[jman_va]

You actually have a case here under "lemon law" statutes in most states...

50% of the eMPG is beyond acceptable, especially when those figures are federally regulated. If you can clearly show; driving miles, conditions and articulate your driving habits, and you have taken it back to them 3x for repair and they still can't address this, then you have a case.

I am a bit of a "lead-foot" (comes from my EVOC driver training) and on my 2001 Sienna (and not the best maint), I still today average 365 - 385 miles per fill-up (avg 16.8 - 17.5 gals). This is even with my high acceleration type driving and in the horrendous stop-and-go traffic of the DC Metro area. So on this 6 yo Sienna with at best an 80% service record and essntially 50/50 city-highway driving, I still get an avg of 19 - 22 MPG. When I go on long highway trips, I even get about 25MPG.

So you really have an issue here if that is the MPG you are getting, but like someone else noted, don't trust the computer to give you your MPG, do a tank fill / milage comparison. I always reset my "A Trip Meter" to 0 whenever I refuel. I trust the milage more than my gas gauge since the last 1/4 tank seems to go from 1/4 to E in 30 miles.

Go to the County or State BBB, lookup the "Lemon Laws" in your state, and possibly get legal counsel... You may have a real case.

Good luck!