Clubjazz - Honda Jazz & HR-V Forums

Honda Jazz Forums => Honda Jazz Mk4 2020 - => Topic started by: edam on May 06, 2021, 04:08:45 PM

Title: Leg room
Post by: edam on May 06, 2021, 04:08:45 PM: I am surprised how much leg room there is in the Mk4 compared to the Mk3. Im over 6 foot and I can nearly straighten out my left leg. This is important as I have been getting knee pain driving the Mk3.
Is this because of the longer wheelbase?
Also it is easier to get in and out as well.
Title: Re: Leg room
Post by: Bristol_Crosstar on May 06, 2021, 07:01:31 PM: Quote from: edam on May 06, 2021, 04:08:45 PM
I am surprised how much leg room there is in the Mk4 compared to the Mk3. Im over 6 foot and I can nearly straighten out my left leg. This is important as I have been getting knee pain driving the Mk3.
Is this because of the longer wheelbase?
Also it is easier to get in and out as well.
I think they've pinched some space from the boot, it's not as deep as it was on my Mk 2 but there's definitely more legroom in the back
Title: Re: Leg room
Post by: John Ratsey on May 06, 2021, 08:30:43 PM: The Mk 3 also had very generous rear seat legroom. It was an advertised feature "better than a Mercedes .... ". I think the reality was that the designers decided that it should be possible to fold the rear seats without removing the headrests. Perhaps, in the Mk 4 they've put a bit more travel on the front seats so that front seat passengers can share the generous legroom.
Title: Re: Leg room
Post by: culzean on May 06, 2021, 08:40:29 PM: Quote from: John Ratsey on May 06, 2021, 08:30:43 PM
The Mk 3 also had very generous rear seat legroom. It was an advertised feature "better than a Mercedes .... ". I think the reality was that the designers decided that it should be possible to fold the rear seats without removing the headrests. Perhaps, in the Mk 4 they've put a bit more travel on the front seats so that front seat passengers can share the generous legroom.

Depends whether people want extra legroom or boot space. The boot on 2002 to 2008 Jazz was bigger than following Jazz models and IMHO had enough rear legroom. When we tried to get stuff we used to get into MK1 boot ( with the cover still over it ) into MK2 boot it would not go in. The changing of the roller blind cover to the hard cover was also a backward step, the roller cover would reduce to a small size - allowing it to be carried easily, and you could overfill the boot, the hard cover does not get any smaller so is always taking up space when carrying stuff, and normally gets left at home when and extra bit of room is needed in boot.
Title: Re: Leg room
Post by: edam on May 06, 2021, 09:16:42 PM: With my knee problem its painful to drive my MK3 CVT but being able to keep my leg straight does stop the pain
Title: Re: Leg room
Post by: jazzaro on May 08, 2021, 08:53:43 AM: MK4 cabin is very similar to the MK3, distance from the brake pedal and the rear backrest is still 211cm and also the boot lenght is moreorless the same (2 cm less for the MK4, 65 vs 67cm). MK4 wheelbase is 1cm shorter due to suspension geometry, but thanks to thicker bumpers MK4 Crosstar is 9cm longer.
The bigger difference comes from the front seats position, 5cm rearwards, so driver and front passenger can have more legroom, but rear passengers will have less.
Title: Re: Leg room
Post by: edam on May 08, 2021, 11:13:40 AM: With the drivers seat as back as far as it would go can the magic seats still fold down flat?
Title: Re: Leg room
Post by: John Ratsey on May 08, 2021, 03:38:34 PM: Quote from: edam on May 08, 2021, 11:13:40 AM
With the drivers seat as back as far as it would go can the magic seats still fold down flat?
I haven't tested this situation but I'm sure that the answer is yes as there's a noticeable gap between the folded rear seats and the back of my drivers seat (which might be half way back). That's how I can get a full-sized by into the car - when the bike is on its side part of the front wheel drops into that gap.
Title: Re: Leg room
Post by: Jazzik on July 23, 2021, 11:35:08 PM: Quote from: edam on May 06, 2021, 04:08:45 PM
I am surprised how much leg room there is in the Mk4 compared to the Mk3.
-/-
Is this because of the longer wheelbase?

I don't think this can be right, the wheelbase of the Mk3 is 2530mm. and the wheelbase of the Mk4 models is 2517 mm.
More legroom in the front can of course be caused by different positioning, shape or adjustment options of the front seats or even the design of the car floor.
Title: Re: Leg room
Post by: jazzaro on July 24, 2021, 12:39:37 PM: Numbers say the MK3 rear legroom is higher than the MK4, maybe due to the battery.
Title: Re: Leg room
Post by: Jazzik on July 24, 2021, 03:58:50 PM: I would suggest: Take a seat and check it out in real life! :D
Title: Re: Leg room
Post by: Jazzik on July 24, 2021, 05:38:04 PM: Quote from: Gamifier on July 24, 2021, 04:08:49 PM
I will buy it online :P

Buying online, okay, fine. But you're not going to buy a car without ever driving it or even sitting in it before you buy, right?

:o

Have you ever seen one in real life?
Title: Re: Leg room
Post by: Kremmen on July 25, 2021, 04:25:12 AM: I now always get a test drive.......

