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Originally Posted by gonavy
Similar systems are used on the Camry, Highlander, Escape, and Prius. They are able to use only the electric motor for propulsion at lower speeds and moderate acceleration- the gas engine is off. That saves more fuel under those conditions, which are the conditions seen in 'city' driving. The highway is faster and the engine is on almost the entire time.
This is different from the Honda system which only uses the electric motor to assist the engine- the engine still has to provide propulsion all the time.
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the part about the ice on toyota's hsd being on most of the time on the highway is definitely truer than ima. ima has a much better time at shutting off the engine at highway speeds than hsd - especially at higher cruising speeds. i can set my hch.ii on cruise and see the gas engine being cut off quite a bit.
the part about ima needing its ice to propel the car all the time is a bit misleading. gen 2 of ima can propel the car by itself and does but not as frequently as hsd in the city and the car needs to be up to speed already. better to say that hsd can accelerate the car from a standing stop while ima cannot.
don't mean to be a nit picker but ima sometimes gets interpreted as an inferior system b/c of information that is interpreted the wrong way.
