Mileage...
Dude,
Carbs are pretty advanced if you know how to work on them, I have a 94 yup 94 Geo Metro daily driver w/ 167,000 miles on it and it gets 47mpg and I drive the hell out of it shifting about 5500 all the time. Suzuki 3cyl loves it. I have not even looked at the plugs in the 75,000...