We can roughly estimate the drop in engine power to be as high as 40 % whereas the engine torque can be increased, through appropriate engine management, by around 20 %. (rallycars.com)
With the manual transmission fuel mileage estimates drop to 26 mpg city, 36 mpg highway and 30 mpg combined. (truecar.com)
The USPSTF estimate dropped from 1,339 for women age 50 - 59 and 337 for women age 60 - 69, to 193 for women age 50 - 69. (sciencedaily.com)