Mazda RX8 Horsepower Controversy
Mazda RX8 Horsepower Controversy
Mazda RX8 Horsepower Controversy
Mazda RX8 Horsepower ControversyMazda RX8 Horsepower Controversy
In connection with the RX8's horsepower rating: the original marketing material from Mazda North America (MNAO) advertised the 6 speed manual transmission RX8 at 247hp @ 8,500 rpm. Assuming parasitic drivetrain loses between 17% -20%-common for modern rear wheel drive vehicles, a stock RX8 should measure between 205 ~ 197 horsepower at the rear wheels (rwhp)-depending on elevation, barometric pressure, temperature and correction factors applied. Instead, a stock RX8 chassis dyno run shows results ranging anywhere from mid-high ~ 160 to ~ 185rwhp. Such readings would represent parasitic drivetrain loses in excess of 25%. To say that, it is unacceptable to experience such a high level of loss through the drivetrain of a "sports car" with a carbon fiber drive shaft-amongst other things-is an understatement.
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