The Citroen 5FR (EP6DT) is a 1,598 cc, inline — four turbocharged petrol engine developed by PSA Group in partnership with BMW, produced between 2007 and 2015. It features direct fuel injection (THP), variable valve timing (VVT), and twin — scroll turbocharging. In standard applications it delivers 147 kW (200 PS), with peak torque of 275 Nm available from 1,900 rpm, providing strong mid — range performance for compact and performance — oriented models.
Fitted to models su…
Production years 2007–2015 meet Euro 5 emissions standards .
The Citroen 5FR (EP6DT) is a 1,598 cc inline-four turbocharged petrol engine engineered for compact and premium hatchbacks (2007–2015). It combines direct fuel injection (THP) with a twin-scroll turbocharger to deliver responsive mid-range acceleration and refined performance. Designed to meet Euro 5 standards, it balances sporty driving dynamics with regulated emissions compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,598 cc | |
Fuel type | Petrol | |
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 | Direct injection (THP, up to 150 bar) | |
Emissions standard | Euro 5 | |
Compression ratio | 9.5:1 | |
Cooling system | Water-cooled | |
Turbocharger | Mitsubishi TD04HL-15T twin-scroll | |
Timing system | Timing chain (DOHC) | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 122 kg |
The Citroen 5FR (EP6DT) was used across Citroen's C3/DS platforms with transverse mounting and shared with Peugeot and MINI under joint development agreements. This engine received platform-specific calibrations-adapted throttle response in the DS3 and revised torque delivery in the C4 Picasso-and from 2012 the updated DS4 adopted a revised turbocharger and cooling circuit, creating interchange limits. All adaptations are documented in OEM technical bulletins.
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Field reports and technical service bulletins highlight component wear patterns under high-load operation. Adherence to manufacturer service intervals and approved fluid specifications is critical for long-term reliability.
Analysis derived from manufacturer technical service bulletins and industry workshop records. Repair procedures should follow manufacturer guidelines.
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The EP6DT offers strong performance but requires disciplined maintenance. Pre-2012 models are prone to turbocharger issues if oil changes are delayed. Later revisions with updated cooling systems show improved reliability. Using correct oil (PSA B71 2290) and avoiding short trips help prevent premature wear. Well-maintained units can exceed 150,000 km without major issues.
Key issues include turbocharger bearing wear (especially pre-2012), high-pressure fuel pump failure, intake valve carbon buildup, and coolant leaks from the thermostat housing. These are documented in PSA service bulletins and supported by field failure data. Regular maintenance and use of quality fuel/oil reduce risk significantly.
The EP6DT was used in the Citroen DS3 (THP 155/200), DS4 (THP 200), and C4 Picasso (THP 155). It was also shared with Peugeot (308 GTI) and MINI (Cooper S R56) under the PSA-BMW joint engine program. Production spanned from 2007 to 2015, primarily in Euro 5-compliant models.
Aftermarket ECU tuning is common on the 5FR-EP6DT platform, but increasing boost or altering engine parameters accelerates component wear, impacts emissions compliance, and may void vehicle warranties. Any modifications should be evaluated carefully by a qualified specialist.
In combined driving, expect 7.5–8.5 L/100km (33–38 mpg UK). The DS3 THP 200 averages ~8.0 L/100km in mixed use. Real-world economy depends heavily on driving style—aggressive use can exceed 10 L/100km. Highway cruising is more efficient, often achieving 6.5–7.0 L/100km.
Yes. The EP6DT is an interference engine. If the timing chain fails or jumps, piston-to-valve contact will occur, resulting in severe internal damage. While the chain is designed for life, any abnormal noise from the front of the engine should be investigated immediately to prevent catastrophic failure.
PSA specifies SAE 5W-30 oil meeting PSA B71 2290 standard. This synthetic oil ensures proper turbocharger lubrication and protects against high-temperature coking. Oil changes should be performed every 15,000 km or annually, whichever comes first, to maintain engine longevity.
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Official guidance on engine swaps and inspection implications.
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Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
WLTP and RDE testing procedures for emissions certification.
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