Engine Peugeot EP6FADTX

The 1.6-liter Peugeot EP6FADTX engine was produced at the Duvrin plant from 2017 to 2022 and was installed on models such as 308, 508, DS7, DS9 in combination with an 8-speed ATN8 automatic transmission. There were two different versions of such a unit: 5GC for DS cars and 5GG for Peugeot.

4th gen of the Prince family: EP6FADTX, EP6FADTXD, EP6FADTR.


Production years 2017-2022
Displacement, cc 1598
Fuel system direct injection
Power output, hp 225
Torque output, Nm 300
Cylinder block aluminum R4
Block head aluminum 16v
Cylinder bore, mm 77
Piston stroke, mm 85.8
Compression ratio 10.2
Features Valvetronic
Hydraulic lifters yes
Timing drive chain
Phase regulator yes
Turbocharging BorgWarner K03
Recommended engine oil 0W-30
Engine oil capacity, liter 4.25
Fuel type petrol
Euro standards EURO 6d
Fuel consumption, L/100 km (for Peugeot 508 2020)
— city
— highway
— combined
Engine lifespan, km ~250 000
Weight, kg 138

The engine was installed on:

  • DS DS7 I (X74) in 2017 – 2021;
  • DS DS9 I (X83) in 2020 – 2022;
  • Peugeot 308 II (T9) in 2017 – 2019;
  • Peugeot 508 II (R8) in 2018 – 2021.

Disadvantages of the EP6FADTX engine

  • On specialized forums, there are complaints only about replacing the wiring harness and fuel pump under warranty.
  • Due to the aggressive operation of the Start-Stop system, the chain can stretch up to 100,000 km.
  • The fuel injection here is only direct and the intake valves are quickly overgrown with soot.
  • Other engine problems are related to electrical failures and are treated with firmware.

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