What MPG are you getting from your Mk1 Honda Jazz ?

[Jocko]

Today I had a run to the Royal Infirmary of Edinburgh, and despite over 5 miles of queuing, stop start, traffic, the ScanGauge indicated 60.7 mpg. There was almost 4 miles of traffic trying to get over the Queensferry Crossing. Why they built a bridge with only a dual carriageway when there are two dual carriageways merging at each end, heading North and South, beats me. Other than overnight, there is always slow traffic trying to head North. Must be the attraction of the Kingdom of Fife!

[Jocko]

Filled up again today, once again with 97 octane, and car returned 60.8 mpg. Onboard display was 6% optimistic, with 64.2 mpg
I have now averaged 59.8 mpg over the last 6 fill ups and 2,350 miles.

[mutts nutts racing]

Just picked up my first Jazz today. 02 plate. Just finished a 12 hour day delivering pizza and my dash says 58 mpg. Dead chuffed with that. Been a really pleasure to drive today..... except the 'foggy' headlamps. Hope there is some tips one here somewhere.

[culzean]

Just picked up my first Jazz today. 02 plate. Just finished a 12 hour day delivering pizza and my dash says 58 mpg. Dead chuffed with that. Been a really pleasure to drive today..... except the 'foggy' headlamps. Hope there is some tips one here somewhere.

Many threads on here about cleaning up cloudy headlights,  ranging from taking an angle grinder to them down to toothpaste ....good luck

https://clubjazz.org/forum/index.php?topic=9706.msg54927#msg54927

[Jocko]

I used Windowize, and found it really effective.
58 is a great number for around town. I get my best mpg figures in town, or certainly, in traffic. Be aware that the Fibometer on the dashboard tends to be a bit optimistic.

[Jocko]

I have the ScanGauge E fitted to my car and it displays an average mpg for the current journey, along with the instantaneous mpg.



It is more accurate than the Fibometer as it is calibrated at each top up.

Most of my regular journeys tend to be over the same routes and in pretty much the same sort of traffic. About the only real variable is the weather. As a result I can check my average mpg at known points and it gives me an idea if I am doing better or worse than other journeys.
Today, my wife, who is recovering from surgery, was in the car with me. It has been a while since she has been well enough to accompany me, so most of my trips have been single crewed. What I noticed today, was at all the salient points, my average mpg was not as good as recently. It is what all the mpg forums say. Reduce the weight in the car to get the best mpg. Once she is fully recovered she can start running along behind me.

[peteo48]

I used Windowize, and found it really effective.
58 is a great number for around town. I get my best mpg figures in town, or certainly, in traffic. Be aware that the Fibometer on the dashboard tends to be a bit optimistic.

Interesting about getting best figures in town. I posted on the Mk3 forum about my experiment with 97 RON petrol but another thing occurs to me. Typical journey, for me, is 3.5 miles return to the supermarket with the engine getting cold whilst we do the shop. Now here's the thing. I filled up to take advantage of a 10 pence per litre offer at Sainsburys. After that did 3 more journeys to feed my daughter's cat. This journey is 6 miles return with only a 10 minute stop to give Sam his food. On the fibometer I am showing 56 mpg which is almost certainly a genuine 52.

I can see where you are coming from. Applying usual eco driving techniques although not full hypermiling.

[springswood]

Interested to hear how you get reliable figures from topping up Jocko. I've been logging mine on fuelly but it varies wildly depending when the pump cuts out. Even using the same pump. I'd read you shouldn't fill to the brim in case fuel gets into the charcoal canister for emissions control. But then I think on the Jazz that's under the bonnet and above the level of the filler. Anyone know for sure?

[Jocko]

Filling to the brim means topping off, right up into the neck. I used to do that back in the old days, when filler pipes only had an overflow and no emission controls. I fill to the first click off with my Jazz. My old Cavalier would click off several times during topping up. With that I kept the nozzle in the tank and filled until I got two click offs in quick succession.
springswood: Try that for future top ups and see if that smooths out your numbers.
Also, be aware that unless you do similar journeys every tankful, then you can get varying mpg figures.

[peteo48]

I wait until the first click. I am pretty sure all pumps are slightly different plus minor differences in how hard you squeeze the trigger will mean earlier or later cut offs. That might mean each individual mpg figure might not be dead right but, over time, you will get an accurate average mpg figure.

I could get this by deleting 4 mpg from the fibometer on trip B (which I don't zero) but I like the graphs and pie charts on Fuelly!

[Jocko]

My Fibometer never twice shows the same degree of error. I too like Fuelly, with all the stats it generates.

[springswood]

Thanks guys. My driving is a bit unpredictable (in its mix of long and short journeys) but I've noticed that it takes anywhere from 10 to over 100 miles before the needle moves off full, and this correlates with good or bad figures so I think that's mostly it.

Yes I love all the graphs on fuelly too.

[MartinJG]

I have the ScanGauge E fitted to my car and it displays an average mpg for the current journey, along with the instantaneous mpg.



It is more accurate than the Fibometer as it is calibrated at each top up.

Most of my regular journeys tend to be over the same routes and in pretty much the same sort of traffic. About the only real variable is the weather. As a result I can check my average mpg at known points and it gives me an idea if I am doing better or worse than other journeys.
Today, my wife, who is recovering from surgery, was in the car with me. It has been a while since she has been well enough to accompany me, so most of my trips have been single crewed. What I noticed today, was at all the salient points, my average mpg was not as good as recently. It is what all the mpg forums say. Reduce the weight in the car to get the best mpg. Once she is fully recovered she can start running along behind me.

Absolutely. No room for slackers.

PS - Hope everything is now OK on the health front though.

[Jocko]

Thanks Martin. She has chemo and radiotherapy to go, but she should be finished with surgery.

[MartinJG]

Thanks Martin. She has chemo and radiotherapy to go, but she should be finished with surgery.

Fingers crossed.