I looked into buying a hybrid recently but as I really wanted a station wagon the only really option was a Toyota Feilder hybrid which didn't claim to have the best fuel economy, at least not compared to a Aqua or Prius. I ended up buying a VW Golf wagon which saved probably $8-$10k on the purchase price and I get around 6L/100km which is probably only 1L/100km worse that the Toyota options.
When looking into Hybrids you have to remember there are different types of hybrid.
The Toyota system does appear to be the most relaible system and offers the best fuel economy, outside of a PHEV (provided you make use of the plug in sytem). From the reasearch I did the hybrid battery are probably the most likely part to fail (some last 10 years, others fail in 4-5 years) but this battery is a lot smaller than a full EV battery so isn't too expensive, not like the $20 - $30k you see quoted for a full EV.
There are tonnes of forums out ther for Prius's and other Toyota hybrids, a lot of them seem to discuss the minute difference between the Gen 1, 2, 3 and 4 Prius, with some being better than others.
But for the most part the Toyotas are the way to go.
I would definietly look into the real life fuel consumption though as if you don't do many KMs in a year and the purchase price is a reasonable bit higher it might not be worth it to go hybrid.
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