307sw 1.6 hdi110, miles per gallon?

Hi,
I have the above car. Everywhere on the internet it says that it will do
around 50MPG (UK)There are lots of reviews where people seem to be getting
that sort of mileage. What a suprise - mine doesn't get above 42 and if I
drive normally I get 38. It has done 80,000 miles. It has been serviced
properly from day one and even when driving on the motorway I am getting 42.
Is this normal? Could something be wrong and what can I do to get more
mileage (Without driving like an old man)? what difference could the fuel
filter make?
Cheers

 

You dont know untill you have tryed.so fit one and find out.(the reason
your doing less miles is you are not getting more petrol for the price
as it has gone up and up over the past 2-3 months)

 

the price of fuel doesn't make any difference to the mileage! It only makes
a difference to the total cost. I have worked it out on how far I have gone
on how many litres.

 

So are you going to fit a fuel filter to see if that makes any diff to
the miles you are trying to get?

 

I would say you're doing well. My 53 plate 2.0 HDi DTurbo 110 averages 28
MPG in stop start town driving or typical UK driving conditions, probably no
better than an equivalent petrol engine. Makes up for it on longish motorway
runs when it'll hit 50 or so. The highest I've had is 52.
Because of the massive price hike on diesel I'm seriously considering going
back to petrol when I get round to replacing the car.

 

The price of diesel might come down one day .we can only wish

 

my 1999 120,000 mile 406 2.0L 110hp hdi gets 50+ mpg all the time, most of
the driving is on 60mph plus "A" roads.
My Partner Van which has the 2.0L 90hp hdi engine does about 46 mpg on the
same roads.
Make me an offer in the region of £1600 and the 406 is yours. )

GGJ

 

Ditto on the 406, my 2000 HDi90 with 100K on the clock only drops below
50MPG if I clog it.
I would have expected a 307 HDi110 to equal that.
Does this 110 have the intercooler?

Djimbo.

 

I am not sure about the intercooler. But I don't think so. What does it look
like? Godfrey says his does 28mpg! There must be something seriously wrong
there? Especially when Gary gets 50+ all the time. Gary, can I ask how you
have worked it out?

How can these cars with the same engine (mine is a 1.6 110 HDI) get 10, 15
or 20 mpg difference when we are all just driving normally? Also, why can't
I EVER get the one that does 50+

I think I will change the fuel filter but it isn't going to make 10mpg
difference. I did a 300 mile run yesterday all on motorways and never above
75 and still only get 40mpg, this is so frustrating. A mate has a VW T5 van
that does the same mpg, it can hold 1/2 ton of stuff in the back, you can
sleep in it, it looks cool and it was cheaper than my 307 and will be worth
more in 2 years time. Typical.

 

I doubt it would get 110 HP out of 1600 without an intercooler, and that's a
place to start checking.
OK I know this may be teaching granny to suck eggs, but are you sure you
don't have one of the brakes binding or a tight wheel bearing?
If it's been serviced recently they often leave the brakes a bit tight.
Also try doing a tank check run on the motorway at 60MPH if you can stand
it.
All diesel engines have a tendancy to drink it if you exceed a speed they're
happy with.
I always thought the best ecconomy was when driving with the revs that gave
the max torque (should be in the book somewhere), but I may have dreamed
that one.
and of course it amounts to Grandad driving which I'm guessing people don't
buy 307 110 Hps for.

I didn't realise the 307 110 only had the 1600 engine in, last time I saw
one of those was in my first 305.
I daresay the top end's been altered a lot, but I bet it's the same bottom
end.
My old 305 did 50 MPG but only at the cost of crappy performance, it was
wildly undergeared and would only do 70MPH, and that was with your teeth
gritted.
The governer cut in around 80 (Although the wife did once get pulled for
speeding on the motorway.... women drivers eh!)

Djimbo.

 

Changing the fuel filter will make absolutely no difference. Changing
the air filter might.

 

There are 2 versions of the HDi 110 Turbo, the older 8 valve 2.0L (which my
53 plate 307 is), and the newer more efficient 1.6 16 valve version. Also I
think I'm correct in saying that the 1.6 has an improved turbo. This will
account for some of the reported differences in MPG but I should clarify my
28MPG figure. This is short runs through congested town traffic where
average speed is only about 10MPH or less. Unfortunately this accounts for
most of my daily driving at the moment. On 'A' roads I'll get 40 - 44 MPG
and on long motorway runs at the legal limit 49 - 52.
The car has been regularly serviced so I don't think there's anything
seriously wrong, just the driving conditions.

Godfrey

 

Hi Lenny
I work the mpg by filling it up to the brim, setting the trip to zero, and
then next time I fill it up I make a note of the mileage on the trip. I then
make a note of how many litres the pump says I have put in. I take off 5
miles for every 100 miles covered on the trip to allow for trip gauge and
speedo error.

litre to gallons 4.546 litre = 1 gallon UK

I take it you are using UK gallons as your measurement and not the smaller
US gallon which is 3.785= 1 US Gallon

Gary

 

Hi Lenny
I work the mpg by filling it up to the brim, setting the trip to zero, and
then next time I fill it up I make a note of the mileage on the trip. I then
make a note of how many litres the pump says I have put in. I take off 5
miles for every 100 miles covered on the trip to allow for trip gauge and
speedo error.

litre to gallons 4.546 litre = 1 gallon UK

I take it you are using UK gallons as your measurement and not the smaller
US gallon which is 3.785= 1 US Gallon

Gary

 

thanks for all the chatter.
I check the miles per gallon by setting the trip metre to zero after filling
it up. then the next time I fill up I check the mile travelled and the
litres used. Divide by 4.54 and you have the mpg.

It is a 54 plate 307SW 1.6 HDI

No, the brakes aren't binding and the amount the last owner spent on
servicing everything should be brand new and tip top condition. I found a
booklet with all the costs - unbelievably expensive to keep maintained
considering that it is only just out of warranty. Or, you could use this
book as a perfect example why you shouldn't get the car serviced from the
same dealer you purchased it from.

 

Hi,

That's the method I use, too.

Now having the trip computer doesn't change my usual calculation method,
which showed me how the trip computer lied to me : last time reported an avg
5.7L/100km (49MPG) when I calculated it as being 5.05 (56MPG).
Driving around Paris and suburbs I'm getting about 50-55MPG.

BTW, I use to drive with the instant fuel economy mode, and if I depress the
throttle by a couple of mm the speed doesn't change but the fuel amount
drops... Just a trick to show how these "everytime turbocharged" engines are
sensitive. Of course, during "basic" accelerations (i.e not really hard) I
can get over 10L/100 (28MPG)
Worst figure I had was a very hard acceleration (2nd gear almost from idle,
full load) which told me I was doing 27L/100 (10MPG). Still a bit scary

HTH,

 

my old XJ jag's instant mpg computer would drop to 6 mpg if you put your
foot down hard.
drive it steady and 25 to 26 mpg was possible

GGJ

 

Just for the record, my (electrically unreliable!) 307 1.6 16v 54 plate
salon (lighter than SW) has always given me about 53mpg on mixed roads
but not thrashed. On trips to France mostly along Autoroutes doing
about 78mph, I get 57mpg.

This will

Regards