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(Post Link) post #1 of 38 Old 12-02-09 Thread Starter
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Dilema...

I have my lovely 2001 156 sportwagon. Its a 1.6l and I'm very happy with it.
It seems I have to change jobs soon and I estimate I will be spending €110 per week based on current consumption levels. I've worked it out at about 12l/100km. Does this sound correct?


I've read that the 1.9jtdm engine is pretty good with avg's of 42.2mpg on the gt and 48.7mpg on the 147.

Does this sound correct? Would I see a Big difference moving to a diesel? My buddy just got a saab 93 from the uk and on the drive home he was averaging just under 5l/100km.

Tis a pretty rough time to be changing, but I'd defo consider it if there was big savings to be made.

Gimme some sugar baby!
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Re: Dilema...

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Originally Posted by bobdonny View Post
I have my lovely 2001 156 sportwagon. Its a 1.6l and I'm very happy with it.
It seems I have to change jobs soon and I estimate I will be spending 110 per week based on current consumption levels. I've worked it out at about 12l/100km. Does this sound correct?


I've read that the 1.9jtdm engine is pretty good with avg's of 42.2mpg on the gt and 48.7mpg on the 147.

Does this sound correct? Would I see a Big difference moving to a diesel? My buddy just got a saab 93 from the uk and on the drive home he was averaging just under 5l/100km.

Tis a pretty rough time to be changing, but I'd defo consider it if there was big savings to be made.
That seems a bit high, are you sure everything is ok with it like the MAF and the lambda sensor? This site is handy for working out mpg, liters per km, and cost per km as well.
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(Post Link) post #3 of 38 Old 12-02-09 Thread Starter
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Re: Dilema...

Thanks man thats a great link.
i worked it out at ( 16.37 MPG) ( 5.79 Km per litre)( 17 litre per 100Km)

I have it based on a round trip from cork city to dublin (malahide on the m50 without hitting the city center) so its pretty much motorway and 120kph the whole way.

I reckon that the 1.6l lacks a bit of grunt for the weight of the sportwagon. To maintain 120~ish kph the revmeter is at about 3600~3800.

I'm inclined to believe this is normal, its been serviced well and regularly and this has been the usual performance since I had it.

TBH, I didn't buy the car for its mpg but for its looks... beige leather and dark navy combo
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Re: Dilema...

17 l / 100 km seems to be very high. Wife's 1.6 Focus did 8-9 l / 100km on long trips and my 3l V6 drinks ~ 13 l / 100 km on motorways - and revs just below 3k.

(I bet listening to 3600-3800 revs for hours makes you tired)
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Re: Dilema...

whhhhhhhhhhhhooooooooooooooooooooooooopssssss forgot the return trip!!!

Actual figures are about 27.28 mpg 9.6 kmpL 10.36L / km
I reckon these are more normal but still fairly high in relation to diesel engines..
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Re: Dilema...

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Originally Posted by bobdonny View Post
whhhhhhhhhhhhooooooooooooooooooooooooopssssss forgot the return trip!!!

Actual figures are about 27.28 mpg 9.6 kmpL 10.36L / km
I reckon these are more normal but still fairly high in relation to diesel engines..
Not necessarily for Alfa diesels...
I only get 32mpg from my 2.4 jtdm

You're probably right that 1.6 is a little underpowered for a SW - but not really once you get the speed up on long distance - bigger issue is when ya need to start/stop or even slow down then speed up. That's where the lack of power in the engine would consume a little more fuel. Diesel or, strangely, a more powerful petrol might help there.
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Re: Dilema...

All depends how you drive, I travel 40 miles each way for for everyday on country roads and average 36 mpg in a 2001 1.8 SW.
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Re: Dilema...

hmmm.. having problems with the web page today.....
EDIT - deleted duplicate post
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Re: Dilema...

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All depends how you drive, I travel 40 miles each way for for everyday on country roads and average 36 mpg in a 2001 1.8 SW.
That's my point.. I had 1.8 non-SW and got avg of 35mpg for 15miles each way mixed city/country driving.

