WE HAVE THE SAME MODEL,YOU DID NOT MENTION IF YOUR NOAH IS DIESEL POWERED OR GASOLINE, NONETHELESS IF YOUR CAR IS GASOLINE POWERED TRY NOT TO OVERUSED YOUR GAS PEDAL OR ACCELERATOR,OFTEN TIMES WE STEP ON OUR GAS PEDAL HARDLY EVEN THOUGH WE REALLY DON NOT NEED IT , THEN TRY HAVING YOUR CAR CHECK AT LEAST TWICE A YEAR, I USUALLY MAKE SURE I HAVE A FULL TANK ,TRY NOT LET YOUR GAS METER REACH HALF, IT WILL HELP , A FULL TANK NORMALLY USES FEWER GAS CONSUMPTION,THEN TRY TO CONTACT YOUR DEALER, IF IT WILL HELP YOU FEEL BETTER MY NOAH SR40G DRIVES 8 to 9 KM. PER LITER REGULAR GAS , BOTH ON CITY AND ROUHGROAD.