What MPG are you getting from your Mk1 Honda Jazz ?

[Jocko]

So far, on my current tankful, I have done 245 miles. The Fibometer is saying 66.5 mpg. Not that I believe it though.
I only do shorter journeys (no more than 100 miles in a day), and fuel gauge never seems to move. However, when I switch ignition on the next day, it will have dropped a bit. Anyone else noticed this?

[Outcasst]

I typically get around 45MPG. Mix of Urban and countryside roads.

[Jocko]

Welcome, Outcast. My mileage, mix wise, is similar. I find country roads great for mpg. Motorway, the worst.

[Jocko]

My mother-in-law is not keeping well, in fact she was readmitted to hospital yesterday, so I have been doing regular runs over to the south side of Edinburgh. I topped up today, slightly earlier than I would like at 452 miles, and the calculated mpg was 65.5. The Fibometer said 62.9 and my ScanGauge was wildly pessimistic at 58.2. I must have input a wrong calibration value when I did my previous top up to put it as far out as that!

[sparky Paul]

My mother-in-law is not keeping well, in fact she was readmitted to hospital yesterday

Sorry to hear that Jocko, hope you're all okay.

Keep up the mpg. I think we talked about this before, but I noticed in particular that the gauge dropped when the car was parked on the drive, which is a uphill slope.

[culzean]

My mother-in-law is not keeping well, in fact she was readmitted to hospital yesterday,

It seems with problems it never rains but it pours, hope everything works out OK...

[Jocko]

Today I had an unexpected run from Kirkcaldy to Danderhall. Set off about noon, and the traffic for the first half of the journey was light so I was not constrained by keeping up with traffic. Twice, between Kirkcaldy and the M90 at Rosyth, I managed to pop 70 mpg on the ScanGauge Current trip display. Wind and tide were obviously with me. Once I hit the M90. M8 and A720 things changed, and by Danderhall the average was down to 64 mpg.
Mind you, the return journey was a nightmare with a 3 mile stretch in 1st gear! Traffic was murder until I crossed the QFC bridge.

[Jocko]

Thought I would share a picture of my Fuelly page.


As you can see I have now averaged 59.9 mpg for the past 10 top ups. Almost 4,000 miles

[peteo48]

Great stuff Jocko. Are you in a position to ascribe this to your 97 Octane experiment yet?

[Jocko]

I was getting 60 mpg from the couple of tankfuls before I changed. I think it is more to do with the miles I am doing at the moment. I am running between Kirkcaldy and Danderhall, just about every day. About an 80 mile round trip. I have had to increase my annual mileage for my insurance!

[springswood]

Looks like my fuel consumption has suddenly improved. A month ago a busy weekend of motorway and A road miles gave a dash reading of 47+ over 300 miles. Since I topped up this weekend I've done 150 miles, again mostly A roads and motorway and it's showing 52+ Between I did my usual driving which gave the low 40s figures I've had all along.

I've never seen such good figures in 10 months. Instant readings from the OBDII via my phone suggest the improvement is mostly at steady speeds especially around 30 to 40 mph. I've long wondered if some part of the emissions control was gunked up so perhaps something's working again. The other possibility is I did have to top up with BP 95 fuel rather than supermarket stuff. If that was the cause then it'll be cheaper to stick with it.

I hope to find out after the next tankful, though at this rate it may take longer than usual 

[Jocko]

That looks good. It will be interesting to see what your Fuelly figures show.

[Michaelflat1]

I get between 45 and 55 on my 1.4 SE...

B roads the car likes more than A roads, wish it had a 6th gear.. even giving it some stick and having some fun it can return 48-49mpg it is really a nice cheap way to have fun

[Jocko]

B roads the car likes more than A roads, wish it had a 6th gear.

My findings, exactly.

[springswood]

6th would be nice. I notice the early 1.4 Civics with the iDSi engine have six gears. I don't suppose you could put one of those in a Jazz?

In other news Fuelly can't tell me about my recent mpg. It came out at 38.3, but then after 100 miles the needle still hasn't come off the end stop! Back to supermarket fuel and the usual shorter trips and the dash mpg meter shows 42.something. Might as well bung BP in next time, just in case.