I don't know when this article was written, and the results raise certain questions, but still Consumer Reports rates the Insight the best mpg on non-plugin hybrids:
https://www.consumerreports.org/fuel-economy-efficiency/the-most-fuel-efficient-cars-best-mpg/
The fact that they rate highway mpg much higher than city is curious at best, opposite of EPA and most people's experience. Either they got it backwards, or their tests are odd. Also surprising that the Ioniq, which is rated tops by EPA, does so differently on this test.
https://www.consumerreports.org/fuel-economy-efficiency/the-most-fuel-efficient-cars-best-mpg/
The fact that they rate highway mpg much higher than city is curious at best, opposite of EPA and most people's experience. Either they got it backwards, or their tests are odd. Also surprising that the Ioniq, which is rated tops by EPA, does so differently on this test.