Im below 40 just because here i have to accel/decel sporadically to make people see me.
And i try to have my pipes talk more because everyone here texts/talks while driving.

but thats hella lot better than the 10 mpg my charger gets/.

 

My air horn doesn't effect my mpg.

 

You can see the build I have in my sig, riding 2up running state highways and county roads 55-60mph top end and 35-45mph low end we average 46-47. Interstate running 75-80 that drops to the 42mpg area and around town I average 36-38mpg. My buddies totally stock RG 2012 gets about the same as I do. If were out hitting it hard with some buddies we end up around the 42 mark.

 

If you really get curious, mount a Dynojet Power Vision tuner which can provide you with average mpg while you are riding.

 

My fuel mileage is when it's empty I fill it, more fun on the way. If I had to fill it every 100 miles I'd still ride the heck out of it

 

Might be true with stock, but anything else and consumption will drop like a lead balloon. I reckon on around 30mpg with Stage 1.