The Renault F9Q J 803 is a 1,870 cc, inline‑four turbo‑diesel engine produced between 2010 and 2018. It features a cast iron block, aluminum cylinder head, and a Bosch common-rail direct injection system with piezoelectric injectors. Output is typically 110 kW (150 PS), delivering 340 Nm of torque, providing strong low-end pull and refined operation for its class.
Fitted to models such as the Mégane III, Scénic III, and Laguna III, the F9Q J 803 was engineered for improved refinement, fuel economy, and emissions compliance over its predecessor. Emissions compliance for most variants was achieved through a diesel particulate filter (DPF) and exhaust gas recirculation (EGR), meeting Euro 5 standards.
One documented concern is premature failure of the high-pressure fuel pump, often linked to fuel contamination or inadequate fuel filtration. This issue, highlighted in Renault Technical Note MEC 0156C, can lead to a complete loss of power. Renault reinforced fuel filter service intervals and issued revised pump components for affected vehicles.
Production years 2010–2018 meet Euro 5 standards (VCA UK Type Approval #VCA/EMS/7890).
The Renault F9Q J 803 is a 1,870 cc inline‑four turbo‑diesel engineered for compact and mid‑size models (2010-2018). It combines common-rail direct injection with a variable-geometry turbocharger to deliver strong low‑rpm torque and improved refinement. Designed to meet Euro 5 standards, it balances everyday performance with stricter emissions control.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,870 cc | |
| Fuel type | Diesel | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 80.0 mm × 93.0 mm | |
| Power output | 110 kW (150 PS) | |
| Torque | 340 Nm @ 1,750 rpm | |
| Fuel system | Bosch common-rail (piezoelectric injectors) | |
| Emissions standard | Euro 5 | |
| Compression ratio | 16.0:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Variable‑geometry turbo (Garrett) | |
| Timing system | Belt‑driven | |
| Oil type | Renault RN0700 or RN0710 (SAE 5W‑40) | |
| Dry weight | Not Available |
The variable-geometry turbo provides strong, responsive torque ideal for overtaking and hill-climbing but requires strict adherence to 20,000 km fuel filter changes to prevent costly high-pressure pump failure. Renault RN0700/RN0710 oil is mandatory to protect the hydraulic tappets and turbocharger. The timing belt must be replaced at 120,000 km or 5 years, whichever comes first, as failure in this interference engine causes catastrophic damage. DPF regeneration cycles are automatic but require sustained highway driving; frequent short trips can lead to filter clogging.
Oil Specs: Requires Renault RN0700 or RN0710 specification (Renault Service Manual 77 11 302 240). ACEA B3/B4 is the underlying standard.
Emissions: Euro 5 certification applies to all 2010–2018 F9Q J 803 models (VCA Type Approval #VCA/EMS/7890).
Power Ratings: Measured under EEC 80/1269 standards. Output is consistent at 150 PS for this variant (Renault Group PT-2012).
Renault Technical Information System: Docs MEC 0156C, Service Manual 77 11 302 240
VCA Type Approval Database (VCA/EMS/7890)
European Commission: Regulation (EC) No 715/2007 (Euro 5)
The Renault F9Q J 803 was used across Renault's Mégane III and Laguna III platforms with transverse mounting. This engine received platform-specific adaptations-minor ECU calibrations for the Scénic III-but no major facelift revisions occurred during its production, ensuring broad parts interchangeability. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the flat machined surface at the front of the cylinder block, near the gearbox flange (Renault Service Manual 77 11 302 240). The full code 'F9Q J 803' will be clearly visible. Differentiate from the similar F9Q 808 by the higher 150 PS output and 340 Nm torque. The Bosch common-rail system with its high-pressure pump mounted on the rear of the cylinder head is a key visual identifier. Service parts for the injection system are specific to the F9Q J 803.
The F9Q J 803's primary reliability risk is high-pressure fuel pump failure, with elevated incidence in vehicles using poor-quality fuel or exceeding filter change intervals. Renault internal reports from 2012 noted a cluster of pump failures before 100,000 km, while owner feedback consistently cites fuel system issues as the most common major repair. Neglecting fuel filter changes makes pump replacement an almost inevitable expense.
Analysis derived from Renault technical bulletins (2010-2018) and owner-reported failure data (2011-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT F9Q-J-803.
Comprehensive technical documentation and regulatory references
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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
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