It has 2 (two) ..one upstream at collector on exhaust manifold and another downstream by catalytic convertor
The 2013 Toyota Prius has 16 valves.
The 2013 Toyota Prius has an inline 4 engine.
The 2013 Toyota Prius is a hybrid-powered vehicle.
The 2013 Toyota Prius-V has 16 valves.
The curb weight of the 2013 Toyota Prius is 3042 lbs..
The 2013 Toyota Prius has a continuously variable-speed automatic.
The 2013 Toyota Prius runs on regular unleaded.
The 2013 Toyota Prius has double overhead cam (DOHC).
The 2013 Toyota Prius-C has 16 valves.
The 2013 Toyota Prius is 14 ft. 8.4 in. (176.4 in.) long.
The 2013 Toyota Prius has a drag coefficient of 0.25 Cd.
The 2013 Toyota Prius-Plug-IN has 16 valves.