break-in period

I think not very many for the car. Sometimes the driver takes a little longer.

A thousand miles or so should be sufficient.

 

The difference in MPG will not likely be significant. If you feel you are not achieving the expected MPG please fill out this survey so we can help you find your lost mpg. http://priuschat.com/forums/gen-iii...-answer-these-questions-esp-if-youre-new.html

 

:nod:

 

I don't belive that is true. You can attain great MPG when the car is brand spankin' new if your commute/daily driving is conducive to good MPG. I think part of the break-in period idea is that the tires are so new that they need to break in for best performance. All new tires require a break-in period so maybe this is where the idea that the car's break in is what provides the boost in MPG. Personally I never noticed any substantial gains in MPG during my break-in. Then again, as a drag racing kind of guy I was probably driving the car way to hard to really notice.

 

The break in period is 99 % for the drivers attitude to change.

 

A break-in period to achieve good mileage sounds a lot like something a salesman might come up with, just to deflect complaints. And there definitely is a learning curve for improving mileage. Plus, I wouldn't obsess it too much, a lot depends on your type and duration of trips.

 

the break in period is really for things like the cams and such. it's been told in the past to take it easy for the first 3k miles or so of ownership. some push that to 5k miles.

taking it easy means
not flooring it at a light..
trying not to achieve a high mph (stay below the limit)
no quick passing on the highway (maybe once or twice.. just not the entire time)
no full weight loads... so no camping trips because equipment weighs a lot, and this car prefers to be light
take it easy on the brakes (maybe this is an inverter break in as well?)

people on here report you should change your oil at 3k miles due to manufacturing debris in the engine. i guess you could do a change/flush when you get it to make sure less debris is in there... i think it takes time for these things to fall off though?)
so.. something like 3k change, 5k change.. then every 5k miles from there on. if you use synthetic, you can push those numbers a bit.

 

I bought my 2010 IV in February I got 49-52 mpg in the beginning. Now 7,500 miles later and warmer weather I get 55-57 mpg with a/c on. I havn't owned it long enough to determine if the difference in milage is because it is now broken in or the warmer weather.

 

Good observation, I too see that kind of change every spring. Warmer weather and summer gasoline. Winter gas is a mileage killer. Also around town in the winter the car needs to run more to keep itself warm for the catalytic converter and the heater.

The Prius a/c seems very efficient, I am convinced that mileage is better, at least on the highway, with a/c on and windows up rather than the other way around,