Cruising I get about 29 mpg.
Around town about 20-22.
Boosting lots (back to back interstate on-ramps) maybe only 10-12 mpg.

Tim

 

I was reading this thinking oh good doesn't sound like my MPG will suffer too much with the supercharger.

Then i remembered:

1 US gallon = 0.832673844 Imperial gallons

 

18-19 US MPG

 

280 miles to a tank mostly highway

8psi 550cc injectors.

 

I get 200-220 miles tops with a full tank of gas

 

there is no reason you can't get better than stock fuel economy with a turbo car, the bottom line is 99% of people don't want to pay for a proper tune which would result in significantly better economy, heck most people just dyno tune their car for a couple hours (if that) and call it good

 

I get around 220 with the supercharger off (Stock) and I get around 195-200 with the charger.

 

It's all in the tuning...you can get very good MPG if you have a good tune.

 

I get 23-25 at 70-80 with my KraftWerks you tune w/ 650 cc injetors. Low for an S2 but not bad for a car with 382 hp.

 

30+ highway

18-25 city depending on my mood