The Peugeot 5GY (EP6FDTM) is a 1,598 cc, inline‑four turbo‑petrol engine produced between 2014 and 2021. It features a 16‑valve DOHC layout with variable valve timing (VVT) and direct fuel injection, paired with a twin‑scroll turbocharger to deliver 151 kW (205 PS) and 300 Nm of torque. This compact powerplant was engineered for responsive performance, offering strong low‑end pull and linear power delivery.
Fitted primarily to the high — performance 308 GTi and 508 GT, t…
Production years 2014–2021 meet Euro 6 standards (VCA UK Type Approval #VCA/PSA/5GY).
The Peugeot 5GY (EP6FDTM) is a 1,598 cc inline‑four turbo‑petrol engineered for compact performance models (2014-2021). It combines gasoline direct injection with a twin‑scroll turbocharger to deliver sharp throttle response and high specific output. Designed to meet Euro 6 standards, it balances sporty performance with acceptable fuel economy.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,598 cc | |
Fuel type | Petrol | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Turbocharged | |
Bore × stroke | 77.0 mm × 85.8 mm | |
Power output | 151 kW (205 PS) | |
Torque | 300 Nm @ 1,900 rpm | |
Fuel system | Bosch direct injection (up to 200 bar) | |
Emissions standard | Euro 6 | |
Compression ratio | 9.5:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Twin‑scroll turbo (Honeywell) | |
Timing system | Chain‑driven (requires inspection) | |
Oil type | PSA B71 2312 (SAE 5W‑40) | |
Dry weight | 132 kg |
The Peugeot 5GY (EP6FDTM) was used across Peugeot's EMP2 platform with transverse mounting. This engine received platform-specific adaptations-reinforced engine mounts in the 308 GTi-and no significant facelift revisions occurred during its production run, ensuring broad parts compatibility. All adaptations are documented in OEM technical bulletins.
The 5GY's primary reliability risk is high-pressure fuel pump failure, with elevated incidence in vehicles using poor-quality fuel. PSA internal data indicated a notable failure rate before 130,000 km in affected batches, while owner reports frequently cite sudden engine cut-outs. Fuel contamination and infrequent oil changes increase pump stress, making fuel quality and adherence to service schedules critical.
Analysis derived from PSA technical bulletins (2014-2021) and owner-reported failure data (2018-2023). Repair procedures should follow manufacturer guidelines.
The most common questions about engine codes, what they mean, how to find them and how this database works
The 5GY offers exhilarating performance but has known issues, primarily the high-pressure fuel pump and timing chain tensioner. With meticulous maintenance, using the correct 5W-40 oil and premium fuel, and adhering to service schedules, it can be reliable. Later examples or those with the updated pump are generally more robust.
The most frequent issues are high-pressure fuel pump failure, timing chain tensioner wear, intake valve carbon buildup, and turbocharger wastegate actuator faults. These are well-documented in PSA service bulletins and owner forums, often linked to maintenance or fuel quality.
This 1.6 THP 205 engine was used in the high-performance Peugeot 308 GTi (270) from 2015 to 2021 and the Peugeot 508 GT from 2014 to 2018. It was the highest-output variant of the EP6 engine family in these specific model applications.
Yes, ECU remapping is very common and can yield safe power gains of +30-50 kW. The engine's internals and turbo are robust. However, increased power puts more strain on the clutch, turbo, and fuel system, so supporting modifications and enhanced maintenance are recommended for stage 2+ tunes.
In a Peugeot 308 GTi, expect combined fuel economy of approximately 7.2 L/100km (39 mpg UK). Highway driving can return ~5.8 L/100km (49 mpg UK), while spirited city driving may consume ~10.0 L/100km (28 mpg UK). Real-world figures vary significantly with driving style.
Yes. The 5GY is an interference engine. If the timing chain jumps or the tensioner fails catastrophically, the pistons can collide with the open valves, causing severe internal damage. Regular inspection for tensioner wear is advised.
Peugeot mandates oil meeting the PSA B71 2312 specification, typically a 5W-40 synthetic. Using the correct oil is vital for protecting the turbocharger, timing chain tensioner, and high-pressure fuel pump. Never use a lower specification oil.
Comprehensive technical documentation and regulatory references
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DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
Vehicle Certification Agency (VCA)
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Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
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