Author Topic: 29 mpg in 100% urban environment. Is this normal or what should I check?  (Read 2107 times)

J@zzy

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Got 29 mpg in 100% urban environment with all traffic jams. Tyres pressure is OK, eco button is on, brakes do not overheat (so no unwanted contact with disks), dashboard lighting is green, not blue most of the time, I accelerate and decelerate slowly but still 29 mpg. Is this normal or what are the obvious things to to check?

EDIT: The gearbox is CVT.
« Last Edit: December 16, 2017, 08:45:41 AM by J@zzy »

Pumpkin

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Re: 29 mpg in 100% urban environment. Is this normal or what should I check?
« Reply #1 on: December 16, 2017, 01:23:09 AM »
I'd say it's normal. I drive 50/50 on urban and fast roads and I get 38mpg, although mine is an auto.

Hillhead

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Re: 29 mpg in 100% urban environment. Is this normal or what should I check?
« Reply #2 on: December 16, 2017, 08:00:59 AM »
Auto or manual, lots of short journeys?
The fuel consumption of my CVT goes up dramatically as the temperature drops, especially on short journeys.

J@zzy

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Re: 29 mpg in 100% urban environment. Is this normal or what should I check?
« Reply #3 on: December 16, 2017, 08:52:14 AM »
Auto or manual, lots of short journeys?
CVT and average journey is couple of miles.

Jocko

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Re: 29 mpg in 100% urban environment. Is this normal or what should I check?
« Reply #4 on: December 16, 2017, 09:17:12 AM »
I have a ScanGauge fitted to my Mk1, and what you are getting is similar to what I see during short urban journeys, at this time of the year.

d2d4j

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Re: 29 mpg in 100% urban environment. Is this normal or what should I check?
« Reply #5 on: December 16, 2017, 09:20:02 AM »
Hi

I hope you donít mind, but having read j@zzy post, I have a question

Does the dashboard lights change colour depending on how you drive

Itís just jazzy stated dashboard lights are green and not blue

Many thanks

John

Jocko

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Re: 29 mpg in 100% urban environment. Is this normal or what should I check?
« Reply #6 on: December 16, 2017, 10:27:14 AM »
The 67 plate Jazz I had on loan had a section of the dashboard which lit up a different colour depending on how I was driving. Assume it is an eco monitor.

Kenneve

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Re: 29 mpg in 100% urban environment. Is this normal or what should I check?
« Reply #7 on: December 16, 2017, 10:41:23 AM »
I can confirm that (on a Mk3 EX)  the lights do indeed change from green to blue, depending on your style of driving.

trebor1652

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Re: 29 mpg in 100% urban environment. Is this normal or what should I check?
« Reply #8 on: December 16, 2017, 11:15:31 AM »
Yes modern day version of a vacuum guage.

Sent from my XT1039 using Tapatalk


peteo48

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Re: 29 mpg in 100% urban environment. Is this normal or what should I check?
« Reply #9 on: December 16, 2017, 01:56:38 PM »
My record low is 33.8 over around 250 miles (when I normally refuel). At points I reckon my consumption will have dipped below 30 mpg  and is only balanced out by a few longer trips.

The old boy across the road from me reckons he hasn't seen 30 mpg for years! He has a 1.8 Civic which replaced a 1.6 Focus. He rarely does more than 3 miles a day all in town traffic.

PS

Above figure "achieved" in winter.
« Last Edit: December 16, 2017, 01:58:36 PM by peteo48 »

madasafish

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Re: 29 mpg in 100% urban environment. Is this normal or what should I check?
« Reply #10 on: December 16, 2017, 02:00:40 PM »
My average urban is 42mpg . BUT my average journey is 6-10 miles.

On cold weather and 2 mile journeys, then 32mpg..at most

Jocko

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Re: 29 mpg in 100% urban environment. Is this normal or what should I check?
« Reply #11 on: December 17, 2017, 04:41:29 PM »
Today, I covered 100 miles on mainly dual carriageways, wet roads, temperature about 6įC, two up. According to my ScanGauge E, I averaged 49.3 mpg, but on level roads, light throttle, and 40 - 50 mph, I was struggling to get the instantaneous mpg above 35. I was using my best hypermiling techniques, with little success. It is like driving through treacle. Wet roads and cold tyres are the death of fuel efficiency. 29 mpg in urban traffic and with short trips is pretty good at this time of the year.

peteo48

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Re: 29 mpg in 100% urban environment. Is this normal or what should I check?
« Reply #12 on: December 17, 2017, 05:50:48 PM »
The other thing I would mention is how different in this respect petrol cars are to diesels. My 2 diesels - both VW 1.9 TDIs didn't show the same swings from summer to winter. A low of about 45 mpg in the winter (tank to tank) going up to about 52 mpg in the summer. As I said above my lowest in a Jazz has been 33.8 over a tank but I did get 56.2 in May last year so nearly 23 mpg difference.

Jocko

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Re: 29 mpg in 100% urban environment. Is this normal or what should I check?
« Reply #13 on: December 17, 2017, 06:05:19 PM »
The figure shown below my avatar is my average mpg figure since buying the car, 18 months ago, courtesy of www.spritmonitor.de where I record my mileage figures.

rogbro

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Re: 29 mpg in 100% urban environment. Is this normal or what should I check?
« Reply #14 on: December 18, 2017, 09:08:10 PM »
Wow!!! I don't think that's very good MPG for a Jazz.   Our last car, Mini coopers S,  200+ bhp returned 28 mpg urban

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