What do you get from yours ? My S2 Cab when I just filled it and divided the miles by the gallons came up with 21.16 MPG average, not been doing a lot of long journeys in it, it has been cold and work is only seven miles and a lot of knocking about urban, one or two longer journeys but am not disappointed with that, sort of what I expected and not really any worse than the Saab I just got rid of to get this, expect it may, like the Saab hit 30 mpg if gentle and I do longer journies !
MPG ?
- Thread starter J4CKO
- Start date
Fat Albert
New member
To put it another way, when I was doing the 8 miles each to the station I would get around 280 miles to a tankful, now I do longer journeys I normally get 380 miles to a tankful, and in summer (with the lights down!) I once got 435!
pauljmcnulty
Active member
Two thoughts.
I can get 30 MPG from the S2 if I drive it carefully. That easily falls to nearer 20 MPG if I'm letting rip. There's a real difference between thrashing it and more relaxed use that I didn't get with the Lux. My van has about 10% difference between driving it like I'm wearing a hat and driving it like it's stolen, so the S2 is definately more sensitive to driving style in my experience.
Secondly, fuel lines are likely to be leaking if they aren't new on any 944 now, and the caliper corrosion on S2s and turbos will cause the brakes to bind. When my brakes were sticking on I got 15 MPG from a tankfull, so it's worth checking both these areas if you're only getting just over 20 MPG.
I can get 30 MPG from the S2 if I drive it carefully. That easily falls to nearer 20 MPG if I'm letting rip. There's a real difference between thrashing it and more relaxed use that I didn't get with the Lux. My van has about 10% difference between driving it like I'm wearing a hat and driving it like it's stolen, so the S2 is definately more sensitive to driving style in my experience.
Secondly, fuel lines are likely to be leaking if they aren't new on any 944 now, and the caliper corrosion on S2s and turbos will cause the brakes to bind. When my brakes were sticking on I got 15 MPG from a tankfull, so it's worth checking both these areas if you're only getting just over 20 MPG.
I average around 28 - perhaps a smidge over (28.6, to be precise.) That's an S2, with a variety of driving but mostly around town.
At the risk of starting a debate, that's on Super Unleaded which improves the MPG by around 10% (buying cheaper fuel is a false economy.) That equates to between 350 and 400 miles to a tankful.
Best was just under 500 miles to a tankful; driving back from France, on a long smooth (fast) run, with very little slowing or stopping.
Oli.
At the risk of starting a debate, that's on Super Unleaded which improves the MPG by around 10% (buying cheaper fuel is a false economy.) That equates to between 350 and 400 miles to a tankful.
Best was just under 500 miles to a tankful; driving back from France, on a long smooth (fast) run, with very little slowing or stopping.
Oli.
Wouldn't it stink of petrol if it were leaking fuel, my Saab had a pinhole in the fuel filter and that was very obvious as there was a petrol smell every time I got in/out of the car but will have a sniff/look around, come to think of it I have had a waft around the boot area, will have a look if the brakes are binding but again, wouldn't that stink of hot brakes ?
Am thinking the main use being a seven mile commute each way in the winter isn't the best way to get economy, my Saab did a very similar figure, the Urban figure for an S2 is about 21 MPG.
pauljmcnulty
Active member
That is all true. I'm largely throwing in all possibilities for the benefit of other people.
This forum has around 1000 944 owners, or potential owners, registered, but probably only one in ten posts. Hence me often pointing out the obvious options at the risk of upsetting the regulars who've heard it all before! [
]When my fuel lines on the S2 were borderline they didn't actually smell, or leak very much. On the previous car it was "empty tank, thought I filled up yesterday? What's that smell, I can't see in the dark. Has anyone got a match?" Exaggerating for effect, but it really was squirting fuel out.
Brakes? Mine were terrible, RPM said they were about as bad as they'd ever seen. There was no smell, just obvious binding when it was really bad towards the end. As in you didn't need the handbrake on anything other than 1-in-3 slopes. [
] When I bought the car I was advised they needed attention, so the two years in between was a progressive decline. I'd guess I was losing a lot in mileage from the binding brakes before they became so bad it was really noticable, so worth checking.
Copperman05
New member
I managed 26.5mpg over nearly 3000 miles driving through Europe last year, lowest I returned between fills was 25mpg but that included 120mph+ runs on the autobahn and some spirited drives across the Swiss passes. Unlike Paul I find the difference between driving hard and easy, at least on the motorway isnt that great maybe just a few mpg, I always use premium fuel too.
Best mpg I've managed was 32mpg on run to Cornwall, motorway and little traffic all the way. I suspect that when pushed hard these cars do 18-20mpg but I've not seen these figures out of a whole tank.
Edd
Best mpg I've managed was 32mpg on run to Cornwall, motorway and little traffic all the way. I suspect that when pushed hard these cars do 18-20mpg but I've not seen these figures out of a whole tank.
Edd
bmnelsc
New member
On a road trip through the Rocky Mountains (Edmonton, AB to Vancouver, BC and back) I averaged 32mpg (converting litres to gallons and kms to miles but I'm old so this is what makes sense to me[8|]). While it is lots of mountains, speed limits are quite low in BC (often 80 or 90 kph) although I consider them guide lines []. I was actually running around 130-140kph most of the time.
I haven't really bothered with urban mileage as traffic density, mood of the driver, etc create wide swings in fuel economy. By the way - I believe our fuel is pretty poor compared to yours. Unleaded only - leaded fuel is no longer available for road use in Canada. Here is what PetroCan (one of the major providers) says about their fuel:
91 Grade - no ethanol (Premium fuel - regular is 87 and mid-grade is 89)
RON 97.2
MON 85.6
With ethanol the RON bumps up to about 101 although IIRC ethanol up to 10% is only tolerated and not recommended even for my '08 Infiniti.
