Fiesta ST is powered by a 1.6 litre Ford EcoBoost engine to deliver performance while still providing good fuel efficiency. The 1.6 litre Ford EcoBoost Turbocharged engine features Twin-independent Variable Camshaft Timing (Ti-VCT) and put out 182 PS with 240 Nm of torque providing an acceleration time of under 7 seconds (0–100 km/h) and a top speed of 223 km/h. This engine features "overboost," allowing delivery of up to 200 PS for a maximum of 15 seconds. In the US, Ford is permitted to market the engine offering its overboost power figure; by contrast, in other countries such as the UK, a manufacturer is not permitted to market an engine's temporary output.

 

The engine is mated to a 6 speed manual transmission which features Ford’s Torque Vectoring Control system to brake the inside front wheel to aid agility, and has three ESP modes. The car provides high fuel economy while not sacrificing performance, with Ford claiming higher fuel economy than the Volkswagen Golf GTI. The ST features a redesigned front fascia similar to the one seen on the Focus ST, a large rear spoiler, aggressive rear diffuser with a dual exhaust system, completed with 17-inch wheels on Bridgestone Potenza tires. On the inside, the ST provides heavily bolstered Recaro front seats (optional in North America with partial leather, and available with either partial leather or cloth-only in other territories) and sportier décor.

 

The Ford Fiesta ST won Top Gear's Car of the Year for 2013.