Gas mileage after replacing oxygen sensor increased
 

Today i had a test drive after replacing my oxygen sensor.
The result is 17.5 mpg, driving in a city center.
Before replacing it was about 10.5 mpg.

I'm very impressed.

Yup, that is the typical reason for poor mileage in most of these cars. Its nice when its just something small and affordable eh? :lol:

Hope you're right. According to DHL, my new GM one gets here today.