]. I was actually running around 130-140kph most of the time.I haven't really bothered with urban mileage as traffic density, mood of the driver, etc create wide swings in fuel economy. By the way - I believe our fuel is pretty poor compared to yours. Unleaded only - leaded fuel is no longer available for road use in Canada. Here is what PetroCan (one of the major providers) says about their fuel:
91 Grade - no ethanol (Premium fuel - regular is 87 and mid-grade is 89)
RON 97.2
MON 85.6
With ethanol the RON bumps up to about 101 although IIRC ethanol up to 10% is only tolerated and not recommended even for my '08 Infiniti.
Ewan
New member
Took my turbo for a blast on Saturday, and try as I might I still can't get the MPG to a figure anywhere near as low as my 6.0 lt Diablo or my Supercharged Range Rover. Which is good news. And it'll certainly go further than my 996 - which has a tiny tank given it's "everyday sportscar" billing.
George Elliott
New member
376 miles and the low level light is not on yet.
George
944t
George
944t
Still getting rubbish MPG.
I changed the Lambda sensor, didn't make any difference, the brakes don't seem to be binding, I drove all the way to work at pace without braking and the wheels and calipers were all stone cold. Will have a look at the fuel lines, my Saab was leaking from a filter but it didnt really affect mpg much and it stank.
Other thoughts are temp sensors, could the one that feeds the ecu be duff and be feeding "cold" signals to the ecu ?
I do give it some stick sometimes but not all the time, is it just by virtue of the short journies, just feel that it should be better given the decent economy others report, my Saab was very similar MPG wise, so it may just be me !
I changed the Lambda sensor, didn't make any difference, the brakes don't seem to be binding, I drove all the way to work at pace without braking and the wheels and calipers were all stone cold. Will have a look at the fuel lines, my Saab was leaking from a filter but it didnt really affect mpg much and it stank.
Other thoughts are temp sensors, could the one that feeds the ecu be duff and be feeding "cold" signals to the ecu ?
I do give it some stick sometimes but not all the time, is it just by virtue of the short journies, just feel that it should be better given the decent economy others report, my Saab was very similar MPG wise, so it may just be me !
George Elliott
New member
If the brakes bind they bind off as well as on, and the car will steer badly (pull) and brake badly (pull left/right). What the brakes are doing really is sticking - where they don't return to off when the pedal is released.
As stated above, this can cause drag and reduce fuel efficiency, but if it was severe the disc's would be roasted.
If the fuel lines leak, the car will potentially do zero mpg, just wait long enough [8|]
I get about 26 to 28 from a turbo in general use, ave journey 12 miles and an s2 should better that with its higher compression, higher torque, lower rev character.
Jacko, I would look at the following:
fuel quality - agree with Oli
air filter element
fuel injector spray pattern - try injector cleaner
spark plug condition
tyre pressures
wheel tracking
cat - ditch if applicable
thermostat (if stat weak / open engine will run too cool and inefficient) - as my old 951
ecu chip - some genius may have changed this
If that does not work, check the compression as there must be wear causing poor efficiency.
It should be better than a Slab vectra.
just my two penneth, keep us posted
good luck
George
As stated above, this can cause drag and reduce fuel efficiency, but if it was severe the disc's would be roasted.
If the fuel lines leak, the car will potentially do zero mpg, just wait long enough [8|]
I get about 26 to 28 from a turbo in general use, ave journey 12 miles and an s2 should better that with its higher compression, higher torque, lower rev character.
Jacko, I would look at the following:
fuel quality - agree with Oli
air filter element
fuel injector spray pattern - try injector cleaner
spark plug condition
tyre pressures
wheel tracking
cat - ditch if applicable
thermostat (if stat weak / open engine will run too cool and inefficient) - as my old 951
ecu chip - some genius may have changed this
If that does not work, check the compression as there must be wear causing poor efficiency.
It should be better than a Slab vectra.
just my two penneth, keep us posted
good luck
George
craiginuk
Member
Seem to get around 21-22 mpg around town. Short trips, school run etc. Did 29 mpg on a return trip to bristol with a nice clear road averaging about 80 "insert units here" per hour. Best I have ever achieved is 33 mpg on a gentle 280 mile round trip with a lot of 50 mph roadworks. 87 turbo.
fuel quality - agree with Oli
Just filled up with Shell Normal Unleaded, migth try VPower next time but forgot this time.
air filter element
Yep, might buy a new one, probably a K and N
fuel injector spray pattern - try injector cleaner
Yep, or might get them ultrasonically cleaned
spark plug condition
Will whip one out and have a look, perhaps stick a new set in, previous owner was pretty fussy about things like that.
tyre pressures
36 all round, checked them the other day
wheel tracking
Possible culprit, will get it done
cat - ditch if applicable
Yes, would like, will see if I can get a bypass pipe
thermostat (if stat weak / open engine will run too cool and inefficient) - as my old 951
Possibly, looks like an arse to change, seems to run at a decent temp, the needle is just above the lower mark, in traffic it gets up to the top one and then the fans kick in
ecu chip - some genius may have changed this
Ahem, couldnt possibly comment
its been better with the chip in based on the 23 mpg !If that does not work, check the compression as there must be wear causing poor efficiency.
Doesnt seem to be any back pressure and it pulls well, if it is that then I can live with the mpg versus an engine rebuild !
It should be better than a Slab vectra.
just my two penneth, keep us posted
good luck
George
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