I purchased a 2004 ES330 about 2 moths ago. It's a great car and I'm really happy about it.
One thing started to bother me: discrepancy between average MPG (19-28) and estimated range (295 mi on full tank) numbers on the dashboard. First of all display shows 2 average range numbers, I believe one is for city other is highway, please correct me if I'm wrong. If I'm making 19 MPG then I should get at least 330 mile (on 17.5 gal). Assume that my combined MPG is 24, then i should see 400+ but I don't. BTW: I use 87 octane from Costco. I believe 87 should be fine, am I wrong?
Could you please post your "estimated range" readings and type of fuel that you use?