37 mpg is about right, 30 miles a day busy motorway
traffic. And other a roads Mon- Fri, average speed is only 23 mph on the computer
but 40-70 while driving on longer journeys rises 200 +miles 48-9 can be achieved as Mini promoted.
GarryThomas is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Rate This Thread
Rate This Thread:



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome