Clubjazz - Honda Jazz & HR-V Forums
Honda Jazz Forums => Honda Jazz Mk4 2020 - => Topic started by: AlanTR on May 28, 2022, 01:01:26 PM
-
We recently did a 1012 mile trip from South Tyneside to Cornwall/Devon and back. It was our first long trip in the Jazz Crosstar. Most of the driving was motorway (A1M, M18, M1, M42 and M5) plus dual carriageway and various country roads. We pretty much stuck to the speed limits and for the whole trip we recorded 57 mpg (dashboard display). Having read that 50 mpg was the best you could expect from the hybrid for motorway driving, I was pleasantly surprised.
-
It’s strange - my EX gets 50mpg on the motorway but a loan Crosstar I had was getting 56/57mpg on the same roads.
I would have thought the crosstar would get slightly less mpg being higher.
-
We recently did a 1012 mile trip from South Tyneside to Cornwall/Devon and back. It was our first long trip in the Jazz Crosstar. Most of the driving was motorway (A1M, M18, M1, M42 and M5) plus dual carriageway and various country roads. We pretty much stuck to the speed limits and for the whole trip we recorded 57 mpg (dashboard display). Having read that 50 mpg was the best you could expect from the hybrid for motorway driving, I was pleasantly surprised.
I think that's pretty good. Others have reported that, at a steady 70, mpg suffers but it's likely that your trip included some slower stretches. I think some people can be unduly disappointed by mpg at 70 mph but most cars will give less than optimum mpg at that speed with wind resistance being a big factor.
The strength of the hybrid set up is in town work and lower speeds but it's good to know that you'll get over 50 mpg at high speeds.
-
The first day was 310 miles (South Tyneside to Weston-super-Mare) just about all motorway with free-flowing traffic and we averaged 46.5 mpg. The homeward journey (Dartmouth to M5 and onwards M42/M1/M18/A1M) was 416 miles with quite a few delays.
-
On a trip this week from the UK Midlands to Cornwall on motorways I achieved 55mpg. Average speed shows 60mph
-
Nobody drives exclusively on the motorway.
I come quite close. I mainly only use mine for my weekly trip to a relative.
Leave home, 200 yards to a 50mph dual carriageway.
1 1/2 miles to motorway
27 miles on motorway
2 miles to house
-
And still 61,3 mpg.
-
I almost exclusively drive on the motorway, at least 90+%.
2 miles from the motorway and mos trips ranging from 55-90 miles each way, with only a couple of miles at the other end.
Long term I’m almost exactly 50mpg.
But on the few occasions where I do take country roads I can get 70/75mpg.
-
And still 61,3 mpg.
Yes, I'm very light on the throttle and rarely use the brakes :)
But mainly, I rarely do 70. I'm happy at 60 or so, inside lane.
-
I am an inside lane dweller as well. I don't need the stress of fighting it out in lanes 2 and 3 anymore. I will hit 70 if there's nobody in front of me ;)
-
While 57 mph is what we normally do on A roads... Motorway: ACC on, somewhere between 72 and 78 mph. depending on mood and/or circumstances.
The speed limit on our motorways is 87 mph.
Fortunately (as for our consumption): we drive about 20, maximum 25% motorways. That is probably the reason we still have a consumption of only 4.55 l/100 km = 62.1 mpg.
(https://emojipedia-us.s3.dualstack.us-west-1.amazonaws.com/thumbs/120/toss-face/331/down-left-arrow_2199-fe0f.png)
-
My jazz has just completed 11136 miles in the last 11 months. That included two trips to Italy 600 miles a day so driving quite quick. Returning journey the car was quite full with the back seats down and stuff piled high. A couple of trips from the sussex to Scotland. Again 436 miles each day. I record all fuel I put in and the fuel used over that distance gives 63.2 mpg. Very pleased with that. Much beter that my Volvo XC 60 diesel.
-
Forgot to mention that we always use "ECON" and "B" mode.
"D" mode only when we use the ACC (motorways and dual carriageways).
-
I've been running Econ all winter.
On a trip yesterday the car was in full sun and I had the temp set to 21C. During the trip the cabin was getting hotter and hotter.
Having had this before on 3 Civics I turned Econ off and immediately the cool air kicked in and started cooling the cabin.
Econ definately kills the aircon.
-
Econ definately kills the aircon.
That was something I noticed in other hybrids too, I wasn't able to use econ at all as the cabin became too hot/stuffy.
Jazz recirc air at least seems to let some in, in Toyotas the air just got very stuffy.
-
Just done 8 km (5 miles) without using any fuel at all. :P Easy. Fill the tank at the top of a mountain pass. When it levelled off a bit and used some fuel I was still getting 285 mpg. :-* The downside Going up there were times the engine was working hard and I was only getting 15 mpg :o . Same with a few , erm, enthusiastic' overtakes . But 200 km later, doing 90kph,occassionally more ,it still averaged out at over 80mpg. ;D
This is real world usage. If a truck can get up hill, so can the jazz,with ease. And make the descent without needing B mode for additional engine braking or stressing its brakes. Get real here. Even in the lake district, North wales ,scotland and other hilly places (or indeed the alps)there are not many hills a truck cant climb. A word of warning. ALL cars can overheat their brakes on a long descent if you are not cautious. You walk down a steep hill. If you try and run down you will lose control and fall over. Controlled descent from the top, simples. 1 in 3 and 1 in 4 hills are a bit of a novelty, and rarely very long. Model T fords from the 1910's and 1920's might need to go up in reverse ,which has lower gearing ,but the Jazz will eat them for breakfast and go up no problem at all. . If its a bit noisier than normal for a few minutes,or seconds, in very exceptional circumstances, thats no reason to miss out on is normally exceptional quietness and fuel economy.
Edit .Whoops I may have put this on the wrong post, although still relevant. i have copied it to the 'steep hills' post
-
Yes, the ECON mode does have a drastic effect on the aircon. It's good that it mutes it imo but there will be occasions when you need to turn it off even if only temporarily.
-
We have never experienced any circumstances where the ECON-aircon (https://www.cheesebuerger.de/images/midi/verschiedene/c010.gif) did not cool sufficiently.
We have only had the car since the beginning of September and summer seems (unfortunately) still a long way off, so we'll see.
If necessary we know where to find the button. ;)
-
Twice..? Double..? Why..?
-
I drive with Econ on all the time also drive in B. Even in italy we have never found the Air con not to work sufficiently. We keep the temperature about 21C in the summer and about 22C in the winter. Works very well for us.
-
Hello Folks, what ive noticed as im up to 9000 miles now in the Crosstar after a year, is that the fuel consumption is getting better and better. For the last few tankfuls, im averaging around 65 mpg overall in mixed driving. I drive in D with Econ button on, aircon always on too. Use B on steeper downhills. Delighted with this economy ;D ;D
-
Hello Folks, what ive noticed as im up to 9000 miles now in the Crosstar after a year, is that the fuel consumption is getting better and better....
Warmer weather maybe?
-
Not maybe... definitely! (https://www.cheesebuerger.de/images/midi/verschiedene/c010.gif)
-
Happy with my Crosstar fuel
-
Over 500 miles, my loan crosstar was maybe 3mpg less than my own EX on the same roads and temperatures.
Due to it all mainly being long 70mph cruising, my average is only around 50mpg and the crosstar being slightly bigger with more drag got 3mpg less on the motorway.
(https://uploads.tapatalk-cdn.com/20220604/b61a6be7915e80478fad5a7e860cec2a.jpg)
-
Hello Folks, what ive noticed as im up to 9000 miles now in the Crosstar after a year, is that the fuel consumption is getting better and better....
Warmer weather maybe?
Nope
I see same better fuel economy, i own MK4 from october 2020, this year fuel consumption slightly better.
Now i done 25500km.
-
It's perfectly normal for the fuel efficiency of any sort of IC engine to gradually improve over a reasonable proportion of its typical service life. Friction generally reduces slightly as the engine "beds in" (or wears away if you prefer). Other transmission/chassis parts will also loosen up (driveshaft seals, hub seals and bearings etc). The effects are not usually dramatic, but the odd couple of percentage points is normal.
My personal experience of Honda engines is that they typically improve for at least 20-30k miles. I have 2 Honda motorcycles which I've owned from almost new, and they both run better at 40k miles than when new. One is the NC700 (670cc) which used essentially 2 cylinders with the design taken directly from the then 1340cc Jazz, including some common carry over parts from the car (piston rings, bearing shells etc).
I have no idea how long they will last, others (couriers etc) with these bikes have covered 150k plus miles with them still running fine.
-
.
-
20k to 30k to loosen up.
That'll be years for me then at max 3k per year
-
I have 2 Honda motorcycles which I've owned from almost new, and they both run better at 40k miles than when new. One is the NC700 (670cc) which used essentially 2 cylinders with the design taken directly from the then 1340cc Jazz, including some common carry over parts from the car (piston rings, bearing shells etc).
I have no idea how long they will last, others (couriers etc) with these bikes have covered 150k plus miles with them still running fine.
I worked as a mechanic at a Honda motorcycle dealership in the early 1970's. I soon realised how fantastically well designed and made Honda motorbikes were. Prior to that job, I'd just repeated the mantra, common still, that Japanese bikes were rubbish copies of Brit bikes.
-
.... I soon realised how fantastically well designed and made Honda motorbikes were. ......
It's often said that after the nuclear holocaust the world will be populated by cockroaches and Honda Cub engines.................. bomb proof.
-
Last week early hours Sunday morning came back from Torquay to Nottingham got on the A380 , M5 , M42 , A42 , M1, set the speed at 75 mph nothing on the roads, speed never varied on the dash when I got home it read at 54.7 mph. Pretty good I thought.
-
20k to 30k to loosen up.
That'll be years for me then at max 3k per year
Don't you ever just go out for a drive?
If I was only going to do 3k a year I would've bought something more 'exciting' for the few times I would be behind the wheel and definitely not a new car.
-
Last week early hours Sunday morning came back from Torquay to Nottingham got on the A380 , M5 , M42 , A42 , M1, set the speed at 75 mph nothing on the roads, speed never varied on the dash when I got home it read at 54.7 mpg. Pretty good I thought.
-
Last week early hours Sunday morning came back from Torquay to Nottingham got on the A380 , M5 , M42 , A42 , M1, set the speed at 75 mph nothing on the roads, speed never varied on the dash when I got home it read at 54.7 mph. Pretty good I thought.
Considering unleaded is cheaper than diesel, the equivalent mpg for a diesel to compete on cost would have to be higher, so it’s a good figure.
50-55 beats my diesel that didn’t get above 50.
-
20k to 30k to loosen up.
That'll be years for me then at max 3k per year
Don't you ever just go out for a drive?
If I was only going to do 3k a year I would've bought something more 'exciting' for the few times I would be behind the wheel and definitely not a new car.
I've been buying new cars, every 3 years, and less on a couple of occasions since 1983 at circa 30k miles on each. My first break from this was 2016 when I'd retired and my 9G Civic was only on 11k so decided to keep it as I liked it. Plus at that time the 9G new Android headunit was having serious problems.
When the Civic was nearly 9 years old I wanted to downsize it and get more modern tech. It made sense to get a Jazz, a decision I've not regretted.
I have the full 5 year package and when that's expired I may not need a car as mine is now only used to visit relatives and a move to be near them is on the cards.
I don't now get any pleasure from driving for the sake of it living in greater London. The standard of driving near Heathrow is atrocious and heavy traffic is the norm during the day.
-
...Not exactly rolling hills and country lanes as such then by you. I don't blame you for giving it a miss then ;D
-
20k to 30k to loosen up.
That'll be years for me then at max 3k per year
Don't you ever just go out for a drive?
If I was only going to do 3k a year I would've bought something more 'exciting' for the few times I would be behind the wheel and definitely not a new car.
I've often thought about this given my low mileage but, given my age, a performance motor would now be wasted on me. The other thing is I genuinely don't like big cars - not on any environmental ground but I prefer something small and nippy.
-
According to an online fuel calculator, a Jazz doing 54mpg for 10,000 miles costs around the same in fuel as a diesel car doing 60mpg.
https://www.which.co.uk/reviews/new-and-used-cars/article/driver-calculators-and-tools/petrol-vs-diesel-calculator-aq1aI3j7Pkm7
-
I don't now get any pleasure from driving for the sake of it living in greater London. The standard of driving near Heathrow is atrocious and heavy traffic is the norm during the day.
I know what you mean. Moving away from the South-East of England was one of the better things my wife and I have done.
-
Refuelled yesterday and its the first I have had to spend more than £60 to fill the tank (it was down to 2 bars)
The display tells me that the range is 541Miles, which works out at 11p per mile, it will be interesting to see whether that is true?
-
Refuelled yesterday and its the first I have had to spend more than £60 to fill the tank (it was down to 2 bars)
The display tells me that the range is 541Miles, which works out at 11p per mile, it will be interesting to see whether that is true?
Probably not far off, even with mainly motorway driving at 50mpg I only pay around 15p a mile currently.
My range is normally 420 or so on a full tank.
Unless the car has been reset after having the battery disconnected - then it usually shows 660 mile range until it learns that driving is mainly motorway.
It must have a default mpg range figure it uses on resets as it's happened a few times now after being reset.
