This is specific to small Turbo engines (eg. 1.1 l three cylinder turbo). They get great MPG ratings in official testing, but in real world usage they perform

This is specific to small Turbo engines (eg. 1.1 l three cylinder turbo). They get great MPG ratings in official testing, but in real world usage they perform worse than a larger non-turbo counterpart (for the same amount of power/HP). Small turbos get good mpg ratings, but their real world use is different: https://www.greencarreports.com/news/1109366_small-turbo-engines-get-good-mpg-ratings-real-world-use-may-be-a-different-story https://www.greencarreports.com/news/1109366_small-turbo-eng... The trouble with turbos: Why fuel economy can be worse, not better https://www.theglobeandmail.com/globe-drive/adventure/red-line/the-trouble-with-turbos-why-fuel-economy-can-be-worse-not-better/article29705614/ https://www.theglobeandmail.com/globe-drive/adventure/red-li... Could we be reaching the end of the road for small-capacity turbocharged engines? https://arstechnica.com/cars/2017/02/could-we-be-reaching-the-end-of-the-road-for-small-capacity-turbocharged-engines/ https://arstechnica.com/cars/2017/02/could-we-be-reaching-th...