It seems to me that this board provides mostly negative information about the Prius Plug-in, so I wanted to inject my real-world experience, which has been fantastic.
My Plug-in Prius just hit 10,000 miles. I commute about 85 freeway miles per day along the San Francisco East Bay corridor. With the commute I face, EV-only is out of the question. I have three children, so the Volt is not an option. I charge the car once per day (at home). I cannot charge at work. On weekends, I often charge twice per day and drive fewer miles.
Most of this data came from the Prius display. Because it closely matches the mileage results I've logged with Fuelly.com, I believe the data are accurate. Your MPG will vary dramatically depending upon how far you drive each day and how often you recharge.
This car has been defect-free and very pleasant to own and drive. It gets a lot of positive attention, and I love passing Porsches during commute hour.
As of 8 October 2012:
Date of purchase: 15 April 2012
Energy Consumption:
Miles Driven: 10,175 miles
Gallons of Gas Consumed: 155 gallons
kWh of Electricity Consumed: 413 kWh
Overall Miles per Gallon: 65.65
Electric Miles Driven: 1,595
MPGe (electric only): 131.4 (1,595 miles / (413 kWh/34.02 gas equivalence))
Gas Miles Driven: 8,579
MPG (gas only): 55.35 (8,579/155 gallons)
133 = Recharges (based on capacity replenished)
assumption: one full recharge, including charging losses = 3.1 kWh
Maintenance:
Total Maintenance cost: $20
Replace cabin air filter (myself): $20
Oil Changes: 1, no charge
Tire Rotations: 2, no charge
Repairs/Defects: Absolutely none
The cabin filter is supposed to be replaced every 30,000 miles, but I like clean air.
@Rebound,
Thanks for confirming what I've been recommending to my friends with very long commutes and no workplace charging. I've suspected that the PiP would be very useful and cost effective for exactly the reasons you've documented.
I suspect that the Volt would yield about the same gasoline and electricity usage but the extra vehicle cost probably offsets the benefit when you have to burn some gas any way.
Its always great to hear when reality supports the theory.
I'm curious if you drove a gas-only Prius before the PiP and what kind of fuel consumption you achieved then?