Mondeo TDCI 130 MPG

[Ecosseven]

Morning all,

I'm just check the MPG (by manual calculation) on my 2005 Mondeo TDCI 130 and I'm only getting aound 38 MPG. I don't drive the car hard and do a mixture of motorway, rural and urban driving.

Any ideas why the MPG is relatively low?

The trip computer says I'm getting 52 MPG!

Thanks.

[FlashmanChop]

are you sure you calculated it correctly? i.e brim to brim and your decimal places in the right spot? I know they are not 100% accurate but i wouldnt guess it was that far out!

mine is about spot on, but not done it properly in a while. I dont think i have ever had it that low and can still manage 52 on a 85mph run from sunderland to leeds

[Ecosseven]

I reset the trip last time I filled up and filled it again this morning. I have included the figures below.

400 miles
Fuel cost per litre - £1.37
Total bill = £65

[T0M]

Ecosseven said:

I reset the trip last time I filled up and filled it again this morning. I have included the figures below.

400 miles
Fuel cost per litre - £1.37
Total bill = £65

So,

£65 / £1.37 = 47.44 litres of fuel

47.44 litres / 4.54609 = 10.43 gallons.

400 miles / 10.43 gallons = 38.35 MPG ?

[Ecosseven]

T0M said:

Ecosseven said:

I reset the trip last time I filled up and filled it again this morning. I have included the figures below.

400 miles
Fuel cost per litre - £1.37
Total bill = £65

So,

£65 / £1.37 = 47.44 litres of fuel

47.44 litres / 4.54609 = 10.43 gallons.

400 miles / 10.43 gallons = 38.35 MPG ?

Yeah, same result as me. The handbook says I should be getting 47 MPG combined.

Any ideas why is so low? Are there any sensors that need checking / replacing?

[Lefty]

Something's not right with it.

I had one as a company car about 8 years ago and it was doing around 50mpg on a run (calculated).

[rb5er]

My 2.5 subaru legacy awd petrol costs 65quid to fill up and does around 320miles to a tank.

A smaller capacity diesel 2wd car should do more than an extra 80miles

[FlashmanChop]

Just pulled one of my receipts from file:-

59.50 L@ £1.419 = £84.43

59.50 / 4.546 = 13.09 gallons

622 miles / 13.09 = 47.52mpg.

And yes, I am not sure how I get 59.50litres in a 55 litre tank….

[stevenr]

It would probably benefit from having the EGR valve cleaned.I'll be doing mine on Saturday to see if i can get a few more MPG out of it

[mnkiboy]

Are you resetting the trip computer at the same time you fill up?

[Steve_F]

My ST tdci is lucky to get much over 40 indicated with roof racks on, 42-44 without (less at the moment with the winter tyres on). All indicated but I think it's about right.

Got a bit of a heavy right foot but I'm not convinced the Ford diesels are quite as good as I was led to believe.

[J.B.R.]

This is strangely low mpg.
I've had the 130 6 speed and ST tdci, both averaged around 50mpg.
Mixture of 25% urban and 75% motorway at a rough guess.
I'm now averaging 50mpg again, this time with a manual 330d beemer (on receipts against mileage).

Maybe a bit heavy with the loud pedal?
EGR valve could be sticky (but suspect it would hesitate on load).
Have you changed the air filter? More smoke on acceleration could mean blocked filter.

Cheers
JBR

[MC Bodge]

Is the temperature gauge reaching the middle of 'normal'? The second (hidden) oil cooler thermostat that very few people know about can prevent the engine warming up properly.

Clean the EGR

Clean the inlet manifold

Carefully clean the inlet ports on the cylinder head

Clean the MAF sensor

Change the oil

Fit a new air filter at least every 10K, not every 3 years.

Give it a good thrashing (3rd gear on the motorway or a flat-out blast across Europe).

Edited by MC Bodge on Tuesday 3rd January 10:36

[andy-xr]

Seconding the er, second thermostat. It's been noted a couple of times on the owners websites