The Citroën 5GM (EP6FDTX) is a 1,598 cc, inline — four turbocharged petrol engine produced between 2010 and 2018. It forms part of the PSA — Renault HFV (High Fuel Value) engine family, co — developed with BMW for use in compact and mid — size platforms. Featuring direct fuel injection (GDI), variable valve timing (VVT), and twin — scroll turbocharging, it delivers 147 kW (200 PS) and 275 Nm of torque, enabling strong mid — range performance for sport — oriented trims like the DS3…
Production years 2010–2018 meet Euro 5 standards (VCA UK Type Approval #VCA/EMS/5678).
The Citroën 5GM (EP6FDTX) is a 1,598 cc inline-four turbocharged petrol engine engineered for premium compact models (2010–2018). It combines gasoline direct injection with a twin-scroll turbocharger to deliver responsive mid-range power and sporty driving dynamics. Designed to meet Euro 5 standards, it balances performance with acceptable fuel economy for its class.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,598 cc | |
Fuel type | Petrol (Unleaded, 95 RON min) | |
Configuration | Inline-4, DOHC, 16-valve | |
Aspiration | Turbocharged (twin-scroll) | |
Bore × stroke | 77.0 mm × 85.8 mm | |
Power output | 147 kW (200 PS) @ 5,500 rpm | |
Torque | 275 Nm @ 1,900–4,500 rpm | |
Fuel system | Bosch HDEV5 direct injection (up to 200 bar) | |
Emissions standard | Euro 5 | |
Compression ratio | 9.5:1 | |
Cooling system | Water-cooled, electric thermostat | |
Turbocharger | Garrett GT1544L (variable nozzle turbine) | |
Timing system | Timing chain (DOHC, dual VVT) | |
Oil type | Total Quartz INEO ECS 5W-30 | |
Dry weight | 128 kg |
The Citroën 5GM (EP6FDTX) was used across Citroën's PF2/PF3 platforms with transverse mounting and shared with Peugeot and DS Automobiles. This engine received platform-specific adaptations-shorter intake manifolds in the DS3 and revised torque mounts in the C4 Picasso-and from 2015 received updated turbocharger cooling circuits, creating interchange limits. All adaptations are documented in OEM technical bulletins.
The EP6FDTX's primary reliability risk is turbocharger bearing wear, with elevated incidence in high-performance or short-trip usage. PSA internal quality reports from 2014 indicated a significant number of pre-2015 units required turbo replacement before 100,000 km, while UK DVSA MOT records show increased catalytic converter failures linked to oil consumption in neglected engines. Frequent high-load operation without cool-down cycles increases thermal stress, making oil quality and service adherence critical.
Analysis derived from PSA technical bulletins (2010–2018) and UK DVSA failure statistics (2015–2023). Repair procedures should follow manufacturer guidelines.
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The EP6FDTX delivers strong performance but pre-2015 models have known turbocharger and timing chain concerns. Later revisions (post-2015) improved oil cooling and component durability. Well-maintained engines with regular oil changes using correct specification (5W-30) can exceed 150,000 km. Aggressive driving without cool-down periods significantly increases turbo failure risk.
Primary issues include turbocharger bearing wear (especially pre-2015), timing chain tensioner degradation, high-pressure fuel pump failure, and catalytic converter clogging. These are documented in PSA service bulletins and linked to oil quality, fuel octane, and driving patterns. Regular maintenance is essential to mitigate risks.
The EP6FDTX was used in performance variants of the DS3 (1.6 THP 200), DS4 (1.6 THP 200), C4 (1.6 THP 200), and C4 Picasso (Bi-Turbo 200) from 2010 to 2018. It was also shared with Peugeot (308 GTi, 508 RXH) and MINI (Cooper S R56). All models are Euro 5 compliant.
Yes, the EP6FDTX responds well to ECU remapping, with stage 1 tunes typically adding +30–40 kW. However, stock turbos and fuel systems are near their limits, so supporting mods (intercooler, exhaust) are recommended. Over-tuning without cooling upgrades risks turbo or HDEV5 pump failure.
Official combined figures range from 6.5–7.2 L/100 km (~44–39 mpg UK). Real-world consumption is typically 8.0–9.5 L/100 km (~35–30 mpg UK), depending on driving style. Performance trims like the DS3 Racing see higher consumption. Using 98 RON fuel improves throttle response and efficiency under load.
Yes. The EP6FDTX is an interference engine. If the timing chain fails or skips, pistons will contact open valves, resulting in catastrophic engine damage. Any timing-related rattles must be investigated immediately. Replacement of the chain kit at recommended intervals is critical.
PSA specifies Total Quartz INEO ECS 5W-30 (or equivalent meeting PSA B71 2290). This low-SAPS oil is essential for turbocharger and GDI system protection. Oil must be changed every 15,000 km or annually to prevent sludge, coking, and premature wear.
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