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Hello I am new to this forum and Hyundais. I recently bought from a local Hyundai dealer a 2015 ix20 1.6 automatic with 18K miles (UK). I've had the car now for about 3 months and it returns about 23mpg. On cold mornings there is no power after I start driving for a few seconds and then the power kicks back in. Also the second gear on the automatic gearbox feels like it is "slipping" almost like a slipping clutch on a manual car. I have complained to the dealer and they have checked the car and reported no faults. They also updated the gearbox ECU version.
The car still has another 2.5 years of warranty remaining. Has anyone experienced similar issues? The fuel economy seems dreadful, I mainly drive in town and do short trips and definitely don't have a heavy foot. Thanks
 

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Did you leave the car with the dealer overnight so they could test it from cold?
You can't expect them to diagnose a fault that only happens on cold mornings unless you leave the car with them so they can test it under those conditions.
 

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Right now my 2015 iX20 1.6 automatic with 56K miles is at the dealer with the exact same problem.
Stuttering, bad gearshifting, not just with cold start in the morning, high fuel consumption (27.4 MPG or 9.7 Ltr/100KM urban)
After 3 days they finally have diagnosed it as a faulty TCU (transmission control unit) in the auto-gearbox, and replaced the TCU yesterday afternoon.
The mechanic took the car home overnight and will test it again this morning.
If the problem is now solved, I get the car back today.
If not they will also replace the complete gearbox.
Glad it's still under warranty.
 

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The dealer has now had my iX20 for TWO WEEKS and the fault has still not been found!
After replacing the camshaft position sensor and the TCU, they changed the transmission fluid, have had a Hyundai specialist in from the importer, and still have not found/solved the problem.
They sent a report to Hyundai in Korea and won't do anything until they hear back from them.
They claim that they have never come across such a problem!
I bought this car (used) only 6 weeks ago and my patience is really at its end!
On Monday I am going to call them and tell them I want my money back. That car is a lemon!
I will still want another Hyundai iX20, but this time the newer model with the larger grill and 6-speed automatic.
And it has to be an SE or Premium version, not the Active (that I got) or Style version that apparently have weaker engines with higher fuel consumption!
My previous car was also a Hyundai, a 2005 Santa Fe with AWD and 2.7 Ltr. V6, automatic. Bought it used in 2009, had it for nearly 10 years and I only sold it (with 135K miles) because I moved from USA back to Ireland.
I love Hyundai but I hate lemons!
 

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UPDATE: turns out that they have been feeding me a load of BS during those two weeks!
They plain just had incompetent mechanic(s) working on it!
Last Sunday I had enough and sent emails with the problem story to the Hyundai importer and to the dealer's management.
On Monday the dealer's service manager emailed me back, that he had just returned from 3 weeks holiday, and please leave it with him for a bit more, he'd look into it.
Monday afternoon I received a phone call that they had found the cause and would fix it pronto.
And would you believe that I got the car back on Tuesday with the problem sorted?
Apparently all of the claimed changes/swaps had either not been done, or only halfheartedly.
In the end all they had to do was get a competent person to reprogram the ECU.
So (for now at least) all is well, the car is a lot snappier actually and runs perfectly.
Now we'll just wait and see if I want to keep it or not.
As they say, only time will tell.
 
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