I HAVE A 2011 HYUNDAI SONATA GLS. I NOTICED THAT THE AUTOMOBILE DOWN-SHIFTING IS PROMINENT, ESPECIALLY WHEN TRAVELING LOWER THAN 40MPH. YOU CAN ACTUALLY FEEL THE DOWN-SHIFTING. AT TIMES I CAN FEEL AT LEAST 3 GEAR DOWN-SHIFT. MY QUESTIONS IS THAT THE PRESENT TRANSMISSION OR ENGINE/TRANSMISSION DOWN-SHIFTING DECREASES MILEAGE PER GALLON (THE ECONOMY OF FUEL). PRIMARILY DUE TO WHEN THE CAR DOWNSHIFTS, THE RPM OF THE ENGINE RUNS HIGHER THEN A SMOOTH, LOWER RATIO DOWN SHIFT DESIGN. THE CORRECTION MAY SAVE THE MILEAGE AS MUST AS 3 MILES PER GALLON. CAN YOU PLEASE GIVE ME AN EXPLANATION WHY THIS VEHICLES DESIGN IS NOT RE-ENGINEERED.THANK YOU.THANK YOU RICHARD FOR YOUR LAST ANSWERED QUESTION.

Asked by May 24, 2012 at 04:06 PM about the 2011 Hyundai Sonata GLS

Question type: General

A TECHNICAL ANSWER TO THE ABOVE QUERY, WOULD BE MUCH APPRECIATED.

1 Answer

257,955

Check out this link........http://www.hyundai-forums.com/222-yf-2011-sonata-i45/109282-talked-hyundai-mechanic-about-automatic-early-downshifting-during-braking-coasting-faster-de-acceleration-than-other-cars.html

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