2017 Audi A4 ultra with Millerized 2.0 TFSI offers 31 mpg combined; highest EPA-estimated fuel economy in competitive segment
Green Car Congress
AUGUST 17, 2016
liter TFSI engine ( earlier post ) to achieve 27 mpg (8.7 l/100 km) city, 37 mpg (6.35 l/100 km) highway, and 31 mpg (7.58 l/100 km) combined EPA-estimated fuel economy. The Audi TFSI intake valves close much earlier than usual; in connection with increased pressure in the intake manifold, this reduces throttling losses.
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