The Peugeot 5FU (EP6CDTX) is a 1,598 cc, inline‑four turbo‑petrol engine produced between 2015 and 2021. It features a DOHC 16‑valve design with BMW‑sourced twin‑scroll turbocharging, direct fuel injection, and Valvetronic variable valve lift. Output is rated at 184 kW (250 PS), delivering peak torque of 330 Nm for exhilarating, high-revving performance.
Fitted exclusively to the high-performance 308 GTi 270 and 308 GTi by Peugeot Sport, the 5FU was engineered for track-capable agility with razor-sharp throttle response. Emissions compliance for its production period was achieved through a gasoline particulate filter (GPF) and dual oxygen sensors, meeting Euro 6 standards.
One documented concern is premature failure of the high-pressure fuel pump, which can lead to sudden power loss or no-start conditions. This issue, referenced in Peugeot Service Bulletin 18AP05, is often attributed to internal wear exacerbated by extended service intervals. Revised pump internals were introduced for the 2018 model year to improve durability.
Production years 2015–2021 meet Euro 6 standards (VCA UK Type Approval #VCA/EMS/8765).
The Peugeot 5FU (EP6CDTX) is a 1,598 cc inline‑four turbo‑petrol engineered for high-performance hatchbacks (2015-2021). It combines direct fuel injection with BMW-sourced Valvetronic and a twin‑scroll turbocharger to deliver exceptional, linear power and a high-revving character. Designed to meet Euro 6 standards, it balances extreme performance with modern emissions control.
| 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 | 184 kW (250 PS) | |
| Torque | 330 Nm @ 1,900 rpm | |
| Fuel system | Bosch HDEV6 direct injection (up to 350 bar) | |
| Emissions standard | Euro 6 | |
| Compression ratio | 9.2:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Single twin‑scroll turbo (Mitsubishi Heavy Industries) | |
| Timing system | Chain (front‑mounted) | |
| Oil type | PSA B71 2312 (SAE 0W‑30) | |
| Dry weight | 138 kg |
The twin-scroll turbo and Valvetronic provide explosive, lag-free power delivery ideal for spirited driving but demand strict adherence to 10,000 km oil change intervals using PSA B71 2312 specification to protect the turbo and fuel system. Premium unleaded fuel (RON 98) is mandatory for optimal performance and to prevent knock. The high-pressure fuel pump is a known weak point in early builds; post-2018 units feature revised internals per PSA SIB 18AP05. The GPF system requires avoiding prolonged low-RPM driving to prevent clogging.
Oil Specs: Requires PSA B71 2312 (ACEA C2/C5 equivalent) specification (PSA Owner's Manual).
Emissions: Euro 6 certification applies to all 2015-2021 models (VCA Type Approval #VCA/EMS/8765).
Power Ratings: Measured under ECE R85 standards. Output is consistent across model applications (PSA Group PT-2021).
PSA Technical Documentation: Repair Manual 5FU, SIB 18AP05
VCA Type Approval Database (VCA/EMS/8765)
ACEA Oil Sequences: ACEA C2/C5 Specification
The Peugeot 5FU (EP6CDTX) was used exclusively on Peugeot's PF2 platform with transverse mounting. This engine received no platform-specific adaptations beyond the standard high-performance cooling and exhaust setup, and no significant facelift revisions occurred during its production run, ensuring full parts interchangeability. All specifications are documented in OEM technical bulletins.
Locate the engine code stamped on the flat machined surface at the front of the cylinder block, near the timing chain cover (PSA Repair Manual 5FU). The 8th digit of the VIN is 'U' for the 5FU engine. Visually, it features a black plastic rocker cover with "EP6" and "270" branding and a prominent twin-scroll turbocharger inlet. Critical differentiation from the 5FA (EP6CDT): The 5FU has a specific Bosch ECU with a unique calibration for 250 PS and a higher-capacity intercooler. Fuel pump part numbers differ significantly between pre-2018 and post-2018 builds; always verify against the engine's build date.
The 5FU (EP6CDTX)'s primary reliability risk is high-pressure fuel pump failure, with elevated incidence in vehicles with modified ECU maps or aggressive driving. PSA internal reports indicated a notable failure rate before 60,000 km in early production batches, while owner feedback frequently cites sudden power loss. Extended periods of high-RPM operation and infrequent oil changes accelerate pump wear, making maintenance adherence critical.
Analysis derived from PSA technical bulletins (2017-2021) and owner-reported failure data (2018-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about PEUGEOT 5FU-EP6CDTX.
Comprehensive technical documentation and regulatory references
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