Alex Nishimoto for Motor Trend:

Powering the Prius c is a 1.5-liter Atkinson-cycle I-4 paired with Toyota’s Hybrid Synergy Drive system. This package delivers a total output of 99 hp—35 hp less than the 134 hp produced by the standard Prius’ 1.8-liter setup. This number is in line with the Insight’s combined 98 hp and 123 lb-ft of torque, though considerably less than the Golf TDI’s 140 hp and 236 lb-ft.

[...] But if you want a car that’s both fun and efficient, the 236 lb-ft of torque from the Golf TDI’s diesel engine makes a strong case for itself.