I love the internet. Any piece of data you'd ever imagine is available, if you use the right search terms: What's your Sub's Gas Milage?.
The general concensus seems to be: 8-10 in the city, 13-14 overall, 17-18 on the highway, 13-14 when towing.
Happy now?
13-14 overall, 17-18 on the highway, 13-14 when towing.
Happy now?
Not really. Now I want to know why I'm only getting 15 hwy when everyone else is getting at least 17.
It has 120K on it, time for a tuneup.
Thanks.