Sounds to me like you were really enjoying your new car.....

 

I've never seen mpg less than 20, except when the DIC was reset and I'm starting out from the pump. I usually see 28 and on the highway 30+.

 

I've gotten mine below 15 on the DIC..... But I was trying!

and Yes! I was having fun. Front tires weren't

 

2.2L Auto 2007.

I tossed 10 gal. of 87 Oct. CT Winter Gas which on ave is 2-3 MPG less then lets say a NJ fuel.

I zeroed out the MPG calculator.

Mixture of City and Highway. Bout 75% Highway, 25% City.

Managed to be light on the throttle, never tried to let it get past 2,500 RPM and on the freeway I ave. 65-75 mph.

I got as high as 27.5 mpg and as I got to low fuel light again and it was just at 25.6 So that was not bad. My average week is really like 90/10 highway/city so I bet once it gets warmer and play around with driving habits it should improve.

 

I was getting 24 MPH after 50,000 miles and had the fuel injection system cleaned at Valvoline. The MPH is back up to 25 again. I am also switched back to Valvoline Durablube.

 

Just my lil tidbit. I recently tacked on over 110 miles in a day commuting from Bremerton, Washington to Lake Stevens, Washington (via ferry boat where needed) and driving roughly 50/50 road and highway mighty aggresively I averaged about 25-26 MPG with speeds from 15-70 MPH and various amounts of "PUT YOUR FOOT DOWN!" thrown in.

Catching rubber from a standstill to 20 MPH around a corner.

2010 1LT stock 2.2L auto

HINT: Traction control has an impact on performance and efficiency depending on what you're trying to do.