The Peugeot EP6CDTX is a 1,598 cc, inline‑four turbocharged petrol engine produced between 2010 and 2015. It features a dual overhead camshaft (DOHC), 16‑valve architecture, and gasoline direct injection (Bosch HDEV5). Output is rated at 147 kW (200 PS) with 275 Nm of torque, engineered for sporty performance and transient response in premium compact applications.
Fitted to models such as the Peugeot RCZ and 308 GTi, the EP6CDTX was co‑developed with BMW under the Princ…
All production years (2010–2015) meet Euro 5 standards (VCA UK Type Approval #VCA/EMS/6841).
The Peugeot EP6CDTX is a 1,598 cc inline‑four turbocharged petrol engine engineered for sporty compact coupés (2010–2015). It combines DOHC 16‑valve architecture with Bosch HDEV5 direct injection and a twin-scroll turbocharger to deliver strong mid‑range thrust and responsive power delivery. Designed to meet Euro 5 from launch, it balances performance with emissions compliance and drivability.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,598 cc | |
Fuel type | Petrol (Unleaded, RON 98 min for full output) | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Turbocharged | |
Bore × stroke | 77.0 mm × 85.8 mm | |
Power output | 147 kW (200 PS) | |
Torque | 275 Nm @ 1,700 rpm | |
Fuel system | Bosch HDEV5 direct injection (up to 200 bar) | |
Emissions standard | Euro 5 | |
Compression ratio | 10.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Twin‑scroll turbo (Mitsubishi TD04L-14T) | |
Timing system | Chain‑driven camshafts (maintenance‑free design) | |
Oil type | PSA 9730.B2 (SAE 5W‑40 full synthetic) | |
Dry weight | 128 kg |
The Peugeot EP6CDTX was used across Peugeot's RCZ/T9 platforms with transverse mounting and co‑developed under the PSA‑BMW Prince engine program. This engine received platform-specific calibrations—revised boost maps in the RCZ R and modified exhaust manifolds in the 308 GTi—but retained full mechanical interchangeability across all variants. Partnerships enabled MINI Cooper S and Citroën DS3 Racing to use identical EP6 variants. All adaptations are documented in OEM technical bulletins.
The EP6CDTX's primary reliability risk is high-pressure fuel pump (HPFP) drive lobe wear on early production units, with elevated incidence in high‑load or track‑used vehicles. PSA internal durability reports from 2014 indicated cam lobe scoring in approximately 9% of pre‑mid‑2013 engines before 90,000 km, while UK DVSA MOT records show emissions and ignition faults as top failure categories for RCZs. Extended oil change intervals and use of incorrect viscosity accelerate wear, making adherence to 5W‑40 PSA 9730.B2 oil and 15,000 km service intervals critical.
Analysis derived from PSA technical bulletins (2012–2015) and UK DVSA failure statistics (2015–2023). 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 EP6CDTX is generally robust when maintained properly. Early units (pre-mid-2013) had HPFP cam lobe wear issues, resolved by updated manufacturing. Key to longevity is using correct 5W‑40 PSA 9730.B2 oil and adhering to 15,000 km service intervals. Neglect leads to fuel system or timing chain faults.
Top issues include HPFP cam lobe wear (early builds), timing chain tensioner rattle, intake valve carbon buildup, and cam cover oil leaks. These are documented in PSA service bulletins and UK MOT data. Regular oil changes, quality fuel, and periodic intake cleaning mitigate most risks effectively.
Primarily the Peugeot RCZ 1.6 THP 200 (2010–2015) and 308 GTi (2014–2015). Also used in the Citroën DS3 Racing and select MINI Cooper S (N18) models with HPFP upgrades. All are transverse-mounted 1.6L turbocharged units meeting Euro 5 emissions standards.
Yes. The EP6CDTX responds well to tuning. Stage 1 remaps typically yield +25–35 PS and +50–60 Nm safely. The forged internals and twin-scroll turbo support up to 250 PS with supporting mods (intercooler, exhaust, fuel). Always use RON 98+ fuel and enhanced cooling.
Good for a performance engine. In a Peugeot RCZ 1.6 THP 200, expect ~8.5 L/100km (city) and ~5.8 L/100km (highway), or ~33–41 mpg UK combined. Real-world economy depends heavily on driving style—spirited use easily exceeds 10 L/100km. RON 98 fuel is recommended for optimal performance.
Yes. The EP6CDTX is an interference design. If the timing chain were to fail (rare due to maintenance‑free design), pistons could contact open valves, causing internal damage. However, the chain is engineered for life-of-engine service under proper oil maintenance.
PSA specifies 5W‑40 full synthetic oil meeting PSA 9730.B2 standard. This is critical for cam lobe and chain protection. Change every 15,000 km or annually. Avoid low-SAPS or ACEA C3 oils, as they increase HPFP and cam wear risk.
Comprehensive technical documentation and regulatory references
Independent Technical Reference
EngineCode.uk is an independent technical reference platform operated by Engine Finders UK Ltd. We are not affiliated with PEUGEOT or any other manufacturer. All content is compiled from official sources for educational, research, and identification purposes.
Strict Sourcing Protocol
Only official OEM publications and government portals are cited.
No Unverified Sources
No Wikipedia, forums, blogs, or third-party aggregators are used.
Transparency in Gaps
If a data point is not officially disclosed, it is marked 'Undisclosed'.
Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
PEUGEOT Official Site
Owner literature, service manuals, technical releases, and plant documentation.
EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
GOV.UK: Vehicle Approval & V5C
UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
Vehicle Certification Agency (VCA)
UK type-approval authority for automotive products.
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.
GOV.UK: Vehicle Approval
UK compliance and certification requirements for imported and modified vehicles.
VCA Certification Portal
Type-approval guidance and documentation.
Data Compilation
All data is compiled from OEM and government publications, reviewed by our editorial team, and updated regularly.
Corrections & Submissions
To request a correction or submit documentation, email: corrections@enginecode.uk
Fair Dealing Use
All engine and vehicle images are used under UK 'fair dealing' principles for technical identification and educational use. Rights remain with their respective owners.
Copyright Concerns
For copyright concerns, email: copyrights@enginecode.uk
GDPR Compliance
EngineCode.uk complies with UK GDPR. We do not collect personal data unless explicitly provided.
Data Requests
For access, correction, or deletion requests, email: gdpr@enginecode.uk
Trademark Notice
All trademarks, logos, and engine codes are the property of their respective owners. Use on this site is strictly for reference and identification.
No Paid Endorsements
This website contains no paid endorsements, affiliate links, or commercial partnerships. We do not sell parts or services.
Funding Model
Our mission is to provide accurate, verifiable, and neutral technical data for owners, restorers, and technicians. This site is self-funded.
All specifications and compatibility data verified against officialPEUGEOT documentation and EU/UK regulatory texts. Where official data is unavailable, entries are marked “Undisclosed”.
All external links open in new tabs. Please verify current availability of resources.