-
Last week early hours Sunday morning came back from Torquay to Nottingham got on the A380 , M5 , M42 , A42 , M1, set the speed at 75 mph nothing on the roads, speed never varied on the dash when I got home it read at 54.7 mph. Pretty good I thought.
That's excellent. I get 50 mpg in my mk2, but being far more careful, particularly on the motorway.
-
With my majority motorway driving, I've tried eco mode/slow acceleration/etc - it doesn't make hardly a difference on a long trip at 70mph so you can drive the car normally and you will still get great 50+mpg economy.
-
With my majority motorway driving, I've tried eco mode/slow acceleration/etc - it doesn't make hardly a difference on a long trip at 70mph so you can drive the car normally and you will still get great 50+mpg economy.
-
With my majority motorway driving, I've tried eco mode/slow acceleration/etc - it doesn't make hardly a difference on a long trip at 70mph so you can drive the car normally and you will still get great 50+mpg economy.
It's average speed that makes the difference - I'd like to see someone get 60+mpg with the ACC set to 70mph over 50-100 miles.
-
With my majority motorway driving, I've tried eco mode/slow acceleration/etc - it doesn't make hardly a difference on a long trip at 70mph so you can drive the car normally and you will still get great 50+mpg economy.
There answer why we have bad mpg on high speed.
Our MK4 and Nissan Note E-power have same type transmission but e-power only serial hybrid (ICE never linked to whells) both cars like EV with little battery pack with onboard generator.
If someone not intrested in whole video clip about Nissan Note e-power skip to 3:20 from start
It's average speed that makes the difference - I'd like to see someone get 60+mpg with the ACC set to 70mph over 50-100 miles.
-
It's also why many manufacturers range figures for fully electric vehicles are wrong.
Matt Watson in his reviews tells you what energy the car is using at 70mph, and what your range would be at that consumption - much less than the official figure.
As I've found with the Jazz, for the type of driving I do, I get nowhere near the official mpg/mpkw figures that are published.
As a rough guideline, for the driving I do, I can get maybe 50% of the official range of an electric car.
50mpg for a Jazz at 70mph is still good, compared to 30mpg for my accord and mid/high thirties for my civic.
-
As I've found with the Jazz, for the type of driving I do, I get nowhere near the official mpg/mpkw figures that are published.
As a rough guideline, for the driving I do, I can get maybe 50% of the official range of an electric car.
50mpg for a Jazz at 70mph is still good, compared to 30mpg for my accord and mid/high thirties for my civic.
The headline "combined" WLTP fuel economy can be misleading but the individual test cycle data seem to be close to real life (in warm weather). For example, the "high" WLTP cycle for the Mk 4 Jazz gets 72.4 mpg which drops to 47.9 mpg in the "extra-high" cycle (up to about 75mph). I can't see find a similar level of detail in the WLTP EV testing but agree that motorway cruising will hit the range massively (how much depends on the drag factor of the individual vehicle).
-
So my Mk4 continues to surprise me with just how good it is, in this case through ridiculous fuel mileage.
My normal commute into London involves a 45 mile drive of which roughly half a mile is on something other than dual carriageway or motorway. As those motorways are the M1 and M25 it's fair to say this is not constant speed cruising unless you count zero as a constant speed. Just finished up a 415 mile drive (4 days in the office and some around town driving) with the car showing an average of 69.7mpg with 157 miles remaining on three and a bit bars! The actual real world figure after refuelling was about 68mpg.
That's mostly driving between 50 to 70 mph, occasional blasts from the climate control with AC off and the infotainment constantly on running Apple CarPlay. Same drive when I was being gentle on the throttle in a 2018 diesel Civic would come in around 65mpg. All things considered I'd say the Jazz was doing remarkably well, very glad I made the switch when I did!
-
My record was a motorway trip of around 30 miles, where is got 75mpg.
Thanks to traffic and a long 50mph section. Even though it was starting from cold, it was last summer so temperatures were warm.
-
Most of my driving is short, urban trips - usually a weekly run round to local supermarkets. Occasionally, a 60 mile round trip into the Derbyshire Peak District.
My Trip A shows 60mpg since new, and Trip B currently 66.6mpg since refueling (a little less than half a tank left). However, I also keep a spreadsheet where I note the total mileage at each fill up and the litres put in the tank (brimmed). This calculates an actual value of 57.14mpg overall. My Crosstar was bought in September last year so a lot of the miles covered were through the winter months.
The mpg has improved somewhat with the warmer weather, but as I always have the climate control set to Auto at 21.5 degrees C I suspect that's having a negative effect. I know a lot of owners use aircon sparingly, but I prefer to be comfortable rather than worrying about the extra fuel useage.