If the 1.6 is having to be revved a lot to get up to speed the fuel consumption goes up
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Re: Dilema...

It shouldnt make that much difference though, 27mpg sitting on a motorway at roughly 70 mph in a 1.6 is low compared to my up hill, down dale etc etc but getting 36-38 mpg in a 1.8
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Re: Dilema...

There's little doubt a diesel would be more economical (and more powerful), but how much petrol would the extra cost of purchase of the new car get you?
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Re: Dilema...

Good point, well made
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(Post Link) post #13 of 38 Old 12-02-09 Thread Starter
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Re: Dilema...

this is the thing, I reckon at €110 pw I will spend €5500 PA on petrol if I could half this cost in diesel I would consider that a saving of 10K over a four year period. If I can upgrade to a diesel for less than 10K and keep it for 4 years I will be better off?

Is this sensible or is it me being delusional talking myself into a new car using the credit crunch as justification.....
Maybe I just answered that question
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Re: Dilema...

ok quick calculation on your current 27 mpg and rikd's 32 mpg, if you went to his diesel you would spend 97 euros per week instead of your 110 at the mo, therefore saving 676 euros per year, therefore if you spend 10k upgrading to a diesel it would take you 14 years and 10 months to pay it off

Got my petrol and diesel prices off the net at 1.23/litre for petrol and 1.29/litre for diesel
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Re: Dilema...

is the 2.4 better mpg than the 1.9?
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Re: Dilema...

I agree the 1.6 uses some amount of petrol for the size of the engine, I often regret not buying a 1.8 as it was only about an extra 150€ a year extra insurance for me when I first got insured at 17!.. But I'm a student so what can I do!
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Re: Dilema...

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Originally Posted by bobdonny View Post
is the 2.4 better mpg than the 1.9?
just found these, last figure is urban mpg
Alfa Romeo Brera 2.4 JTDM M 8.1 142 200 179 16 E 30.7
Alfa Romeo GT 1.9 JTD M 9.6 52.3 150 176 15 E 32.5

so looks like not a lot of difference
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Re: Dilema...

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Originally Posted by rafe005 View Post
Got my petrol and diesel prices off the net at 1.23/litre for petrol and 1.29/litre for diesel
Agree with conclusion, but prices are wrong
Todays avg prices form Pumps.ie - Ireland's fuel price website (very good website btw)
Petrol: 102.9c
Diesel: 97.9c
Makes bugger all difference though - only 1k saving. But then lots more power to play with...

Quote:
Originally Posted by rafe005 View Post
just found these, last figure is urban mpg
Alfa Romeo Brera 2.4 JTDM M 8.1 142 200 179 16 E 30.7
Alfa Romeo GT 1.9 JTD M 9.6 52.3 150 176 15 E 32.5

so looks like not a lot of difference
And I believe the 156/159 are pretty similar to these also.
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Re: Dilema...

My 1.4 gets 310 miles to a 10 gallon tank works out about 31 mpg. But when the maf was on the way out it would do 17mpg.
 
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Re: Dilema...

Is there any way to know if the MAF is on it's way out? Except for poor mpg of course.

Cheers
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Re: Dilema...

Ya the car will be very sluggish to rev out and fuel comsumption will go up very slightly. It happend on mine it wasn't a complete failure like it says on the threads here it was very subtle the car would tick over grand most of the time and once in a blue moon it would dip and hunt. Disconnect it bud and see how it revs after that. It should rev out cleanly.
 
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Re: Dilema...

It rev's fine, was just wondering if it could be the reason I go through so much bloody petrol! Guess not, the reason is probably just cause I drive an Alfa like it should be driven..
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Re: Dilema...

Well I drive mine hard and it seems to be grand. Maybe give it more oil and filter services man
 
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Re: Dilema...

Filter and Oil change was done about 4000 miles ago, plan on doing another at about 6000, going to fill up the tank tonight to work it out properly
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Re: Dilema...

I dunno then so you do them as relegiously as me lol.
 
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