I am going to get used Prius 4, 2011 model which already has 151000 miles on it. Need your advice Do you think its still good to have it? What are the basics things I have to do to maintain it in good shape? Can I drive to 300 miles in a day from NYC-Boston which I have never driven before on that car as buying used? Also, how do I know what are upcoming expenditure or what should I change in next 1000-5000K. Dealer changed the engine oil.
If it's been maintained, you can pound miles on it all day long, every day. Just constantly check the oil level! Personally, I'd want to make sure these have been done: 1. Spark plugs. 2. Engine and Inverter Coolant 3. Transmission Fluid 4. Full EGR and Intake Manifold cleaning. Keep fresh fluids in it, keep the brake caliper pins lubed and replace stuff as it breaks. My 2011 has been used heavily by me as a rideshare since I got it 2 years ago with 42k on it. It now has 147k and the only repairs I've done are two wheel bearings and cleaned an ABS sensor. I like 0W-30 for sustained use instead of 0W-20. Mine doesn't burn any oil over 15k mile oil change intervals and my mpg vs 0W-20 is lost in the noise.
Listen to Bisco. Lots of high dollar expenses coming your way on that car unless the previous owner did twice the recommended oil changes and things like $800 egr system cleanings the factory does not recommend. Highly unlikely.