-
Same here
I don't get the 'advice' to turn off aircon and open the windows. I bet it saves pennies and I prefer aircon and windows shut for the quiet.
Unlike the hot hatch mob with max thumping audio and all windows open, innit
-
With the new gas they use in aircon today, it leaks out much quicker.
Not using the aircon for a while could likely result in it escaping.
The cost for a top up is £160-£300 with the new gas, so would cost more than any small amount of fuel saved by not using it.
I just leave my climate control on auto all the time.
-
Same here
I don't get the 'advice' to turn off aircon and open the windows. I bet it saves pennies and I prefer aircon and windows shut for the quiet.
Unlike the hot hatch mob with max thumping audio and all windows open, innit
Comfort (& safety) is more important to me than fuel economy so I use the A/C when I need to. I am sure I read years ago that driving with the windows open increased drag which impacted fuel economy........
-
I'll be driving my new to me 21 Jazz EX overnight, to avoid traffic, from Taunton to Vienna next month. It will be a great test of the Jazz's economy at 70 Mph for a 1,000 motorway miles. I'm betting it'll do the journey more frugally than my BMW 1250 motorcycle, we will see.... 8)
-
Over 15k of mainly motorway miles I’m getting around 50mpg on the motorway at 70mph which is good considering the performance as well.
I plan to try dropping from 70 to 55-60 on a regular 110 mile trip I do soon, just to see what the difference in fuel economy is.
Fuel is now getting close to £2 a litre and a few minutes longer travel time won’t matter if there is a big jump in mpg.
-
Over 15k of mainly motorway miles I’m getting around 50mpg on the motorway at 70mph which is good considering the performance as well.
I plan to try dropping from 70 to 55-60 on a regular 110 mile trip I do soon, just to see what the difference in fuel economy is.
Fuel is now getting close to £2 a litre and a few minutes longer travel time won’t matter if there is a big jump in mpg.
If you're happy rolling along at 55 - 60 you might be pleasantly surprised. I've done 600 miles since my last brimmed tank. I was aiming to see whether a 1000km was possible but the range displayed started going down much faster than the distance covered so I'm going to end up about 10km short.
The fuel economy since filling is showing as 78mpg. (B + Econ, a lot of 57-59mph driving with occasional bursts of extra speed while overtaking.)
-
Proof that a light right foot pays off...
Consumption Crosstar at high(er) speed, here just over 40 km (almost 26 mi), at an average speed of 129 kmh (80.2 mph). Consumption: 6,6 l/100 km (42.8 mpg).
The same but 13 km (8.1 mi), average speed 137 kmh (85.1 mph) Consumption 7,3 l/100km (38.7 mpg).
-
18 month old crosstar, 9500 miles.Mainly urban - round the back roads of south Somerset, Some odd trips - 250 miles - generally travel to road conditions - but very rarely go above 65 - more like 60 MPH.No motorway - dont need them - odd duals. Sometimes cruise control. Very light foot on throttle. ECO always on, air con always on - only open windows if roasting before setting off. Set to 20 degrees +/-1. EV shows around 70 % time in local area. Can show EV up to and above 60 MPH - for some long periods - but generally shows upto 50 MPH. MPG shows 63 - 67 - after the computer catches up. Get approx 550 per tank refill (not necessarily filling an empty tank.) Brake hold always on. Beeps - depends on my mood!!. I get what I expected , after the first miles of running in. MPG drops in winter - the ICE is used to heat the car, and needs to charge thinks up. And as I say most of my journeys are local - so she really done get going.
-
MPG shows 63 - 67 - after the computer catches up.
Keep in mind that the board computer indicates consumption on average about 5% too favorable. That is my experience when I compare what the board computer shows and what the actual measured consumption is. That would mean your actual consumption is somewhere between 60 and 63.5 mpg. Not bad!
-
Here’s the results from my test from a 58 mile mostly 70mph journey I do regularly:
Normal driving at 70mph using acceleration - 1 hour , 50mpg £10.10 cost
Maximum speed 55-60mph and only gentle acceleration - 1 hour 10 minutes, 62mpg £8.10 cost
So, an extra 12mpg and a saving of £2.
However, as I drive in the busy times I won’t be doing it again as £2 is worth it for safety.
Apart from lorries you are the slowest thing. Even though vans should only be doing 60 they actually do 80 and you are swarmed.
I even had someone in a Yaris hybrid flash me for doing 61 in a 70 limit before they zoomed off into the distance at 80!
Although I did see one suv only doing 45-50mph.