Just thought I would post my experience re: judder upon acceleration on Honda Jazz. I just bought a second hand Jazz 04 plate automatic with 138k miles. Found out that the car would judder for a couple seconds upon moving from a stationary position (or after slowing down) and also hesitant around 2500 revs upon accelerating. After a few days of driving, the car sputtered to a stop after performing a kangaroo dance when I tried to accelerate after turning left at a roundabout. I was able to start the car up again but the engine management light came on but was running very rough. I limped to a local garage to get a diagnostic test done resulting in problem with crank sensor. l got them to replace the crank sensor and also to change the engine oil, filters and spark plugs.
This seemed to have solved the problem with the hesitancy around 2500 revs and it was running a lot smoother but I was still getting the judder upon acceleration. Upon stumbling across this forum I realised that I had the dreaded Honda Jazz Auto CVT judder. Cheapest quote for a full CVT oil flush and replace was £90 from Phoenix Close Honda Specialists in Heywood (which is not a bad price as they said they would flush it twice).
Was going to book it in but stumbled across this thread and noteably Ed the Jazz post re: XADO X120 treatment. Thought I give it a shot as it was a small risk to take. Cheapest I found was £17 on fleabay. After receiving it, I injected the treatment from its syringe which looked like blue toothpaste. I took the car out for a spin and didn't notice any difference. I took it for a second run an hour later and within 20 miles the judder had disappeared!
It now feels like a different car and it feels great to be driving 'normally' again without passengers asking why the car is shaking everytime I drive off at the lights. So there you have it, I would certainly suggest giving XADO X120 a go if you have a judder problem with your Honda Jazz especially if you have an old high mileage one like mine and don't want to spend a lot on it. Don't know how it works but it sure seems like some magic blue paste I got for £17. I hope this helps other Honda Jazz owners who may stumble across this problem for a cheaper fix.
Google is your friend so google away for more information. P.S. I also stumbled across a product called Oil Extreme which appeared to solve the judder but the product is more expensive and is shipped from the US.
Happy judder free driving