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Honda Jazz Mk3 2015-2020 / Re: Moving from a Mk1 Jazz

« Last post by Lord Voltermore on May 23, 2026, 08:59:33 AM »

Whoops. Sorry . I had thought  the mk 3 could screen mirror a mobile phone using  a hard wired usb lead.   I must stop pontificating on subjects I dont fully understand,especially on cars I have never owned.      
But I can say from experience that  I personally find satnavs very useful, even if you have to mount the phone/satnav as a standalone  screen.  I can imagine a Navi  mk3 would be a bit of a bonus, but not essential. 

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Honda Jazz Mk3 2015-2020 / Re: Moving from a Mk1 Jazz

« Last post by langserve on May 22, 2026, 07:30:48 PM »

I agree, I found no way to display a phone app on the car's screen. I bought a discreet navigation unit and mounted the holder on the dash. It integrates with the phone and only takes a couple of minutes to mount and plug in if I have a longer or more complicated trip. Mostly, just the phone is as much as I need though.

One of my cars is a CVT automatic and the other a manual. The CVT gets slightly better economy (maybe my driving style with manual?) and if I had a choice it would be CVT every time. It works extremely well especially on hills and I don't mind that very slight delay on taking off at quickly. I don't do it much any anyway you are not going to win any races with this car. I just enjoy the relaxed driving style CVT makes possible - who wants to think about what gear will be needed next? CVT, for me, is a much more refined and better technology.

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Honda Jazz Mk3 2015-2020 / Re: Moving from a Mk1 Jazz

« Last post by ColinB on May 22, 2026, 03:38:21 PM »

... you can  use a free satnav app on your phone, and display it on the car infotainment screen.

Er, no you can't, at least not without either replacing the head unit or doing an inordinate amount of hacking. The Mk3 head unit does not support modern stuff like Android Auto. The technology of the time was MirrorLink, which was not supported by phone manufacturers even when the car design was new. Just use the phone as a stand-alone satnav.

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Honda Jazz Mk2 2008-2015 / Re: Moving from a Mk1 Jazz

« Last post by Keekster71 on May 22, 2026, 01:20:18 PM »

I own three Mk2's, well the family has three.  I really like the Mk2, its a great car, better design than the mk1, more refined, and slightly larger inside.  But it has a weakness, in terms of rust.  There is very little under protection, no different to the mk1, but there is no wheel arch liner in the left rear wheel arch.  This causes winter salt to build up underneath around the petrol flap causing it to rust.  That's why I bought a japanese import which had not spent time on UK roads.  The Mk3 has a wheel arch liner which prevents this problem, which is an advantage.  But the mk3 has the tyre pressure monitoring system, which seems to irritate a lot of owners, but I guess you get used to it.  Eventually I'll replace my mk2 for a mk3, but only once I've had full use of my mk2, because I think its a very good car, which meets all my need.

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Honda Jazz Mk1 2002-2008 / Re: Oil in cylinders and failed emissions tests

« Last post by Multiplier7 on May 22, 2026, 01:20:09 PM »

If there is too much oxygen and unburnt fuel, that makes me think that it is not burning the fuel properly. Does your engine have dual ignition? Have you checked spark plugs and ignition coils?

Yeah that's what we were thinking as well; yes it is dual ignition and the spark plugs are oily with a white tip. The ignition coils are ok and we haven't found any evidence that they are not working properly since the spark plugs are all igniting and there's no e.g. misfire.

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Honda Jazz Mk3 2015-2020 / Re: Air and Pollen filter change

« Last post by Kremmen on May 22, 2026, 01:07:26 PM »

The latest seems to be, don't change the pollen filter that often then try and persuade the customer to accept a £99 aircon clean because it's tested with high contaminants

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Honda Jazz Mk1 2002-2008 / Re: Oil in cylinders and failed emissions tests

« Last post by Multiplier7 on May 22, 2026, 12:57:57 PM »

It's very puzzling.

Both the HC value and the CO value and the smell strongly suggest that the engine is running rich, but the garage Lambda value says that there is excess oxygen in the exhaust.

The most likely scenario is that air is leaking in after the cat, but you've checked for that.

When the garage test is done, the car will always be up to temperature so in closed loop mode. When cold, the smell is explainable as the engine has to run a "choke" rich mixture to get going.

Perhaps some injector cleaner in the tank? Clean the MAP sensor? New air filter? Feel along the exhaust when running and really look for any small leaks?

Yeah it is, but maybe we will do the emissions test again when we've changed the valve stem seals, but good to know at least some rich mixture when starting is normal. We have already changed the MAP sensor (actually it only has a MAF sensor not a MAP), the air filter, and smoke tested the exhaust but we could do it again. The injector cleaner into the fuel we could do that's true.

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Honda Jazz Mk1 2002-2008 / Re: Oil in cylinders and failed emissions tests

« Last post by Multiplier7 on May 22, 2026, 12:51:44 PM »

Like Lord V’s assessment, I remember the days when engines didn’t have much emission control and one judged sparking plug appearance as a very useful guide to engine condition. That having been said, I have seen piston tops part coated in thick shiny tar in my youth. Cylinder No 1 was the worst. In that instance it was due to a previous owner with an oil burning engine using copious amounts of pistol seal to mask the serious wear, prior to flogging the car to my friends unsuspecting young brother. The tarry deposit tended to accumulate on the worn side of the piston bore… You don’t explicitly say how long you have owned the car or how many miles you have driven it in your ownership….In those distant days, piston seal was very effective at lasting slightly in excess of the three months given by second hand car dealers! If my memory is correct, when the car was revved up hard with piston seal treatment, the exhaust possessed an unusual rather distinctive smell….Just saying…

Interesting...I hadn't considered that piston seal could be the reason causing it. We actually bought the car cheap at auction knowing it had this problem; so we haven't driven it much but the oil started showing on the pistons right after we took the spark plugs out and stuck the camera in the cylinders.

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Honda Jazz Mk3 2015-2020 / Re: Moving from a Mk1 Jazz

« Last post by Lord Voltermore on May 22, 2026, 12:13:20 PM »

If you normally drive a manual and dont need an automatic I'd avoid CVT.   Although i admit I have never driven one.    Unless your budget extends to a mk4 , which despite Honda still  calling it a CVT is a different thing entirely. Those are so  good I'd never buy another manual car.

If you have never used a satnav you might not realise just how useful it can be, taking a lot of the stress out of finding locations or driving through  unfamiliar towns or routes.

If a choice happens to be a Navi version dont worry too much that the maps  might be a bit  out of date.  Even with the latest updates  you occasionally encounter a new  road, housing development ,newly installed  roundabout etc thats still not yet on the mapping.      But dont dismiss a mk3 thats not a Navi version as you can  use a free satnav app on your phone, and display it on the car infotainment screen.   

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Honda Jazz Mk3 2015-2020 / Re: Moving from a Mk1 Jazz

« Last post by TnTkr on May 22, 2026, 11:19:45 AM »

I agree with what ColinB wrote above. I decided to buy manual after test driving CVT. And I have equipped my 3rd gen Jazz with full size spare wheel.

The judgment of the noise level depends on each one's previous experience. You have had older generation Jazz, so I'm sure 3rd gen is more quiet. It's also more quiet than 1st gen Honda CRV or new Dacia Sandero.