I bought a Citroen C5 blind after having had 3 Xantias. Loved the Xantias but the C5 had electronic suspension instead of hydro pneumatic and they failed to replicate the magic carpet ride. The rear end was rock hard and the boot floor was a wobble board over less than perfect roads, needed something heavy to hold it down.

I then stupidly did the same, changing from a Lexus IS200 to a 07 Civic iShift. I believed the brochure about the iShift being an automatic and I knew within half a mile of collecting it I'd made a huge mistake.

When I took out the Jazz I was expecting some downsizing compromise from my larger 9G Civic but I was very pleasantly surprised. It behaves like a larger car. Yes there was some infrequent engine noise under brisk acceleration but not for long and nowhere near as noisy as a conventional CVT.
Title: Re: Leg room
Post by: Jeff15 on July 28, 2021, 08:24:07 AM: For the size of the vehicle the space inside is amazing, one of the things that was at first a worry was the CVT gearbox but they seem to have sorted CVT problems out now. I am very pleased with my Jazz.
Title: Re: Leg room
Post by: Jocko on July 28, 2021, 09:28:32 AM: MK4 doesn't have a CVT gearbox.
Title: Re: Leg room
Post by: nowster on July 28, 2021, 10:43:10 AM: Quote from: Jocko on July 28, 2021, 09:28:32 AM
MK4 doesn't have a CVT gearbox.

To clarify, the Mk4 doesn't have a gearbox in the conventional sense. It has a fixed ratio.
Title: Re: Leg room
Post by: jazzaro on July 28, 2021, 11:45:20 AM: Quote from: nowster on July 28, 2021, 10:43:10 AM
Quote from: Jocko on July 28, 2021, 09:28:32 AM
MK4 doesn't have a CVT gearbox.

To clarify, the Mk4 doesn't have a gearbox in the conventional sense. It has a fixed ratio.
To be precise and rigorous, the mk4 transmission works with an electric CVT or a fixed ratio, two different modes depending from some working conditions.
Title: Re: Leg room
Post by: Jeff15 on July 28, 2021, 11:53:28 AM: E-CVT is an intelligent transmission that has an infinite number of gear ratios at its disposal. By constantly analysing vehicle speed, road conditions, engine power and driver input, it selects the optimal (most efficient) gear ratio for that precise moment.
Title: Re: Leg room
Post by: Gas Jazz on July 28, 2021, 01:53:01 PM: Jeff15,

From my understanding I believe you have described a conventional CVT rather than the ECVT.

- My understanding from literature and also a video of the transmission being assembled / disassembled at an American Mechanical University is a s follows:

- CVT part of ECVT is a misnomer in the case of the Jazz as the “ constant variability” is governed out side of the transmission in terms of whether you are in EV, Hybrid or Engine drive modes

- The transmission itself has a single fixed ratio gear and a clutch which is engaged when Engine drive mode is required, this is actioned by computer control dependent primarily on load and road speed.

- There are no belts or pulleys in the ECVT to provide variability of final drive ratios like there are in a Toyota Yaris Hybrid for instance.

- The “changing gear” noise when in engine mode I believe is synthetic and will continue to happen as long as you keep your foot down and bears no relationship to a change of ratio.

- The advantage of this system is that the actual transmission has far fewer moving parts etc.

I will be quite happy / grateful to be corrected on any inaccuracies due to my limited knowledge / ignorance.

Having had a (too short) test drive I felt it was probably the worst part of the car in terms of noise v actual acceleration when pressing on but I guess the aim is to adapt driving style to minimise the noise etc.
Title: Re: Leg room
Post by: Deejay on July 28, 2021, 02:55:05 PM: Quote from: Jeff15 on July 28, 2021, 11:53:28 AM
E-CVT is an intelligent transmission that has an infinite number of gear ratios at its disposal. By constantly analysing vehicle speed, road conditions, engine power and driver input, it selects the optimal (most efficient) gear ratio for that precise moment.

That’s a description of how Toyota/Lexus hybrid system works. The Honda works in a quite different way. Most of the time the front wheels are powered by one of the two electric motors just like an purely electric vehicle. The difference is that electric motor is powered by electricity from battery and/or the petrol engine and second electric motor acting as a generator. Only at higher highway speeds does the petrol engine connect with the road wheels through a clutch.
Title: Re: Leg room
Post by: Jazzik on July 28, 2021, 05:42:35 PM: ...and here the e:HEV Hybrid System is perfectly explained. it takes almost 10 minutes but then you know everything!

https://www.youtube.com/watch?v=6glpZTRT6qE
Title: Re: Leg room
Post by: BestwoodRoadie on August 03, 2021, 05:36:47 AM: Quote from: Bristol_Crosstar on May 06, 2021, 07:01:31 PM
Quote from: edam on May 06, 2021, 04:08:45 PM
I am surprised how much leg room there is in the Mk4 compared to the Mk3. Im over 6 foot and I can nearly straighten out my left leg. This is important as I have been getting knee pain driving the Mk3.
Is this because of the longer wheelbase?
Also it is easier to get in and out as well.
I think they've pinched some space from the boot, it's not as deep as it was on my Mk 2 but there's definitely more legroom in the back
Definitely less space in the "boot"
Title: Re: Leg room
Post by: Jeff15 on August 03, 2021, 08:24:37 AM: Good find Jazzik, very informative video. :)