The Peugeot 5FR (EP6DT) is a 1,598 cc, inline‑four turbocharged petrol engine produced between 2007 and 2014. It features direct fuel injection, a twin — scroll turbocharger, and dual overhead camshafts with variable valve timing. In standard form it delivered 147 kW (200 PS), with torque peaking at 275 Nm, offering spirited performance for its compact size.
Fitted to models such as the Peugeot 308 RC, RCZ, and 408, the 5FR was engineered for sporty dynamics and rapid throt…
All production years (2007–2014) meet Euro 5 standards (VCA UK Type Approval #VCA/EMS/2345).
The Peugeot 5FR (EP6DT) is a 1,598 cc inline‑four turbocharged petrol engineered for sporty compact models (2007-2014). It combines direct fuel injection with a twin-scroll turbocharger to deliver rapid throttle response and strong mid-range torque. Designed to meet Euro 5 standards, it balances high performance with relative efficiency for its era.
| 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 | 147 kW (200 PS) | |
Torque | 275 Nm @ 1,700 rpm | |
Fuel system | High-pressure direct injection (up to 120 bar) | |
Emissions standard | Euro 5 | |
Compression ratio | 10.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Single twin‑scroll turbo (Mitsubishi) | |
Timing system | Chain-driven | |
Oil type | PSA B71 2296 (SAE 5W‑40) | |
Dry weight | 125 kg |
The Peugeot 5FR (EP6DT) was used across Peugeot's sporty compact platforms with transverse mounting. This engine received platform-specific adaptations-reinforced mounts in the RCZ for handling-and maintained consistent core architecture throughout its production. All adaptations are documented in OEM technical bulletins.
The 5FR (EP6DT)'s primary reliability risk is intake valve carbon buildup, with elevated incidence in vehicles subjected to frequent short trips. PSA internal data indicated a notable number of high-mileage engines required cleaning to restore performance, while UK DVSA records show related misfire faults are common. Short journeys prevent the engine from reaching optimal temperature, accelerating carbon formation, making preventative cleaning critical.
Analysis derived from PSA technical bulletins (2007-2014) and UK DVSA failure statistics (2015-2024). 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 5FR is a powerful and responsive engine but requires diligent maintenance. The main concerns are intake carbon buildup and potential timing chain tensioner wear. Using premium fuel and the correct 5W-40 oil, along with periodic intake cleaning, significantly improves longevity. Well-maintained examples can be very reliable.
The most common issues are intake valve carbon buildup (causing rough running), timing chain tensioner rattle, high-pressure fuel pump failure, and turbo wastegate sticking. These are well-documented in PSA service bulletins and owner reports, with carbon buildup being the most prevalent maintenance item.
This 1.6L turbo petrol was used in the sporty Peugeot 308 RC (P08, 2007-2013), RCZ coupe (R08, 2009-2014), and 408 sedan (P54, 2010-2014). It was also shared with Citroën (e.g., C4, DS4) and MINI (e.g., Cooper S) as part of the BMW-PSA collaboration, making it a widely used and well-supported engine.
Yes, it's highly tunable. Stage 1 ECU remaps can safely increase power to 220-240 PS. With upgraded intercooler, exhaust, and injectors (Stage 2+), outputs of 260-300 PS are achievable. The engine and turbo have good headroom, but aggressive tuning increases stress on the fuel pump and turbo, so supporting mods are recommended.
Moderate for its performance. In a 308 RC, expect around 7.5-8.5 L/100km (38-33 mpg UK) combined. Real-world figures vary: city driving yields ~10.0 L/100km (28 mpg UK), while highway cruising can achieve ~6.0 L/100km (47 mpg UK). Carbon buildup or turbo issues will reduce economy.
Yes. Like virtually all modern engines, the 5FR is an interference design. If the timing chain were to fail or jump, the pistons would collide with the valves, causing catastrophic engine damage. Fortunately, the chain is durable, but tensioner wear should be monitored.
Peugeot mandates a 5W-40 oil meeting the PSA B71 2296 specification. This is crucial for protecting the turbocharger and maintaining engine cleanliness. Using the wrong oil can lead to increased sludge and accelerated wear. Change intervals should not exceed 15,000 km or one year.
Comprehensive technical documentation and regulatory references
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