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UPDATE: If your Kia Rio starts to experience engine pinging other wise known as engine knock-you must start using BRAND NAME PREMIUM GAS IN THE CAR AND TURN OFF THE ECO MODE PERMANENTLY. At 57000 miles ,our Kia started with the dreaded pinging and after taking our car to the dealership once for spark plugs to try and stop the pinging I simply decided enough is enough-I turned off the eco mode and decide that from now one I would only run name brand premium gas in our Kia Rio. It took five tank fulls in a row to get the car to readjust it self fully to the premium gas and no eco mode on but -WHAT A DIFFERENCE! Well, the car has totally changed in the way the throttle now responds to the smallest inputs, the way the transmission shifts super smooth now and the myriad of strange surges and odd dead spots in the throttle have simply disappeared. Our Kia Rio 5 now drives like the world class car it was designed to be. It is very clear to me that our Kia needed to filled with premium gas all along and that the eco mode, while supposedly saving gas takes so much away from the driving experience of the car, it's not worth the hassle. Turn OFF THAT ECO MODE FOREVER AND START USING NAME BRAND PREMIUM GAS IN YOUR KIA RIO. After five tanks, you'll know it is well worth the small extra cost.Report it
Thanks for the indepth review! I'm researching the Rio5 currently and your words said alot.Report it
UPDATE-If your Kia Rio 5 develops serious engine pinging using regular gas ( like ours did) you should stop using regular gas and start using name brand premium gas. You will also have to turn off the eco mode too. If you do turn off the eco mode and fill your Kia Rio 5 with at least five tanks of name brand premium gas-you will be in shock at just how smoother and better your Kia runs, shifts and climbs hills too. I think this Kia Rio was never supposed to run regular gas. You can still use the cruise control settings to save gas-just stop putting regular gas in your Kia and turn off that ECO mode. I hope the pinging never gets to you but if it does-this should stop it without begging a dealership to fix what they know they can't fix anyway.Report it
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