There's also an optional Torsen limited slip differential.
Peugeot says the 308 GTi 270bhp sets a new record for power-to-weight ratio in its segment, at just 4.46kg per unit of horsepower, and does 0-100kph in just six seconds.
Sportier ESP design allows more latitude, with more drift on bends.
The entry-level model 308 GTi 250bhp features the same engine as its more powerful sibling and goes from 0-100kph in 6.2 seconds.
Maxime Picat, Peugeot Brand CEO, said: "Peugeot is proud to add the 308 GTi by Peugeot Sport to its stable.
"This is a car that has generated great anticipation among enthusiasts aware of Peugeot's history of hot-hatches.
"From the 205 GTi to the latest 208 GTi and RCZ R, the brand has sold its sportier models to over 800,000 happy customers."
