EURO FWD /// platform file
Ford Fiesta ST (Mk7) build guide
EcoBoost · 1.6 turbo I4. What the stock hardware reliably supports, where it breaks first, and the fastest safe path to more.
The Ford Fiesta ST (Mk7) makes 197 hp stock at roughly 2,750 lb (14 lb/hp). Its stock internals are good for about 320 hp, the fuel system for around 270 hp, and the stock turbo(s) flow about 260 hp. Below is the limit sheet carbuildcheck analyzes against, plus the platform's documented weak points.
01 Factory card
Stock power197 hp
Curb weight2,750 lb · 14 lb/hp
LayoutFWD
InductionTurbocharged
02 What stock parts support
Engine internals~320 hp
Fuel system~270 hp
Induction ceiling~260 hp
Clutch (manual)~240 hp
Transmission (auto/DCT)~270 hp
Cooling (sustained)~300 hp
Community-documented crank-hp planning figures, conservative by design. How these are used in the score →
03 Where it breaks first
The stock turbo taps out early. Keep it a momentum car or budget the swap plus supporting mods together.
Cooling is the honest weak point at pace. Intercooler and coolant work come before power.
04 The typical path
Stage 1 tune → intake → downpipe → intercooler → Stage 2 tune. Fueling before E85, driveline before sticky tires.
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