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C- Max MPG


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#1 Parkgate Miller

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Posted 29 September 2008 - 10:19 PM

I am running a 1.6 TDCI which is 10 mnths old, and I can`t get better than 42-43 mpg,is this normal ?

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#2 RUSSBUS

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Posted 30 September 2008 - 07:32 AM

I am running a 1.6 TDCI which is 10 mnths old, and I can`t get better than 42-43 mpg,is this normal ?

I GOT A 1.6 PETROL 13 MONTHS OLD AND THE BEST IT DOES ON A LONG TRIP IS 38 TOTHE GALLON THATS 10 LESS THAN MY LAST CAR A 1.6 SCENIC

#3 mintalkin

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Posted 30 September 2008 - 08:24 AM

i average 45-50mpg from a 2.0 130 but it depends on driving style this can drop if driven hard (carn't resist some times)

#4 Mark1971

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Posted 01 October 2008 - 08:47 PM

I get around the same while driving around town. My trip to work is a 17 mile trip along an A-road and I get around 55-65mpg if I drive very carefully otherwise this'll drop to around 45-50mpg if I do overtake anything and keep up with the traffic!

I was expecting better to be honest.

#5 RUSSBUS

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Posted 25 October 2008 - 03:29 PM

HI , DID A 300 MILE ROUND TRIP OTHER WEEK AND GOT 46 TO THE GALLON ! GETTNG BETTER AS THE MILAGE RISES , ITS AT 9000 NOW THAT BETTER FOR A 1.6 PETROL :rolleyes:

#6 ginner999

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Posted 16 February 2009 - 12:58 AM

Chipped 1.6 tdci
was returning around 42.5 mpg around the village odd trip into town.
with chip on there is def more power so the temp to put your foot down is crazy but honestly if you keep off the power pedal
then it does 46 mpg does not sound much but its 3.5 miles and if you want to you can cover them quicker.
Views on chips please?

#7 Dickster555

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Posted 25 March 2009 - 03:43 PM

Chipped 1.6 tdci
was returning around 42.5 mpg around the village odd trip into town.
with chip on there is def more power so the temp to put your foot down is crazy but honestly if you keep off the power pedal
then it does 46 mpg does not sound much but its 3.5 miles and if you want to you can cover them quicker.
Views on chips please?

Hi only just noticed your post. I've been looking at Bluefin chipping system (381 all in) by superchips for my 2.0TDCi. I've attached the dyno data (pdf file) for my car from superchips. It looks like the 2.0TDCi they tested put out 152bhp standard at the flywheel (Ford quote 136bhp - is this at the wheels?) With the chip fitted it gives 176bhp at the flywheel so i presume by the same factoring this is @157bhp at the wheels. What make of chip is yours? Also just had an insurance quote off www.adrianflux.com (modified car insurance specialist) that is only 40 more than i'm paying now with the chip fitted, lowered suspension, sport dampers and 18" wheels!!! There's not much pursuading me not to go for it (apart from the missus!)

Attached Files



#8 gabell

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Posted 31 May 2009 - 05:13 PM

Been investigating poor mpg in the c-max for a few weeks now.

A lot of people seem to be having the same problems. I average ( in a 1.6 tdci 57 plate) around 43mpg going to work and back (20 mile on a-roads), with the maximum of 50mpg on a motorway at 60 mph . Frankly, I am very dissappoined, especially when comparing with the quoted combined average of 57 mpg from ford, and comparing against my previous diesels :-
Rav4 2.0 ltr average 39mpg (4 wheel drive and heavy) , motorway 47mpg
Toyota auris sr180 2.2 diesel average 47mpg motorway 56mpg
Skoda vrs diesel 170 bhp estate average 47mpg , motorway 58mpg
civic 2.2 diesel, average 52mpg, motorway 60+ mpg

You can see from these figures, that my previous diesels have been much bigger and faster cars, yet have returned much better economy.

I have checked :-
1. the ECU fault codes, none exist. got a lead from ebay.
2. any leaking air inlet pipes, especially the large one across the front of the engine, all air tight. quick check is to open the air filter box and block the air inlet pipe at the MAF sensorto see if you can stall the car and watch all the pipes collapse under suction.
3. cleaned the MAF sensor.

I am now going to see the ford dealer to see if there is an ECU update.

