The Peugeot 851X (ZDJL) is a 1,598 cc, inline‑four turbocharged petrol engine produced between 2010 and 2016. It features direct fuel injection, dual overhead camshafts (DOHC), and a single twin‑scroll turbocharger. In standard form it delivers 121 kW (165 PS) and 240 Nm of torque, with strong mid‑range response for agile urban and motorway driving.
Fitted to models such as the Peugeot 308 II (T9), 3008 II, and 508 RXH, the ZDJL was engineered for drivers seeking a balance o…
All production years (2010–2016) meet Euro 5 emissions standards (VCA UK Type Approval #VCA/EMS/851X).
The Peugeot 851X (ZDJL) is a 1,598 cc inline‑four turbocharged petrol engine engineered for compact and mid‑size models (2010–2016). It combines gasoline direct injection with a twin‑scroll turbocharger to deliver responsive mid‑range torque and smooth power delivery. Designed to meet Euro 5 standards, it balances performance with urban drivability and compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,598 cc | |
Fuel type | Petrol (Unleaded) | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Turbocharged (twin‑scroll) | |
Bore × stroke | 77.0 mm × 85.8 mm | |
Power output | 121 kW (165 PS) @ 6,000 rpm | |
Torque | 240 Nm @ 1,400–4,000 rpm | |
Fuel system | Bosch HDP5 high‑pressure direct injection (up to 200 bar) | |
Emissions standard | Euro 5 | |
Compression ratio | 10.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Single twin‑scroll (Honeywell GT1549V) | |
Timing system | Chain (front‑mounted; low‑wear design) | |
Oil type | PSA B71 2312 (SAE 5W‑30) | |
Dry weight | 128 kg |
The Peugeot 851X (ZDJL) was used across Peugeot's T9 and R8 platforms with transverse mounting and no external licensing. This engine received platform-specific adaptations—reinforced mounts in the 3008 II and revised cooling ducting in the 508 RXH—and from 2014 the facelifted 308 II adopted minor HPFP revisions, creating interchange limits. All adaptations are documented in OEM technical bulletins.
The ZDJL's primary reliability risk is high-pressure fuel pump (HPFP) wear on early builds, with elevated incidence in vehicles using low-quality fuel or extended service intervals. PSA internal data from 2014 indicated a notable share of pre-2014 engines requiring HPFP replacement before 100,000 km, while UK DVSA records show no significant emissions-related MOT failures linked to this engine. Fuel quality and oil change discipline make HPFP longevity critical.
Analysis derived from PSA technical bulletins (2013–2016) 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 ZDJL offers strong performance and refinement, but early models (2010–2013) had HPFP reliability concerns. Later revisions (post-2014) improved pump durability, so well-maintained examples can be robust. Regular servicing and using high-quality fuel (RON 95+) and correct oil (PSA B71 2312) greatly aid longevity.
The biggest issues are high-pressure fuel pump wear, turbo wastegate rattle, minor carbon buildup on intake valves, and cam cover oil leaks. These are well-documented in PSA service bulletins, particularly SIB 13BZ05 for HPFP concerns.
This 1.6L turbo petrol was used in the Peugeot 308 II (2013–2016), 3008 II (2010–2016), and 508 RXH Hybrid4 (2012–2015) as the petrol component. It was not licensed to other manufacturers and is exclusive to PSA Group vehicles.
Yes. The ZDJL responds well to ECU remapping, with stage 1 tunes typically yielding +20–30 kW safely. The stock internals handle increased torque, but HPFP and turbo durability should be monitored. Supporting upgrades (intercooler, exhaust) enhance reliability under tuning.
In a 308 II 1.6 THP 165, typical consumption is ~8.2 L/100km (city) and ~5.1 L/100km (highway), or about 42 mpg UK combined. Real-world figures vary with driving style, but expect 38–45 mpg (UK) on mixed roads for a healthy ZDJL engine.
Yes. Like most modern PSA engines, the ZDJL is an interference design. If the timing chain fails (rare but possible), piston-to-valve contact can cause catastrophic damage. Chain maintenance is less critical than on BMW N47, but oil quality remains important.
PSA specifies a 5W‑30 synthetic oil meeting PSA B71 2312 standard. Always use a quality oil designed for turbocharged direct-injection petrol engines and change it every 15,000 km or annually to protect the HPFP and turbo.
Comprehensive technical documentation and regulatory references
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