I would also be interested in anyone else with the same engine and an OBD lead to see what air flow, air temp, oxygen sensor, rpm and fuel pressure they have at IDLE, 2000 and 4000 rpm for comparison.


any other ideas would also be welcome.

Surely a 1.6 turbo diesel should be much better than 45 mpg.

I am tempted to buy a diesel chip for better economy, but want to see if there is a faulty sensor or ecu first........

#9 charl

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Posted 19 July 2009 - 06:06 PM

hi i am new to the forum and i am finding it very interesting and good for advice. i have a ford focus cmax 1.6 tdci auto ghia 2005 and we can only get 30mpg according to the trip computer on short journeys and 52mpg on the motorway, we are going away soon and its almost a 400 mile journey we fill up at tesco at the moment and wonder if we went to another petrol station like bp the mpg would improve, the car is regularly serviced at our local ford dealer if anybody got any ideas as to what else we can do to improve the performance of our car it would be very much appreciated thank you

#10 sr-performance

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Posted 21 July 2009 - 10:38 AM

Hi all,
The fuel you use also makes a difference to economy as supermarket fuel is not very good so try to use shell etc as it's a much better fuel..
A good remap on any car will give power/torque and improved fuel economy..
manufacturers figures are very rarely met in the real world of driving on the road.
If anyone requires any info etc on remapping please just ask or have a look on my website... :)

#11 sierragls

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Posted 24 September 2009 - 08:31 AM

Been investigating poor mpg in the c-max for a few weeks now.

A lot of people seem to be having the same problems. I average ( in a 1.6 tdci 57 plate) around 43mpg going to work and back (20 mile on a-roads), with the maximum of 50mpg on a motorway at 60 mph . Frankly, I am very dissappoined, especially when comparing with the quoted combined average of 57 mpg from ford, and comparing against my previous diesels :-
Rav4 2.0 ltr average 39mpg (4 wheel drive and heavy) , motorway 47mpg
Toyota auris sr180 2.2 diesel average 47mpg motorway 56mpg
Skoda vrs diesel 170 bhp estate average 47mpg , motorway 58mpg
civic 2.2 diesel, average 52mpg, motorway 60+ mpg

You can see from these figures, that my previous diesels have been much bigger and faster cars, yet have returned much better economy.

I have checked :-
1. the ECU fault codes, none exist. got a lead from ebay.
2. any leaking air inlet pipes, especially the large one across the front of the engine, all air tight. quick check is to open the air filter box and block the air inlet pipe at the MAF sensorto see if you can stall the car and watch all the pipes collapse under suction.
3. cleaned the MAF sensor.

I am now going to see the ford dealer to see if there is an ECU update.

I would also be interested in anyone else with the same engine and an OBD lead to see what air flow, air temp, oxygen sensor, rpm and fuel pressure they have at IDLE, 2000 and 4000 rpm for comparison.


any other ideas would also be welcome.

Surely a 1.6 turbo diesel should be much better than 45 mpg.

I am tempted to buy a diesel chip for better economy, but want to see if there is a faulty sensor or ecu first........


Did you ever got the ecu updated? did it make any differance to the MPG?

#12 rjays

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Posted 01 October 2009 - 11:30 AM

Hiya...for what its worth..my c-max was showing between 32-35mpg...what i did was to disconnect the battery for 15 mins..(if you see my other post on ford c-max i thought it may do something!!)....after all when your home pc freezes you disconnect it from the mains and "hey presto" it works fine again..anyway i disconnected the battery and next time i drove the mpg rose dramatically....it now does at least 51.5 and the highest ive had is 59.6....this is "normal" driving not long motorway driving,as regards to the other issues with the car..there is no improvement....but give it a go...it wont cost anything...but make sure you have the audio codes!!...hope this helps...Rob

#13 sr-performance

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Posted 01 October 2009 - 05:42 PM

Hi as posted above, disconnecting your battery makes the ECU relearn it's values so you should normally see a difference, also worth doing if you change to shell v power etc..:)

#14 sierragls

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Posted 01 October 2009 - 09:04 PM

i will gove it a go, im only getting 40ish everyday driving, what engine do you have the Rjays 2.0 or 1.6?

#15 rjays

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Posted 01 October 2009 - 10:21 PM

hiya sierragls...i have a 1.6 diesel auto 2004

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